From: Christoph Hellwig Date: Sat, 19 Nov 2011 18:13:38 +0000 (-0500) Subject: xfs: fix xfs_mark_inode_dirty during umount X-Git-Tag: firefly_0821_release~7541^2~2229 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=afd717d6cd334fc89f3ac938e19aade2f939b629;p=firefly-linux-kernel-4.4.55.git xfs: fix xfs_mark_inode_dirty during umount commit 866e4ed77448a0c311e1b055eb72ea05423fd799 upstream. During umount we do not add a dirty inode to the lru and wait for it to become clean first, but force writeback of data and metadata with I_WILL_FREE set. Currently there is no way for XFS to detect that the inode has been redirtied for metadata operations, as we skip the mark_inode_dirty call during teardown. Fix this by setting i_update_core nanually in that case, so that the inode gets flushed during inode reclaim. Alternatively we could enable calling mark_inode_dirty for inodes in I_WILL_FREE state, and let the VFS dirty tracking handle this. I decided against this as we will get better I/O patterns from reclaim compared to the synchronous writeout in write_inode_now, and always marking the inode dirty in some way from xfs_mark_inode_dirty is a better safetly net in either case. Signed-off-by: Christoph Hellwig Reviewed-by: Dave Chinner Signed-off-by: Alex Elder Signed-off-by: Greg Kroah-Hartman --- diff --git a/fs/xfs/linux-2.6/xfs_iops.c b/fs/xfs/linux-2.6/xfs_iops.c index d44d92cd12b1..a9b3e1e7112e 100644 --- a/fs/xfs/linux-2.6/xfs_iops.c +++ b/fs/xfs/linux-2.6/xfs_iops.c @@ -69,9 +69,8 @@ xfs_synchronize_times( } /* - * If the linux inode is valid, mark it dirty. - * Used when committing a dirty inode into a transaction so that - * the inode will get written back by the linux code + * If the linux inode is valid, mark it dirty, else mark the dirty state + * in the XFS inode to make sure we pick it up when reclaiming the inode. */ void xfs_mark_inode_dirty_sync( @@ -81,6 +80,10 @@ xfs_mark_inode_dirty_sync( if (!(inode->i_state & (I_WILL_FREE|I_FREEING))) mark_inode_dirty_sync(inode); + else { + barrier(); + ip->i_update_core = 1; + } } void @@ -91,6 +94,11 @@ xfs_mark_inode_dirty( if (!(inode->i_state & (I_WILL_FREE|I_FREEING))) mark_inode_dirty(inode); + else { + barrier(); + ip->i_update_core = 1; + } + } /*