firefly-linux-kernel-4.4.55.git
16 years ago[XFS] remove restricted chown parameter from xfs linux
Tim Shimmin [Thu, 30 Oct 2008 07:30:09 +0000 (18:30 +1100)]
[XFS] remove restricted chown parameter from xfs linux

On Linux all filesystems are supposed to be operating under Posix'
restricted chown. Restricted chown means it restricts chown to the owner
unless you have CAP_FOWNER.

NOTE: that 2 files outside of fs/xfs have been modified too for this
change.

Reviewed-by: Dave Chinner <david@fromorbit.com>
SGI-PV: 988919

SGI-Modid: 2.6.x-xfs-melb:linux:32413b

Signed-off-by: Tim Shimmin <tes@sgi.com>
Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: David Chinner <david@fromorbit.com>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
16 years ago[XFS] kill sys_cred
Christoph Hellwig [Thu, 30 Oct 2008 07:27:48 +0000 (18:27 +1100)]
[XFS] kill sys_cred

capable_cred has been unused for a while so we can kill it and sys_cred.
That also means the cred argument to xfs_setattr and xfs_change_file_space
can be removed now.

SGI-PV: 988918

SGI-Modid: xfs-linux-melb:xfs-kern:32412a

Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Tim Shimmin <tes@sgi.com>
Signed-off-by: David Chinner <david@fromorbit.com>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
16 years ago[XFS] correctly select first log item to push
David Chinner [Thu, 30 Oct 2008 07:26:51 +0000 (18:26 +1100)]
[XFS] correctly select first log item to push

Under heavy metadata load we are seeing log hangs. The AIL has items in it
ready to be pushed, and they are within the push target window. However,
we are not pushing them when the last pushed LSN is less than the LSN of
the first log item on the AIL. This is a regression introduced by the AIL
push cursor modifications.

SGI-PV: 987246

SGI-Modid: xfs-linux-melb:xfs-kern:32409a

Signed-off-by: David Chinner <david@fromorbit.com>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Signed-off-by: Tim Shimmin <tes@sgi.com>
16 years ago[XFS] free partially initialized inodes using destroy_inode
Christoph Hellwig [Thu, 30 Oct 2008 07:26:04 +0000 (18:26 +1100)]
[XFS] free partially initialized inodes using destroy_inode

To make sure we free the security data inodes need to be freed using the
proper VFS helper (which we also need to export for this). We mark these
inodes bad so we can skip the flush path for them.

SGI-PV: 987246

SGI-Modid: xfs-linux-melb:xfs-kern:32398a

Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Signed-off-by: David Chinner <david@fromorbit.com>
16 years agoInode: export symbol destroy_inode
Christoph Hellwig [Thu, 30 Oct 2008 07:24:37 +0000 (18:24 +1100)]
Inode: export symbol destroy_inode

To make sure we free the security data inodes need to be freed using
the proper VFS helper (which we also need to export for this). We mark
these inodes bad so we can skip the flush path for them.

Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Signed-off-by: David Chinner <david@fromorbit.com>
16 years ago[XFS] stop using xfs_itobp in xfs_bulkstat
Christoph Hellwig [Thu, 30 Oct 2008 07:04:13 +0000 (18:04 +1100)]
[XFS] stop using xfs_itobp in xfs_bulkstat

xfs_bulkstat only wants the dinode, offset and buffer from a given inode
number. Instead of using xfs_itobp on a fake inode which is complicated
and currently leads to leaks of the security data just use xfs_inotobp
which is designed to do exactly the kind of lookup xfs_bulkstat wants. The
only thing that's missing in xfs_inotobp is a flags paramter that let's us
pass down XFS_IMAP_BULKSTAT, but that can easily added.

SGI-PV: 987246

SGI-Modid: xfs-linux-melb:xfs-kern:32397a

Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Signed-off-by: David Chinner <david@fromorbit.com>
16 years ago[XFS] avoid all reclaimable inodes in xfs_sync_inodes_ag
David Chinner [Thu, 30 Oct 2008 07:03:14 +0000 (18:03 +1100)]
[XFS] avoid all reclaimable inodes in xfs_sync_inodes_ag

If we are syncing data in xfs_sync_inodes_ag(), the VFS inode must still
be referencable as the dirty data state is carried on the VFS inode. hence
if we can't get a reference via igrab(), the inode must be in reclaim
which implies that it has no dirty data attached.

Leave such inodes to the reclaim code to flush the dirty inode state to
disk and so avoid attempting to access the VFS inode when it may not exist
in xfs_sync_inodes_ag().

Version 4:
o don't reference linux inode until after igrab() succeeds

Version 3:
o converted unlock/rele to an xfs_iput() call.

Version 2:
o change igrab logic to be more linear
o remove initial reclaimable inode check now that we are using
  igrab() failure to find reclaimable inodes
o assert that igrab failure occurs only on reclaimable inodes
o clean up inode locking - only grab the iolock if we are doing
  a SYNC_DELWRI call and we have a dirty inode.

SGI-PV: 987246

SGI-Modid: xfs-linux-melb:xfs-kern:32391a

Signed-off-by: David Chinner <david@fromorbit.com>
Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Peter Leckie <pleckie@sgi.com>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
16 years ago[XFS] Can't lock inodes in radix tree preload region
David Chinner [Thu, 30 Oct 2008 06:55:27 +0000 (17:55 +1100)]
[XFS] Can't lock inodes in radix tree preload region

When we are inside a radix tree preload region, we cannot sleep. Recently
we moved the inode locking inside the preload region for the inode radix
tree. Fix that, and fix a missed unlock in another error path in the same
code at the same time.

SGI-PV: 987246

SGI-Modid: xfs-linux-melb:xfs-kern:32385a

Signed-off-by: David Chinner <david@fromorbit.com>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Signed-off-by: Christoph Hellwig <hch@infradead.org>
16 years ago[XFS] Trivial xfs_remove comment fixup
Christoph Hellwig [Thu, 30 Oct 2008 06:55:18 +0000 (17:55 +1100)]
[XFS] Trivial xfs_remove comment fixup

The dp to ip comment should be for the unconditional xfs_droplink call,
and the "." link obviously only exists for directories, so it should be in
the is_dir conditional.

SGI-PV: 987246

SGI-Modid: xfs-linux-melb:xfs-kern:32374a

Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Donald Douwsma <donaldd@sgi.com>
Signed-off-by: David Chinner <david@fromorbit.com>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
16 years ago[XFS] fix biosize option
Christoph Hellwig [Thu, 30 Oct 2008 06:55:08 +0000 (17:55 +1100)]
[XFS] fix biosize option

iosizelog shouldn't be the same as iosize but the logarithm of it. Then
again the current biosize option doesn't make much sense to me as it
doesn't set the preferred I/O size as mentioned in the comment next to it
but rather the allocation size and thus is identical to the allocsize
option (except for the missing logarithm). It's also not documented in
Documentation/filesystems/xfs.txt or the mount manpage.

SGI-PV: 987246

SGI-Modid: xfs-linux-melb:xfs-kern:32373a

Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Donald Douwsma <donaldd@sgi.com>
Signed-off-by: David Chinner <david@fromorbit.com>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
16 years ago[XFS] fix the noquota mount option
Christoph Hellwig [Thu, 30 Oct 2008 06:54:57 +0000 (17:54 +1100)]
[XFS] fix the noquota mount option

Noquota should clear all mount options, and not just user and group quota.
Probably doesn't matter very much in real life.

SGI-PV: 987246

SGI-Modid: xfs-linux-melb:xfs-kern:32372a

Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Donald Douwsma <donaldd@sgi.com>
Signed-off-by: David Chinner <david@fromorbit.com>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
16 years ago[XFS] kill struct xfs_mount_args
Christoph Hellwig [Thu, 30 Oct 2008 06:53:24 +0000 (17:53 +1100)]
[XFS] kill struct xfs_mount_args

No need to parse the mount option into a structure before applying it to
struct xfs_mount.

The content of xfs_start_flags gets merged into xfs_parseargs. Calls
inbetween don't care and can use mount members instead of the args struct.

This patch uncovered that the mount option for shared filesystems wasn't
ever exposed on Linux. The code to handle it is #if 0'ed in this patch
pending a decision on this feature. I'll send a writeup about it to the
list soon.

SGI-PV: 987246

SGI-Modid: xfs-linux-melb:xfs-kern:32371a

Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Donald Douwsma <donaldd@sgi.com>
Signed-off-by: David Chinner <david@fromorbit.com>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
16 years ago[XFS] XFS: Check for valid transaction headers in recovery
David Chinner [Thu, 30 Oct 2008 06:40:09 +0000 (17:40 +1100)]
[XFS] XFS: Check for valid transaction headers in recovery

When we are about to add a new item to a transaction in recovery, we need
to check that it is valid first. Currently we just assert that header
magic number matches, but in production systems that is not present and we
add a corrupted transaction to the list to be processed. This results in a
kernel oops later when processing the corrupted transaction.

Instead, if we detect a corrupted transaction, abort recovery and leave
the user to clean up the mess that has occurred.

SGI-PV: 988145

SGI-Modid: xfs-linux-melb:xfs-kern:32356a

Signed-off-by: David Chinner <david@fromorbit.com>
Signed-off-by: Tim Shimmin <tes@sgi.com>
Signed-off-by: Eric Sandeen <sandeen@sandeen.net>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
16 years ago[XFS] Finish removing the mount pointer from the AIL API
David Chinner [Thu, 30 Oct 2008 06:39:58 +0000 (17:39 +1100)]
[XFS] Finish removing the mount pointer from the AIL API

Change all the remaining AIL API functions that are passed struct
xfs_mount pointers to pass pointers directly to the struct xfs_ail being
used. With this conversion, all external access to the AIL is via the
struct xfs_ail. Hence the operation and referencing of the AIL is almost
entirely independent of the xfs_mount that is using it - it is now much
more tightly tied to the log and the items it is tracking in the log than
it is tied to the xfs_mount.

SGI-PV: 988143

SGI-Modid: xfs-linux-melb:xfs-kern:32353a

Signed-off-by: David Chinner <david@fromorbit.com>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Signed-off-by: Christoph Hellwig <hch@infradead.org>
16 years ago[XFS] Add ail pointer into log items
David Chinner [Thu, 30 Oct 2008 06:39:46 +0000 (17:39 +1100)]
[XFS] Add ail pointer into log items

Add an xfs_ail pointer to log items so that the log items can reference
the AIL directly during callbacks without needed a struct xfs_mount.

SGI-PV: 988143

SGI-Modid: xfs-linux-melb:xfs-kern:32352a

Signed-off-by: David Chinner <david@fromorbit.com>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Signed-off-by: Christoph Hellwig <hch@infradead.org>
16 years ago[XFS] Given the log a pointer to the AIL
David Chinner [Thu, 30 Oct 2008 06:39:35 +0000 (17:39 +1100)]
[XFS] Given the log a pointer to the AIL

When we need to go from the log to the AIL, we have to go via the
xfs_mount. Add a xfs_ail pointer to the log so we can go directly to the
AIL associated with the log.

SGI-PV: 988143

SGI-Modid: xfs-linux-melb:xfs-kern:32351a

Signed-off-by: David Chinner <david@fromorbit.com>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Signed-off-by: Christoph Hellwig <hch@infradead.org>
16 years ago[XFS] Move the AIL lock into the struct xfs_ail
David Chinner [Thu, 30 Oct 2008 06:39:23 +0000 (17:39 +1100)]
[XFS] Move the AIL lock into the struct xfs_ail

Bring the ail lock inside the struct xfs_ail. This means the AIL can be
entirely manipulated via the struct xfs_ail rather than needing both the
struct xfs_mount and the struct xfs_ail.

SGI-PV: 988143

SGI-Modid: xfs-linux-melb:xfs-kern:32350a

Signed-off-by: David Chinner <david@fromorbit.com>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Signed-off-by: Christoph Hellwig <hch@infradead.org>
16 years ago[XFS] Allow 64 bit machines to avoid the AIL lock during flushes
David Chinner [Thu, 30 Oct 2008 06:39:12 +0000 (17:39 +1100)]
[XFS] Allow 64 bit machines to avoid the AIL lock during flushes

When copying lsn's from the log item to the inode or dquot flush lsn, we
currently grab the AIL lock. We do this because the LSN is a 64 bit
quantity and it needs to be read atomically. The lock is used to guarantee
atomicity for 32 bit platforms.

Make the LSN copying a small function, and make the function used
conditional on BITS_PER_LONG so that 64 bit machines don't need to take
the AIL lock in these places.

SGI-PV: 988143

SGI-Modid: xfs-linux-melb:xfs-kern:32349a

Signed-off-by: David Chinner <david@fromorbit.com>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Signed-off-by: Christoph Hellwig <hch@infradead.org>
16 years ago[XFS] move the AIl traversal over to a consistent interface
David Chinner [Thu, 30 Oct 2008 06:39:00 +0000 (17:39 +1100)]
[XFS] move the AIl traversal over to a consistent interface

With the new cursor interface, it makes sense to make all the traversing
code use the cursor interface and make the old one go away. This means
more of the AIL interfacing is done by passing struct xfs_ail pointers
around the place instead of struct xfs_mount pointers.

We can replace the use of xfs_trans_first_ail() in xfs_log_need_covered()
as it is only checking if the AIL is empty. We can do that with a call to
xfs_trans_ail_tail() instead, where a zero LSN returned indicates and
empty AIL...

SGI-PV: 988143

SGI-Modid: xfs-linux-melb:xfs-kern:32348a

Signed-off-by: David Chinner <david@fromorbit.com>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Signed-off-by: Christoph Hellwig <hch@infradead.org>
16 years ago[XFS] Use a cursor for AIL traversal.
David Chinner [Thu, 30 Oct 2008 06:38:39 +0000 (17:38 +1100)]
[XFS] Use a cursor for AIL traversal.

To replace the current generation number ensuring sanity of the AIL
traversal, replace it with an external cursor that is linked to the AIL.

Basically, we store the next item in the cursor whenever we want to drop
the AIL lock to do something to the current item. When we regain the lock.
the current item may already be free, so we can't reference it, but the
next item in the traversal is already held in the cursor.

When we move or delete an object, we search all the active cursors and if
there is an item match we clear the cursor(s) that point to the object.
This forces the traversal to restart transparently.

We don't invalidate the cursor on insert because the cursor still points
to a valid item. If the intem is inserted between the current item and the
cursor it does not matter; the traversal is considered to be past the
insertion point so it will be picked up in the next traversal.

Hence traversal restarts pretty much disappear altogether with this method
of traversal, which should substantially reduce the overhead of pushing on
a busy AIL.

Version 2 o add restart logic o comment cursor interface o minor cleanups

SGI-PV: 988143

SGI-Modid: xfs-linux-melb:xfs-kern:32347a

Signed-off-by: David Chinner <david@fromorbit.com>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Signed-off-by: Christoph Hellwig <hch@infradead.org>
16 years ago[XFS] Allocate the struct xfs_ail
David Chinner [Thu, 30 Oct 2008 06:38:26 +0000 (17:38 +1100)]
[XFS] Allocate the struct xfs_ail

Rather than embedding the struct xfs_ail in the struct xfs_mount, allocate
it during AIL initialisation. Add a back pointer to the struct xfs_ail so
that we can pass around the xfs_ail and still be able to access the
xfs_mount if need be. This is th first step involved in isolating the AIL
implementation from the surrounding filesystem code.

SGI-PV: 988143

SGI-Modid: xfs-linux-melb:xfs-kern:32346a

Signed-off-by: David Chinner <david@fromorbit.com>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Signed-off-by: Christoph Hellwig <hch@infradead.org>
16 years ago[XFS] Account for allocated blocks when expanding directories
David Chinner [Thu, 30 Oct 2008 06:38:12 +0000 (17:38 +1100)]
[XFS] Account for allocated blocks when expanding directories

When we create a directory, we reserve a number of blocks for the maximum
possible expansion of of the directory due to various btree splits,
freespace allocation, etc. Unfortunately, each allocation is not reflected
in the total number of blocks still available to the transaction, so the
maximal reservation is used over and over again.

This leads to problems where an allocation group has only enough blocks
for *some* of the allocations required for the directory modification.
After the first N allocations, the remaining blocks in the allocation
group drops below the total reservation, and subsequent allocations fail
because the allocator will not allow the allocation to proceed if the AG
does not have the enough blocks available for the entire allocation total.

This results in an ENOSPC occurring after an allocation has already
occurred. This results in aborting the directory operation (leaving the
directory in an inconsistent state) and cancelling a dirty transaction,
which results in a filesystem shutdown.

Avoid the problem by reflecting the number of blocks allocated in any
directory expansion in the total number of blocks available to the
modification in progress. This prevents a directory modification from
being aborted part way through with an ENOSPC.

SGI-PV: 988144

SGI-Modid: xfs-linux-melb:xfs-kern:32340a

Signed-off-by: David Chinner <david@fromorbit.com>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
16 years ago[XFS] Prevent looping in xfs_sync_inodes_ag
David Chinner [Thu, 30 Oct 2008 06:38:00 +0000 (17:38 +1100)]
[XFS] Prevent looping in xfs_sync_inodes_ag

If the last block of the AG has inodes in it and the AG is an exactly
power-of-2 size then the last inode in the AG points to the last block in
the AG. If we try to find the next inode in the AG by adding one to the
inode number, we increment the inode number past the size of the AG. The
result is that the macro XFS_INO_TO_AGINO() will strip the AG portion of
the inode number and return an inode number of zero.

That is, instead of terminating the lookup loop because we hit the inode
number went outside the valid range for the AG, the search index returns
to zero and we start traversing the radix tree from the start again. This
results in an endless loop in xfs_sync_inodes_ag().

Fix it be detecting if the new search index decreases as a result of
incrementing the current inode number. That indicate an overflow and hence
that we have finished processing the AG so we can terminate the loop.

SGI-PV: 988142

SGI-Modid: xfs-linux-melb:xfs-kern:32335a

Signed-off-by: David Chinner <david@fromorbit.com>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Signed-off-by: Christoph Hellwig <hch@infradead.org>
16 years ago[XFS] kill deleted inodes list
David Chinner [Thu, 30 Oct 2008 06:37:49 +0000 (17:37 +1100)]
[XFS] kill deleted inodes list

Now that the deleted inodes list is unused, kill it. This also removes the
i_reclaim list head from the xfs_inode, shrinking it by two pointers.

SGI-PV: 988142

SGI-Modid: xfs-linux-melb:xfs-kern:32334a

Signed-off-by: David Chinner <david@fromorbit.com>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Signed-off-by: Christoph Hellwig <hch@infradead.org>
16 years ago[XFS] use the inode radix tree for reclaiming inodes
David Chinner [Thu, 30 Oct 2008 06:37:37 +0000 (17:37 +1100)]
[XFS] use the inode radix tree for reclaiming inodes

Use the reclaim tag to walk the radix tree and find the inodes under
reclaim. This was the only user of the deleted inode list.

SGI-PV: 988142

SGI-Modid: xfs-linux-melb:xfs-kern:32333a

Signed-off-by: David Chinner <david@fromorbit.com>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Signed-off-by: Christoph Hellwig <hch@infradead.org>
16 years ago[XFS] mark inodes for reclaim via a tag in the inode radix tree
David Chinner [Thu, 30 Oct 2008 06:37:26 +0000 (17:37 +1100)]
[XFS] mark inodes for reclaim via a tag in the inode radix tree

Prepare for removing the deleted inode list by marking inodes for reclaim
in the inode radix trees so that we can use the radix trees to find
reclaimable inodes.

SGI-PV: 988142

SGI-Modid: xfs-linux-melb:xfs-kern:32331a

Signed-off-by: David Chinner <david@fromorbit.com>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Signed-off-by: Christoph Hellwig <hch@infradead.org>
16 years ago[XFS] rename inode reclaim functions
David Chinner [Thu, 30 Oct 2008 06:37:15 +0000 (17:37 +1100)]
[XFS] rename inode reclaim functions

The function names xfs_finish_reclaim and xfs_finish_reclaim_all are not
very descriptive of what they are reclaiming. Rename to
xfs_reclaim_inode[s] to match the xfs_sync_inodes() function.

SGI-PV: 988142

SGI-Modid: xfs-linux-melb:xfs-kern:32330a

Signed-off-by: David Chinner <david@fromorbit.com>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Signed-off-by: Christoph Hellwig <hch@infradead.org>
16 years ago[XFS] move inode reclaim functions to xfs_sync.c
David Chinner [Thu, 30 Oct 2008 06:37:03 +0000 (17:37 +1100)]
[XFS] move inode reclaim functions to xfs_sync.c

Background inode reclaim is run by the xfssyncd. Move the reclaim worker
functions to be close to the sync code as the are very similar in
structure and are both run from the same background thread.

SGI-PV: 988142

SGI-Modid: xfs-linux-melb:xfs-kern:32329a

Signed-off-by: David Chinner <david@fromorbit.com>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Signed-off-by: Christoph Hellwig <hch@infradead.org>
16 years ago[XFS] Fix build warning - xfs_fs_alloc_inode() needs a return statement
Lachlan McIlroy [Thu, 30 Oct 2008 06:36:52 +0000 (17:36 +1100)]
[XFS] Fix build warning - xfs_fs_alloc_inode() needs a return statement

SGI-PV: 988141

SGI-Modid: xfs-linux-melb:xfs-kern:32325a

Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
16 years ago[XFS] Prevent use-after-free caused by synchronous inode reclaim
David Chinner [Thu, 30 Oct 2008 06:36:40 +0000 (17:36 +1100)]
[XFS] Prevent use-after-free caused by synchronous inode reclaim

With the combined linux and XFS inode, we need to ensure that the combined
structure is not freed before the generic code is finished with the inode.
As it turns out, there is a case where the XFS inode is freed before the
linux inode - when xfs_reclaim() is called from ->clear_inode() on a clean
inode, the xfs inode is freed during that call. The generic code
references the inode after the ->clear_inode() call, so this is a use
after free situation.

Fix the problem by moving the xfs_reclaim() call to ->destroy_inode()
instead of in ->clear_inode(). This ensures the combined inode structure
is not freed until after the generic code has finished with it.

SGI-PV: 988141

SGI-Modid: xfs-linux-melb:xfs-kern:32324a

Signed-off-by: David Chinner <david@fromorbit.com>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Signed-off-by: Christoph Hellwig <hch@infradead.org>
16 years ago[XFS] Combine the XFS and Linux inodes
David Chinner [Thu, 30 Oct 2008 06:36:14 +0000 (17:36 +1100)]
[XFS] Combine the XFS and Linux inodes

To avoid issues with different lifecycles of XFS and Linux inodes, embedd
the linux inode inside the XFS inode. This means that the linux inode has
the same lifecycle as the XFS inode, even when it has been released by the
OS. XFS inodes don't live much longer than this (a short stint in reclaim
at most), so there isn't significant memory usage penalties here.

Version 3 o kill xfs_icount()

Version 2 o remove unused commented out code from xfs_iget(). o kill
useless cast in VFS_I()

SGI-PV: 988141

SGI-Modid: xfs-linux-melb:xfs-kern:32323a

Signed-off-by: David Chinner <david@fromorbit.com>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Signed-off-by: Christoph Hellwig <hch@infradead.org>
16 years agoInode: Allow external list initialisation
David Chinner [Thu, 30 Oct 2008 06:35:24 +0000 (17:35 +1100)]
Inode: Allow external list initialisation

To allow XFS to combine the XFS and linux inodes into a single
structure, we need to drive inode lookup from the XFS inode cache,
not the generic inode cache. This means that we need initialise a
struct inode from a context outside alloc_inode() as it is no longer
used by XFS.

After inode allocation and initialisation, we need to add the inode
to the superblock list, the in-use list, hash it and do some
accounting. This all needs to be done with the inode_lock held and
there are already several places in fs/inode.c that do this list
manipulation.  Factor out the common code, add a locking wrapper and
export the function so ti can be called from XFS.

Signed-off-by: Dave Chinner <david@fromorbit.com>
Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
16 years agoInode: Allow external initialisers
David Chinner [Thu, 30 Oct 2008 06:32:23 +0000 (17:32 +1100)]
Inode: Allow external initialisers

To allow XFS to combine the XFS and linux inodes into a single
structure, we need to drive inode lookup from the XFS inode cache,
not the generic inode cache. This means that we need initialise a
struct inode from a context outside alloc_inode() as it is no longer
used by XFS.

Factor and export the struct inode initialisation code from
alloc_inode() to inode_init_always() as a counterpart to
inode_init_once().  i.e. we have to call this init function for each
inode instantiation (always), as opposed inode_init_once() which is
only called on slab object instantiation (once).

Signed-off-by: Dave Chinner <david@fromorbit.com>
Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
16 years ago[XFS] Never call mark_inode_dirty_sync() directly
David Chinner [Thu, 30 Oct 2008 06:21:30 +0000 (17:21 +1100)]
[XFS] Never call mark_inode_dirty_sync() directly

Once the Linux inode and the XFS inode are combined, we cannot rely on
just check if the linux inode exists as a method of determining if it is
valid or not. Hence we should always call xfs_mark_inode_dirty_sync()
instead as it does the correct checks to determine if the liinux inode is
in a valid state or not.

SGI-PV: 988141

SGI-Modid: xfs-linux-melb:xfs-kern:32318a

Signed-off-by: David Chinner <david@fromorbit.com>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Signed-off-by: Christoph Hellwig <hch@infradead.org>
16 years ago[XFS] factor xfs_iget_core() into hit and miss cases
David Chinner [Thu, 30 Oct 2008 06:21:19 +0000 (17:21 +1100)]
[XFS] factor xfs_iget_core() into hit and miss cases

There are really two cases in xfs_iget_core(). The first is the cache hit
case, the second is the miss case. They share very little code, and hence
can easily be factored out into separate functions. This makes the code
much easier to understand and subsequently modify.

SGI-PV: 988141

SGI-Modid: xfs-linux-melb:xfs-kern:32317a

Signed-off-by: David Chinner <david@fromorbit.com>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Signed-off-by: Christoph Hellwig <hch@infradead.org>
16 years ago[XFS] fix instant oops with tracing enabled
Christoph Hellwig [Thu, 30 Oct 2008 06:21:10 +0000 (17:21 +1100)]
[XFS] fix instant oops with tracing enabled

We can only read inode->i_count if the inode is actually there and not a
NULL pointer. This was introduced in one of the recent sync patches.

SGI-PV: 988255

SGI-Modid: xfs-linux-melb:xfs-kern:32315a

Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
16 years ago[XFS] Move remaining quiesce code.
David Chinner [Thu, 30 Oct 2008 06:16:21 +0000 (17:16 +1100)]
[XFS] Move remaining quiesce code.

With all the other filesystem sync code it in xfs_sync.c including the
data quiesce code, it makes sense to move the remaining quiesce code to
the same place.

SGI-PV: 988140

SGI-Modid: xfs-linux-melb:xfs-kern:32312a

Signed-off-by: David Chinner <david@fromorbit.com>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Signed-off-by: Christoph Hellwig <hch@infradead.org>
16 years ago[XFS] Kill xfs_sync()
David Chinner [Thu, 30 Oct 2008 06:16:11 +0000 (17:16 +1100)]
[XFS] Kill xfs_sync()

There are no more callers to xfs_sync() now, so remove the function
altogther.

SGI-PV: 988140

SGI-Modid: xfs-linux-melb:xfs-kern:32311a

Signed-off-by: David Chinner <david@fromorbit.com>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Signed-off-by: Christoph Hellwig <hch@infradead.org>
16 years ago[XFS] Kill SYNC_CLOSE
David Chinner [Thu, 30 Oct 2008 06:16:00 +0000 (17:16 +1100)]
[XFS] Kill SYNC_CLOSE

SYNC_CLOSE is only ever used and checked in conjunction with SYNC_WAIT,
and this only done in one spot. The only thing this does is make
XFS_bflush() calls to the data buftargs.

This will happen very shortly afterwards the xfs_sync() call anyway in the
unmount path via the xfs_close_devices(), so this code is redundant and
can be removed. That only user of SYNC_CLOSE is now gone, so kill the flag
completely.

SGI-PV: 988140

SGI-Modid: xfs-linux-melb:xfs-kern:32310a

Signed-off-by: David Chinner <david@fromorbit.com>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Signed-off-by: Christoph Hellwig <hch@infradead.org>
16 years ago[XFS] make SYNC_DELWRI no longer use xfs_sync
David Chinner [Thu, 30 Oct 2008 06:15:50 +0000 (17:15 +1100)]
[XFS] make SYNC_DELWRI no longer use xfs_sync

Continue to de-multiplex xfs_sync be replacing all SYNC_DELWRI callers
with direct calls functions that do the work. Isolate the data quiesce
case to a function in xfs_sync.c. Isolate the FSDATA case with explicit
calls to xfs_sync_fsdata().

Version 2: o Push delwri related log forces into xfs_sync_inodes().

SGI-PV: 988140

SGI-Modid: xfs-linux-melb:xfs-kern:32309a

Signed-off-by: David Chinner <david@fromorbit.com>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Signed-off-by: Christoph Hellwig <hch@infradead.org>
16 years ago[XFS] make SYNC_ATTR no longer use xfs_sync
David Chinner [Thu, 30 Oct 2008 06:15:38 +0000 (17:15 +1100)]
[XFS] make SYNC_ATTR no longer use xfs_sync

Continue to de-multiplex xfs_sync be replacing all SYNC_ATTR callers with
direct calls xfs_sync_inodes(). Add an assert into xfs_sync() to ensure we
caught all the SYNC_ATTR callers.

SGI-PV: 988140

SGI-Modid: xfs-linux-melb:xfs-kern:32308a

Signed-off-by: David Chinner <david@fromorbit.com>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Signed-off-by: Christoph Hellwig <hch@infradead.org>
16 years ago[XFS] xfssyncd: don't call xfs_sync
David Chinner [Thu, 30 Oct 2008 06:15:29 +0000 (17:15 +1100)]
[XFS] xfssyncd: don't call xfs_sync

Start de-multiplexing xfs_sync() by making xfs_sync_worker() call the
specific sync functions it needs. This is only a small, unique subset of
the entire xfs_sync() code so is easier to follow.

SGI-PV: 988140

SGI-Modid: xfs-linux-melb:xfs-kern:32307a

Signed-off-by: David Chinner <david@fromorbit.com>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Signed-off-by: Christoph Hellwig <hch@infradead.org>
16 years ago[XFS] kill xfs_syncsub
David Chinner [Thu, 30 Oct 2008 06:15:21 +0000 (17:15 +1100)]
[XFS] kill xfs_syncsub

Now that the only caller is xfs_sync(), merge the two together as it makes
no sense to keep them separate.

SGI-PV: 988140

SGI-Modid: xfs-linux-melb:xfs-kern:32306a

Signed-off-by: David Chinner <david@fromorbit.com>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Signed-off-by: Christoph Hellwig <hch@infradead.org>
16 years ago[XFS] use xfs_sync_inodes rather than xfs_syncsub
David Chinner [Thu, 30 Oct 2008 06:15:12 +0000 (17:15 +1100)]
[XFS] use xfs_sync_inodes rather than xfs_syncsub

Kill the unused arg in xfs_syncsub() and xfs_sync_inodes(). For callers of
xfs_syncsub() that only want to flush inodes, replace xfs_syncsub() with
direct calls to xfs_sync_inodes() as that is all that is being done with
the specific flags being passed in.

SGI-PV: 988140

SGI-Modid: xfs-linux-melb:xfs-kern:32305a

Signed-off-by: David Chinner <david@fromorbit.com>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Signed-off-by: Christoph Hellwig <hch@infradead.org>
16 years ago[XFS] Use struct inodes instead of vnodes to kill vn_grab
David Chinner [Thu, 30 Oct 2008 06:15:03 +0000 (17:15 +1100)]
[XFS] Use struct inodes instead of vnodes to kill vn_grab

With the sync code relocated to the linux-2.6 directory we can use struct
inodes directly. If we do the same thing for the quota release code, we
can remove vn_grab altogether. While here, convert the VN_BAD() checks to
is_bad_inode() so we can remove vnodes entirely from this code.

SGI-PV: 988140

SGI-Modid: xfs-linux-melb:xfs-kern:32304a

Signed-off-by: David Chinner <david@fromorbit.com>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Signed-off-by: Christoph Hellwig <hch@infradead.org>
16 years ago[XFS] split out two helpers from xfs_syncsub
Christoph Hellwig [Thu, 30 Oct 2008 06:14:53 +0000 (17:14 +1100)]
[XFS] split out two helpers from xfs_syncsub

Split out two helpers from xfs_syncsub for the dummy log commit and the
superblock writeout.

SGI-PV: 988140

SGI-Modid: xfs-linux-melb:xfs-kern:32303a

Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: David Chinner <david@fromorbit.com>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
16 years ago[XFS] Move XFS_BMAP_SANITY_CHECK out of line.
Christoph Hellwig [Thu, 30 Oct 2008 06:14:43 +0000 (17:14 +1100)]
[XFS] Move XFS_BMAP_SANITY_CHECK out of line.

Move the XFS_BMAP_SANITY_CHECK macro out of line and make it a properly
typed function. Also pass the xfs_buf for the btree block instead of just
the btree block header, as we will need some additional information for it
to implement CRC checking of btree blocks.

SGI-PV: 988146

SGI-Modid: xfs-linux-melb:xfs-kern:32301a

Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Donald Douwsma <donaldd@sgi.com>
Signed-off-by: David Chinner <david@fromorbit.com>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
16 years ago[XFS] Always use struct xfs_btree_block instead of short / longform
Christoph Hellwig [Thu, 30 Oct 2008 06:14:34 +0000 (17:14 +1100)]
[XFS] Always use struct xfs_btree_block instead of short / longform
structures.

Always use the generic xfs_btree_block type instead of the short / long
structures. Add XFS_BTREE_SBLOCK_LEN / XFS_BTREE_LBLOCK_LEN defines for
the length of a short / long form block. The rationale for this is that we
will grow more btree block header variants to support CRCs and other RAS
information, and always accessing them through the same datatype with
unions for the short / long form pointers makes implementing this much
easier.

SGI-PV: 988146

SGI-Modid: xfs-linux-melb:xfs-kern:32300a

Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Donald Douwsma <donaldd@sgi.com>
Signed-off-by: David Chinner <david@fromorbit.com>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
16 years ago[XFS] cleanup btree record / key / ptr addressing macros.
Christoph Hellwig [Thu, 30 Oct 2008 06:11:40 +0000 (17:11 +1100)]
[XFS] cleanup btree record / key / ptr addressing macros.

Replace the generic record / key / ptr addressing macros that use cpp
token pasting with simpler macros that do the job for just one given btree
type. The new macros lose the cur argument and thus can be used outside
the core btree code, but also gain an xfs_mount * argument to allow for
checking the CRC flag in the near future. Note that many of these macros
aren't actually used in the kernel code, but only in userspace (mostly in
xfs_repair).

SGI-PV: 988146

SGI-Modid: xfs-linux-melb:xfs-kern:32295a

Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Donald Douwsma <donaldd@sgi.com>
Signed-off-by: David Chinner <david@fromorbit.com>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
16 years ago[XFS] remove the mount inode list
David Chinner [Thu, 30 Oct 2008 06:11:29 +0000 (17:11 +1100)]
[XFS] remove the mount inode list

Now we've removed all users of the mount inode list, we can kill it. This
reduces the size of the xfs_inode by 2 pointers.

SGI-PV: 988139

SGI-Modid: xfs-linux-melb:xfs-kern:32293a

Signed-off-by: David Chinner <david@fromorbit.com>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Signed-off-by: Christoph Hellwig <hch@infradead.org>
16 years ago[XFS] Cleanup maxrecs calculation.
Christoph Hellwig [Thu, 30 Oct 2008 06:11:19 +0000 (17:11 +1100)]
[XFS] Cleanup maxrecs calculation.

Clean up the way the maximum and minimum records for the btree blocks are
calculated. For the alloc and inobt btrees all the values are
pre-calculated in xfs_mount_common, and we switch the current loop around
the ugly generic macros that use cpp token pasting to generate type names
to two small helpers in normal C code. For the bmbt and bmdr trees these
helpers also exist, but can be called during runtime, too. Here we also
kill various macros dealing with them and inline the logic into the
get_minrecs / get_maxrecs / get_dmaxrecs methods in xfs_bmap_btree.c.

Note that all these new helpers take an xfs_mount * argument which will be
needed to determine the size of a btree block once we add support for
extended btree blocks with CRCs and other RAS information.

SGI-PV: 988146

SGI-Modid: xfs-linux-melb:xfs-kern:32292a

Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Donald Douwsma <donaldd@sgi.com>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
16 years ago[XFS] Traverse inode trees when releasing dquots
David Chinner [Thu, 30 Oct 2008 06:08:03 +0000 (17:08 +1100)]
[XFS] Traverse inode trees when releasing dquots

Make releasing all inode dquots traverse the per-ag inode radix trees
rather than the mount inode list. This removes another user of the mount
inode list.

Version 3 o fix comment relating to avoiding trying to release the

quota inodes and those in reclaim.

Version 2 o add comment explaining use of gang lookups for a single inode
o use IRELE, not VN_RELE o move check for ag initialisation to caller.

SGI-PV: 988139

SGI-Modid: xfs-linux-melb:xfs-kern:32291a

Signed-off-by: David Chinner <david@fromorbit.com>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Signed-off-by: Christoph Hellwig <hch@infradead.org>
16 years ago[XFS] Use the inode tree for finding dirty inodes
David Chinner [Thu, 30 Oct 2008 06:07:29 +0000 (17:07 +1100)]
[XFS] Use the inode tree for finding dirty inodes

Update xfs_sync_inodes to walk the inode radix tree cache to find dirty
inodes. This removes a huge bunch of nasty, messy code for traversing the
mount inode list safely and removes another user of the mount inode list.

Version 3 o rediff against new linux-2.6/xfs_sync.c code

Version 2 o add comment explaining use of gang lookups for a single inode
o use IRELE, not VN_RELE o move check for ag initialisation to caller.

SGI-PV: 988139

SGI-Modid: xfs-linux-melb:xfs-kern:32290a

Signed-off-by: David Chinner <david@fromorbit.com>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Signed-off-by: Christoph Hellwig <hch@infradead.org>
16 years ago[XFS] don't block in xfs_qm_dqflush() during async writeback.
David Chinner [Thu, 30 Oct 2008 06:07:20 +0000 (17:07 +1100)]
[XFS] don't block in xfs_qm_dqflush() during async writeback.

Normally dquots are written back via delayed write mechanisms. They are
flushed to their backing buffer by xfssyncd, which is then pushed out by
either AIL or xfsbufd flushing. The flush from the xfssyncd is supposed to
be non-blocking, but xfs_qm_dqflush() always waits for pinned duots, which
means that it will block for the length of time it takes to do a
synchronous log force. This causes unnecessary extra log I/O to be issued
whenever we try to flush a busy dquot.

Avoid the log forces and blocking xfssyncd by making xfs_qm_dqflush() pay
attention to what type of sync it is doing when it sees a pinned dquot and
not waiting when doing non-blocking flushes.

SGI-PV: 988147

SGI-Modid: xfs-linux-melb:xfs-kern:32287a

Signed-off-by: David Chinner <david@fromorbit.com>
Signed-off-by: Peter Leckie <pleckie@sgi.com>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
16 years ago[XFS] Remove xfs_iflush_all and clean up xfs_finish_reclaim_all()
David Chinner [Thu, 30 Oct 2008 06:06:28 +0000 (17:06 +1100)]
[XFS] Remove xfs_iflush_all and clean up xfs_finish_reclaim_all()

xfs_iflush_all() walks the m_inodes list to find inodes that need
reclaiming. We already have such a list - the m_del_inodes list. Replace
xfs_iflush_all() with a call to xfs_finish_reclaim_all() and clean up
xfs_finish_reclaim_all() to handle the different flush modes now needed.

Originally based on a patch from Christoph Hellwig.

Version 3 o rediff against new linux-2.6/xfs_sync.c code

Version 2 o revert xfs_syncsub() inode reclaim behaviour back to original

code o xfs_quiesce_fs() should use XFS_IFLUSH_DELWRI_ELSE_ASYNC, not

XFS_IFLUSH_ASYNC, to prevent change of behaviour.

SGI-PV: 988139

SGI-Modid: xfs-linux-melb:xfs-kern:32284a

Signed-off-by: David Chinner <david@fromorbit.com>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Signed-off-by: Christoph Hellwig <hch@infradead.org>
16 years ago[XFS] move xfssyncd code to xfs_sync.c
David Chinner [Thu, 30 Oct 2008 06:06:18 +0000 (17:06 +1100)]
[XFS] move xfssyncd code to xfs_sync.c

Move all the xfssyncd code to the new xfs_sync.c file. This places it
closer to the actual code that it interacts with, rather than just being
associated with high level VFS code.

SGI-PV: 988139

SGI-Modid: xfs-linux-melb:xfs-kern:32283a

Signed-off-by: David Chinner <david@fromorbit.com>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Signed-off-by: Christoph Hellwig <hch@infradead.org>
16 years ago[XFS] move sync code to its own file
David Chinner [Thu, 30 Oct 2008 06:06:08 +0000 (17:06 +1100)]
[XFS] move sync code to its own file

The sync code in XFS is spread around several files. While it used to make
sense to have such a distribution, the code is about to be cleaned up and
so centralising it in one spot as the first step makes sense.

SGI-PV: 988139

SGI-Modid: xfs-linux-melb:xfs-kern:32282a

Signed-off-by: David Chinner <david@fromorbit.com>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Signed-off-by: Christoph Hellwig <hch@infradead.org>
16 years ago[XFS] Show buffer address with debug hexdump on corruption
Barry Naujok [Thu, 30 Oct 2008 06:05:58 +0000 (17:05 +1100)]
[XFS] Show buffer address with debug hexdump on corruption

SGI-PV: 987246

SGI-Modid: xfs-linux-melb:xfs-kern:32233a

Signed-off-by: Barry Naujok <bnaujok@sgi.com>
Signed-off-by: Eric Sandeen <sandeen@sandeen.net>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
16 years ago[XFS] Check agf_btreeblks is valid when reading in the AGF
Barry Naujok [Thu, 30 Oct 2008 06:05:49 +0000 (17:05 +1100)]
[XFS] Check agf_btreeblks is valid when reading in the AGF

SGI-PV: 987683

SGI-Modid: xfs-linux-melb:xfs-kern:32232a

Signed-off-by: Barry Naujok <bnaujok@sgi.com>
Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
16 years ago[XFS] Sync up kernel and user-space headers
Barry Naujok [Thu, 30 Oct 2008 06:05:38 +0000 (17:05 +1100)]
[XFS] Sync up kernel and user-space headers

SGI-PV: 986558

SGI-Modid: xfs-linux-melb:xfs-kern:32231a

Signed-off-by: Barry Naujok <bnaujok@sgi.com>
Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
16 years ago[XFS] Make xfs_btree_check_ptr() debug-only code.
Lachlan McIlroy [Thu, 30 Oct 2008 06:05:26 +0000 (17:05 +1100)]
[XFS] Make xfs_btree_check_ptr() debug-only code.

SGI-PV: 985583

SGI-Modid: xfs-linux-melb:xfs-kern:32224a

Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Signed-off-by: Christoph Hellwig <hch@infradead.org>
16 years ago[XFS] Fix build brakage from patch "Clean up dquot pincount code"
Peter Leckie [Thu, 30 Oct 2008 06:05:18 +0000 (17:05 +1100)]
[XFS] Fix build brakage from patch "Clean up dquot pincount code"

This is a fix for patch " Clean up dquot pincount code" which introduced a
build breakage due to a missing & in xfs_qm_dquot_logitem_pin.

SGI-PV: 986789

SGI-Modid: xfs-linux-melb:xfs-kern:32221a

Signed-off-by: Peter Leckie <pleckie@sgi.com>
Signed-off-by: Donald Douwsma <donaldd@sgi.com>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
16 years ago[XFS] Clean up dquot pincount code.
Peter Leckie [Thu, 30 Oct 2008 06:05:04 +0000 (17:05 +1100)]
[XFS] Clean up dquot pincount code.

This is a code cleanup and optimization that removes a per mount point
spinlock from the quota code and cleans up the code.

The patch changes the pincount from being an int protected by a spinlock
to an atomic_t allowing the pincount to be manipulated without holding the
spinlock.

This cleanup also protects against random wakup's of both the aild and
xfssyncd by reevaluating the pincount after been woken. Two latter patches
will address the Spurious wakeups.

SGI-PV: 986789

SGI-Modid: xfs-linux-melb:xfs-kern:32215a

Signed-off-by: Peter Leckie <pleckie@sgi.com>
Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: David Chinner <david@fromorbit.com>
Signed-off-by: Donald Douwsma <donaldd@sgi.com>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
16 years ago[XFS] Wait for all I/O on truncate to zero file size
Lachlan McIlroy [Thu, 30 Oct 2008 05:59:06 +0000 (16:59 +1100)]
[XFS] Wait for all I/O on truncate to zero file size

It's possible to have outstanding xfs_ioend_t's queued when the file size
is zero. This can happen in the direct I/O path when a direct I/O write
fails due to ENOSPC. In this case the xfs_ioend_t will still be queued (ie
xfs_end_io_direct() does not know that the I/O failed so can't force the
xfs_ioend_t to be flushed synchronously).

When we truncate a file on unlink we don't know to wait for these
xfs_ioend_ts and we can have a use-after-free situation if the inode is
reclaimed before the xfs_ioend_t is finally processed.

As was suggested by Dave Chinner lets wait for all I/Os to complete when
truncating the file size to zero.

SGI-PV: 981668

SGI-Modid: xfs-linux-melb:xfs-kern:32216a

Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Signed-off-by: Christoph Hellwig <hch@infradead.org>
16 years ago[XFS] make btree tracing generic
Christoph Hellwig [Thu, 30 Oct 2008 05:58:50 +0000 (16:58 +1100)]
[XFS] make btree tracing generic

Make the existing bmap btree tracing generic so that it applies to all
btree types.

Some fragments lifted from a patch by Dave Chinner.

This adds two files that were missed from the previous btree tracing
checkin.

SGI-PV: 985583

SGI-Modid: xfs-linux-melb:xfs-kern:32210a

Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Signed-off-by: Bill O'Donnell <billodo@sgi.com>
Signed-off-by: David Chinner <david@fromorbit.com>
16 years ago[XFS] mark various functions in xfs_btree.c static
Christoph Hellwig [Thu, 30 Oct 2008 05:58:41 +0000 (16:58 +1100)]
[XFS] mark various functions in xfs_btree.c static

Lots of functionality in xfs_btree.c isn't needed by callers outside of
this file anymore, so mark these functions static.

SGI-PV: 985583

SGI-Modid: xfs-linux-melb:xfs-kern:32209a

Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Signed-off-by: Bill O'Donnell <billodo@sgi.com>
Signed-off-by: David Chinner <david@fromorbit.com>
16 years ago[XFS] add keys_inorder and recs_inorder btree methods
Christoph Hellwig [Thu, 30 Oct 2008 05:58:32 +0000 (16:58 +1100)]
[XFS] add keys_inorder and recs_inorder btree methods

Add methods to check whether two keys/records are in the righ order. This
replaces the xfs_btree_check_key and xfs_btree_check_rec methods. For the
callers from xfs_bmap.c just opencode the bmbt-specific asserts.

SGI-PV: 985583

SGI-Modid: xfs-linux-melb:xfs-kern:32208a

Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Signed-off-by: Bill O'Donnell <billodo@sgi.com>
Signed-off-by: David Chinner <david@fromorbit.com>
16 years ago[XFS] kill xfs_bmbt_log_block and xfs_bmbt_log_recs
Christoph Hellwig [Thu, 30 Oct 2008 05:58:21 +0000 (16:58 +1100)]
[XFS] kill xfs_bmbt_log_block and xfs_bmbt_log_recs

These are equivalent to the xfs_btree_* versions, and the only remaining
caller can be switched to the generic one after they are exported. Also
remove some now dead infrastructure in xfs_bmap_btree.c.

SGI-PV: 985583

SGI-Modid: xfs-linux-melb:xfs-kern:32207a

Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Signed-off-by: Bill O'Donnell <billodo@sgi.com>
Signed-off-by: David Chinner <david@fromorbit.com>
16 years ago[XFS] implement generic xfs_btree_get_rec
Christoph Hellwig [Thu, 30 Oct 2008 05:58:11 +0000 (16:58 +1100)]
[XFS] implement generic xfs_btree_get_rec

Not really much reason to make it generic given that it's so small, but
this is the last non-method in xfs_alloc_btree.c and xfs_ialloc_btree.c,
so it makes the whole btree implementation more structured.

SGI-PV: 985583

SGI-Modid: xfs-linux-melb:xfs-kern:32206a

Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Signed-off-by: Bill O'Donnell <billodo@sgi.com>
Signed-off-by: David Chinner <david@fromorbit.com>
16 years ago[XFS] implement generic xfs_btree_delete/delrec
Christoph Hellwig [Thu, 30 Oct 2008 05:58:01 +0000 (16:58 +1100)]
[XFS] implement generic xfs_btree_delete/delrec

Make the btree delete code generic. Based on a patch from David Chinner
with lots of changes to follow the original btree implementations more
closely. While this loses some of the generic helper routines for
inserting/moving/removing records it also solves some of the one off bugs
in the original code and makes it easier to verify.

SGI-PV: 985583

SGI-Modid: xfs-linux-melb:xfs-kern:32205a

Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Signed-off-by: Bill O'Donnell <billodo@sgi.com>
Signed-off-by: David Chinner <david@fromorbit.com>
16 years ago[XFS] move xfs_bmbt_killroot to common code
Christoph Hellwig [Thu, 30 Oct 2008 05:57:51 +0000 (16:57 +1100)]
[XFS] move xfs_bmbt_killroot to common code

xfs_bmbt_killroot is a mostly generic implementation of moving from a real
block based root to an inode based root. So move it to xfs_btree.c where
it can use all the nice infrastructure there and make it pointer size
agnostic

The new name for it is xfs_btree_kill_iroot, following the old naming but
making it clear we're dealing with the root in inode case here, and to
avoid confusion with xfs_btree_new_root which is used for the not inode
rooted case. I've also added a comment describing what it does and why
it's named the way it is.

SGI-PV: 985583

SGI-Modid: xfs-linux-melb:xfs-kern:32203a

Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Signed-off-by: Bill O'Donnell <billodo@sgi.com>
Signed-off-by: David Chinner <david@fromorbit.com>
16 years ago[XFS] implement generic xfs_btree_insert/insrec
Christoph Hellwig [Thu, 30 Oct 2008 05:57:40 +0000 (16:57 +1100)]
[XFS] implement generic xfs_btree_insert/insrec

Make the btree insert code generic. Based on a patch from David Chinner
with lots of changes to follow the original btree implementations more
closely. While this loses some of the generic helper routines for
inserting/moving/removing records it also solves some of the one off bugs
in the original code and makes it easier to verify.

SGI-PV: 985583

SGI-Modid: xfs-linux-melb:xfs-kern:32202a

Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Signed-off-by: Bill O'Donnell <billodo@sgi.com>
Signed-off-by: David Chinner <david@fromorbit.com>
16 years ago[XFS] move xfs_bmbt_newroot to common code
Christoph Hellwig [Thu, 30 Oct 2008 05:57:28 +0000 (16:57 +1100)]
[XFS] move xfs_bmbt_newroot to common code

xfs_bmbt_newroot is a mostly generic implementation of moving from an
inode root to a real block based root. So move it to xfs_btree.c where it
can use all the nice infrastructure there and make it pointer size
agnostic

The new name for it is xfs_btree_new_iroot, following the old naming but
making it clear we're dealing with the root in inode case here, and to
avoid confusion with xfs_btree_new_root which is used for the not inode
rooted case.

SGI-PV: 985583

SGI-Modid: xfs-linux-melb:xfs-kern:32201a

Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Signed-off-by: Bill O'Donnell <billodo@sgi.com>
Signed-off-by: David Chinner <david@fromorbit.com>
16 years ago[XFS] implement semi-generic xfs_btree_new_root
Christoph Hellwig [Thu, 30 Oct 2008 05:57:16 +0000 (16:57 +1100)]
[XFS] implement semi-generic xfs_btree_new_root

From: Dave Chinner <dgc@sgi.com>

Add a xfs_btree_new_root helper for the alloc and ialloc btrees. The bmap
btree needs it's own version and is not converted.

[hch: split out from bigger patch and minor adaptions]

SGI-PV: 985583

SGI-Modid: xfs-linux-melb:xfs-kern:32200a

Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Signed-off-by: Bill O'Donnell <billodo@sgi.com>
Signed-off-by: David Chinner <david@fromorbit.com>
16 years ago[XFS] implement generic xfs_btree_split
Christoph Hellwig [Thu, 30 Oct 2008 05:57:03 +0000 (16:57 +1100)]
[XFS] implement generic xfs_btree_split

Make the btree split code generic. Based on a patch from David Chinner
with lots of changes to follow the original btree implementations more
closely. While this loses some of the generic helper routines for
inserting/moving/removing records it also solves some of the one off bugs
in the original code and makes it easier to verify.

SGI-PV: 985583

SGI-Modid: xfs-linux-melb:xfs-kern:32198a

Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Signed-off-by: Bill O'Donnell <billodo@sgi.com>
Signed-off-by: David Chinner <david@fromorbit.com>
16 years ago[XFS] implement generic xfs_btree_lshift
Christoph Hellwig [Thu, 30 Oct 2008 05:56:53 +0000 (16:56 +1100)]
[XFS] implement generic xfs_btree_lshift

Make the btree left shift code generic. Based on a patch from David
Chinner with lots of changes to follow the original btree implementations
more closely. While this loses some of the generic helper routines for
inserting/moving/removing records it also solves some of the one off bugs
in the original code and makes it easier to verify.

SGI-PV: 985583

SGI-Modid: xfs-linux-melb:xfs-kern:32197a

Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Signed-off-by: Bill O'Donnell <billodo@sgi.com>
Signed-off-by: David Chinner <david@fromorbit.com>
16 years ago[XFS] implement generic xfs_btree_rshift
Christoph Hellwig [Thu, 30 Oct 2008 05:56:43 +0000 (16:56 +1100)]
[XFS] implement generic xfs_btree_rshift

Make the btree right shift code generic. Based on a patch from David
Chinner with lots of changes to follow the original btree implementations
more closely. While this loses some of the generic helper routines for
inserting/moving/removing records it also solves some of the one off bugs
in the original code and makes it easier to verify.

SGI-PV: 985583

SGI-Modid: xfs-linux-melb:xfs-kern:32196a

Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Signed-off-by: Bill O'Donnell <billodo@sgi.com>
Signed-off-by: David Chinner <david@fromorbit.com>
16 years ago[XFS] implement generic xfs_btree_update
Christoph Hellwig [Thu, 30 Oct 2008 05:56:32 +0000 (16:56 +1100)]
[XFS] implement generic xfs_btree_update

From: Dave Chinner <dgc@sgi.com>

The most complicated part here is the lastrec tracking for the alloc
btree. Most logic is in the update_lastrec method which has to do some
hopefully good enough dirty magic to maintain it.

[hch: split out from bigger patch and a rework of the lastrec

logic]

SGI-PV: 985583

SGI-Modid: xfs-linux-melb:xfs-kern:32194a

Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Signed-off-by: Bill O'Donnell <billodo@sgi.com>
Signed-off-by: David Chinner <david@fromorbit.com>
16 years ago[XFS] implement generic xfs_btree_updkey
Christoph Hellwig [Thu, 30 Oct 2008 05:56:22 +0000 (16:56 +1100)]
[XFS] implement generic xfs_btree_updkey

From: Dave Chinner <dgc@sgi.com>

Note that there are many > 80 char lines introduced due to the
xfs_btree_key casts. But the places where this happens is throw-away code
once the whole btree code gets merged into a common implementation.

The same is true for the temporary xfs_alloc_log_keys define to the new
name. All old users will be gone after a few patches.

[hch: split out from bigger patch and minor adaptions]

SGI-PV: 985583

SGI-Modid: xfs-linux-melb:xfs-kern:32193a

Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Signed-off-by: Bill O'Donnell <billodo@sgi.com>
Signed-off-by: David Chinner <david@fromorbit.com>
16 years ago[XFS] implement generic xfs_btree_lookup
Christoph Hellwig [Thu, 30 Oct 2008 05:56:09 +0000 (16:56 +1100)]
[XFS] implement generic xfs_btree_lookup

From: Dave Chinner <dgc@sgi.com>

[hch: split out from bigger patch and minor adaptions]

SGI-PV: 985583

SGI-Modid: xfs-linux-melb:xfs-kern:32192a

Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Signed-off-by: Bill O'Donnell <billodo@sgi.com>
Signed-off-by: David Chinner <david@fromorbit.com>
16 years ago[XFS] implement generic xfs_btree_decrement
Christoph Hellwig [Thu, 30 Oct 2008 05:55:58 +0000 (16:55 +1100)]
[XFS] implement generic xfs_btree_decrement

From: Dave Chinner <dgc@sgi.com>

[hch: split out from bigger patch and minor adaptions]

SGI-PV: 985583

SGI-Modid: xfs-linux-melb:xfs-kern:32191a

Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Signed-off-by: Bill O'Donnell <billodo@sgi.com>
Signed-off-by: David Chinner <david@fromorbit.com>
16 years ago[XFS] implement generic xfs_btree_increment
Christoph Hellwig [Thu, 30 Oct 2008 05:55:45 +0000 (16:55 +1100)]
[XFS] implement generic xfs_btree_increment

From: Dave Chinner <dgc@sgi.com>

Because this is the first major generic btree routine this patch includes
some infrastrucure, first a few routines to deal with a btree block that
can be either in short or long form, second xfs_btree_read_buf_block,
which is the new central routine to read a btree block given a cursor, and
third the new xfs_btree_ptr_addr routine to calculate the address for a
given btree pointer record.

[hch: split out from bigger patch and minor adaptions]

SGI-PV: 985583

SGI-Modid: xfs-linux-melb:xfs-kern:32190a

Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Signed-off-by: Bill O'Donnell <billodo@sgi.com>
Signed-off-by: David Chinner <david@fromorbit.com>
16 years ago[XFS] add helpers for addressing entities inside a btree block
Christoph Hellwig [Thu, 30 Oct 2008 05:55:34 +0000 (16:55 +1100)]
[XFS] add helpers for addressing entities inside a btree block

Add new helpers in xfs_btree.c to find the record, key and block pointer
entries inside a btree block. To implement this genericly the
->get_maxrecs methods and two new xfs_btree_ops entries for the key and
record sizes are used. Also add a big comment describing how the
addressing inside a btree block works.

Note that these helpers are unused until users are introduced in the next
patches and this patch will thus cause some harmless compiler warnings.

SGI-PV: 985583

SGI-Modid: xfs-linux-melb:xfs-kern:32189a

Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Signed-off-by: Bill O'Donnell <billodo@sgi.com>
Signed-off-by: David Chinner <david@fromorbit.com>
16 years ago[XFS] add get_maxrecs btree operation
Christoph Hellwig [Thu, 30 Oct 2008 05:55:23 +0000 (16:55 +1100)]
[XFS] add get_maxrecs btree operation

Factor xfs_btree_maxrecs into a per-btree operation.

The get_maxrecs method is based on a patch from Dave Chinner.

SGI-PV: 985583

SGI-Modid: xfs-linux-melb:xfs-kern:32188a

Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Signed-off-by: Bill O'Donnell <billodo@sgi.com>
Signed-off-by: David Chinner <david@fromorbit.com>
16 years ago[XFS] make btree tracing generic
Christoph Hellwig [Thu, 30 Oct 2008 05:55:13 +0000 (16:55 +1100)]
[XFS] make btree tracing generic

Make the existing bmap btree tracing generic so that it applies to all
btree types.

Some fragments lifted from a patch by Dave Chinner.

SGI-PV: 985583

SGI-Modid: xfs-linux-melb:xfs-kern:32187a

Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Signed-off-by: Bill O'Donnell <billodo@sgi.com>
Signed-off-by: David Chinner <david@fromorbit.com>
16 years ago[XFS] add new btree statistics
David Chinner [Thu, 30 Oct 2008 05:55:03 +0000 (16:55 +1100)]
[XFS] add new btree statistics

From: Dave Chinner <dgc@sgi.com>

Introduce statistics coverage of all the btrees and cover all the btree
operations, not just some.

Invaluable for determining test code coverage of all the btree
operations....

SGI-PV: 985583

SGI-Modid: xfs-linux-melb:xfs-kern:32184a

Signed-off-by: David Chinner <david@fromorbit.com>
Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Signed-off-by: Bill O'Donnell <billodo@sgi.com>
16 years ago[XFS] refactor btree validation helpers
Christoph Hellwig [Thu, 30 Oct 2008 05:54:53 +0000 (16:54 +1100)]
[XFS] refactor btree validation helpers

Move the various btree validation helpers around in xfs_btree.c so that
they are close to each other and in common #ifdef DEBUG sections.

Also add a new xfs_btree_check_ptr helper to check a btree ptr that can be
either long or short form.

Split out from a bigger patch from Dave Chinner with various small changes
applied by me.

SGI-PV: 985583

SGI-Modid: xfs-linux-melb:xfs-kern:32183a

Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Signed-off-by: Bill O'Donnell <billodo@sgi.com>
Signed-off-by: David Chinner <david@fromorbit.com>
16 years ago[XFS] refactor xfs_btree_readahead
Christoph Hellwig [Thu, 30 Oct 2008 05:54:43 +0000 (16:54 +1100)]
[XFS] refactor xfs_btree_readahead

From: Dave Chinner <dgc@sgi.com>

Refactor xfs_btree_readahead to make it more readable:

(a) remove the inline xfs_btree_readahead wrapper and move all checks out

of line into the main routine.

(b) factor out helpers for short/long form btrees

(c) move check for root in inodes from the callers into
xfs_btree_readahead

[hch: split out from a big patch and minor cleanups]

SGI-PV: 985583

SGI-Modid: xfs-linux-melb:xfs-kern:32182a

Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Signed-off-by: Bill O'Donnell <billodo@sgi.com>
Signed-off-by: David Chinner <david@fromorbit.com>
16 years ago[XFS] add a long pointers flag to xfs_btree_cur
Christoph Hellwig [Thu, 30 Oct 2008 05:54:33 +0000 (16:54 +1100)]
[XFS] add a long pointers flag to xfs_btree_cur

Add a flag to the xfs btree cursor when using long (64bit) block pointers
instead of checking btnum == XFS_BTNUM_BMAP.

SGI-PV: 985583

SGI-Modid: xfs-linux-melb:xfs-kern:32181a

Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Signed-off-by: Bill O'Donnell <billodo@sgi.com>
Signed-off-by: David Chinner <david@fromorbit.com>
16 years ago[XFS] make btree root in inode support generic
Christoph Hellwig [Thu, 30 Oct 2008 05:54:22 +0000 (16:54 +1100)]
[XFS] make btree root in inode support generic

The bmap btree is rooted in the inode and not in a disk block. Make the
support for this feature more generic by adding a btree flag to for this
feature instead of relying on the XFS_BTNUM_BMAP btnum check.

Also clean up xfs_btree_get_block where this new flag is used.

Based upon a patch from Dave Chinner.

SGI-PV: 985583

SGI-Modid: xfs-linux-melb:xfs-kern:32180a

Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Signed-off-by: Bill O'Donnell <billodo@sgi.com>
Signed-off-by: David Chinner <david@fromorbit.com>
16 years ago[XFS] add generic btree types
Christoph Hellwig [Thu, 30 Oct 2008 05:54:12 +0000 (16:54 +1100)]
[XFS] add generic btree types

Add generic union types for btree pointers, keys and records. The generic
btree pointer contains either a 32 and 64bit big endian scalar for short
and long form btrees, and the key and record contain the relevant type for
each possible btree.

Split out from a bigger patch from Dave Chinner and simplified a little
further.

SGI-PV: 985583

SGI-Modid: xfs-linux-melb:xfs-kern:32178a

Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Signed-off-by: Bill O'Donnell <billodo@sgi.com>
Signed-off-by: David Chinner <david@fromorbit.com>
16 years ago[XFS] split up xfs_btree_init_cursor
Christoph Hellwig [Thu, 30 Oct 2008 05:53:59 +0000 (16:53 +1100)]
[XFS] split up xfs_btree_init_cursor

xfs_btree_init_cursor contains close to little shared code for the
different btrees and will get even more non-common code in the future.
Split it up into one routine per btree type.

Because xfs_btree_dup_cursor needs to call the init routine for a generic
btree cursor add a new btree operation vector that contains a dup_cursor
method that initializes a new cursor based on an existing one.

The btree operations vector is based on an idea and code from Dave Chinner
and will grow more entries later during this series.

SGI-PV: 985583

SGI-Modid: xfs-linux-melb:xfs-kern:32176a

Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Signed-off-by: Bill O'Donnell <billodo@sgi.com>
Signed-off-by: David Chinner <david@fromorbit.com>
16 years ago[XFS] kill struct xfs_btree_hdr
Christoph Hellwig [Thu, 30 Oct 2008 05:53:47 +0000 (16:53 +1100)]
[XFS] kill struct xfs_btree_hdr

This type is only embedded in struct xfs_btree_block and never used
directly. By moving the fields directly into struct xfs_btree_block a lot
of the macros for struct xfs_btree_sblock and struct xfs_btree_lblock can
be used for struct xfs_btree_block too now which helps greatly with some
of the migrations during implementing the generic btree code.

SGI-PV: 985583

SGI-Modid: xfs-linux-melb:xfs-kern:32174a

Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Signed-off-by: Bill O'Donnell <billodo@sgi.com>
Signed-off-by: David Chinner <david@fromorbit.com>
16 years ago[XFS] Unlock inode before calling xfs_idestroy()
Lachlan McIlroy [Thu, 30 Oct 2008 05:53:38 +0000 (16:53 +1100)]
[XFS] Unlock inode before calling xfs_idestroy()

Lock debugging reported the ilock was being destroyed without being
unlocked. We don't need to lock the inode until we are going to insert it
into the radix tree.

SGI-PV: 987246

SGI-Modid: xfs-linux-melb:xfs-kern:32159a

Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Signed-off-by: Christoph Hellwig <hch@infradead.org>
16 years ago[XFS] Fix use-after-free with log and quotas
Lachlan McIlroy [Thu, 30 Oct 2008 05:53:25 +0000 (16:53 +1100)]
[XFS] Fix use-after-free with log and quotas

Destroying the quota stuff on unmount can access the log - ie
XFS_QM_DONE() ends up in xfs_dqunlock() which calls
xfs_trans_unlocked_item() and then xfs_log_move_tail(). By this time the
log has already been destroyed. Just move the cleanup of the quota code
earlier in xfs_unmountfs() before the call to xfs_log_unmount(). Moving
XFS_QM_DONE() up near XFS_QM_DQPURGEALL() seems like a good spot.

SGI-PV: 987086

SGI-Modid: xfs-linux-melb:xfs-kern:32148a

Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Peter Leckie <pleckie@sgi.com>
16 years ago[XFS] Remove final remnants of dirv1 macros and other stuff
Barry Naujok [Thu, 30 Oct 2008 05:52:35 +0000 (16:52 +1100)]
[XFS] Remove final remnants of dirv1 macros and other stuff

SGI-PV: 981498

SGI-Modid: xfs-linux-melb:xfs-kern:32002a

Signed-off-by: Barry Naujok <bnaujok@sgi.com>
Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
16 years ago[XFS] Use xfs_idestroy() to cleanup an inode.
Lachlan McIlroy [Thu, 30 Oct 2008 05:50:35 +0000 (16:50 +1100)]
[XFS] Use xfs_idestroy() to cleanup an inode.

SGI-PV: 981498

SGI-Modid: xfs-linux-melb:xfs-kern:31927a

Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Signed-off-by: David Chinner <david@fromorbit.com>
16 years ago[XFS] Remove kmem_zone_t argument from xfs_inode_init_once()
Lachlan McIlroy [Thu, 30 Oct 2008 05:42:34 +0000 (16:42 +1100)]
[XFS] Remove kmem_zone_t argument from xfs_inode_init_once()

kmem cache constructor no longer takes a kmem_zone_t argument.

SGI-PV: 957103

SGI-Modid: xfs-linux-melb:xfs-kern:32254a

Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
16 years ago[XFS] Make use of the init-once slab optimisation.
David Chinner [Thu, 30 Oct 2008 05:11:59 +0000 (16:11 +1100)]
[XFS] Make use of the init-once slab optimisation.

To avoid having to initialise some fields of the XFS inode on every
allocation, we can use the slab init-once feature to initialise them. All
we have to guarantee is that when we free the inode, all it's entries are
in the initial state. Add asserts where possible to ensure debug kernels
check this initial state before freeing and after allocation.

SGI-PV: 981498

SGI-Modid: xfs-linux-melb:xfs-kern:31925a

Signed-off-by: David Chinner <david@fromorbit.com>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Signed-off-by: Christoph Hellwig <hch@infradead.org>
16 years agoMerge branch 'tracing-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Tue, 28 Oct 2008 16:52:25 +0000 (09:52 -0700)]
Merge branch 'tracing-fixes-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'tracing-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (31 commits)
  ftrace: fix current_tracer error return
  tracing: fix a build error on alpha
  ftrace: use a real variable for ftrace_nop in x86
  tracing/ftrace: make boot tracer select the sched_switch tracer
  tracepoint: check if the probe has been registered
  asm-generic: define DIE_OOPS in asm-generic
  trace: fix printk warning for u64
  ftrace: warning in kernel/trace/ftrace.c
  ftrace: fix build failure
  ftrace, powerpc, sparc64, x86: remove notrace from arch ftrace file
  ftrace: remove ftrace hash
  ftrace: remove mcount set
  ftrace: remove daemon
  ftrace: disable dynamic ftrace for all archs that use daemon
  ftrace: add ftrace warn on to disable ftrace
  ftrace: only have ftrace_kill atomic
  ftrace: use probe_kernel
  ftrace: comment arch ftrace code
  ftrace: return error on failed modified text.
  ftrace: dynamic ftrace process only text section
  ...