#include "xfs_trans_resv.h"
#include "xfs_bit.h"
#include "xfs_sb.h"
-#include "xfs_ag.h"
#include "xfs_mount.h"
#include "xfs_da_format.h"
#include "xfs_inode.h"
#include "xfs_trace.h"
#include "xfs_icache.h"
#include "xfs_log.h"
-#include "xfs_dinode.h"
/* Kernel only BMAP related definitions and functions */
if (endoff > XFS_ISIZE(ip))
endoff = XFS_ISIZE(ip);
- bp = xfs_buf_get_uncached(XFS_IS_REALTIME_INODE(ip) ?
- mp->m_rtdev_targp : mp->m_ddev_targp,
- BTOBB(mp->m_sb.sb_blocksize), 0);
- if (!bp)
- return -ENOMEM;
-
- xfs_buf_unlock(bp);
-
for (offset = startoff; offset <= endoff; offset = lastoffset + 1) {
uint lock_mode;
ASSERT(imap.br_startblock != DELAYSTARTBLOCK);
if (imap.br_state == XFS_EXT_UNWRITTEN)
continue;
- XFS_BUF_UNDONE(bp);
- XFS_BUF_UNWRITE(bp);
- XFS_BUF_READ(bp);
- XFS_BUF_SET_ADDR(bp, xfs_fsb_to_db(ip, imap.br_startblock));
- if (XFS_FORCED_SHUTDOWN(mp)) {
- error = -EIO;
- break;
- }
- xfs_buf_iorequest(bp);
- error = xfs_buf_iowait(bp);
- if (error) {
- xfs_buf_ioerror_alert(bp,
- "xfs_zero_remaining_bytes(read)");
- break;
- }
+ error = xfs_buf_read_uncached(XFS_IS_REALTIME_INODE(ip) ?
+ mp->m_rtdev_targp : mp->m_ddev_targp,
+ xfs_fsb_to_db(ip, imap.br_startblock),
+ BTOBB(mp->m_sb.sb_blocksize),
+ 0, &bp, NULL);
+ if (error)
+ return error;
+
memset(bp->b_addr +
- (offset - XFS_FSB_TO_B(mp, imap.br_startoff)),
- 0, lastoffset - offset + 1);
- XFS_BUF_UNDONE(bp);
- XFS_BUF_UNREAD(bp);
- XFS_BUF_WRITE(bp);
-
- if (XFS_FORCED_SHUTDOWN(mp)) {
- error = -EIO;
- break;
- }
- xfs_buf_iorequest(bp);
- error = xfs_buf_iowait(bp);
- if (error) {
- xfs_buf_ioerror_alert(bp,
- "xfs_zero_remaining_bytes(write)");
- break;
- }
+ (offset - XFS_FSB_TO_B(mp, imap.br_startoff)),
+ 0, lastoffset - offset + 1);
+
+ error = xfs_bwrite(bp);
+ xfs_buf_relse(bp);
+ if (error)
+ return error;
}
- xfs_buf_free(bp);
return error;
}
xfs_bmap_free_t free_list;
xfs_bmbt_irec_t imap;
xfs_off_t ioffset;
+ xfs_off_t iendoffset;
xfs_extlen_t mod=0;
xfs_mount_t *mp;
int nimap;
inode_dio_wait(VFS_I(ip));
rounding = max_t(xfs_off_t, 1 << mp->m_sb.sb_blocklog, PAGE_CACHE_SIZE);
- ioffset = offset & ~(rounding - 1);
- error = filemap_write_and_wait_range(VFS_I(ip)->i_mapping,
- ioffset, -1);
+ ioffset = round_down(offset, rounding);
+ iendoffset = round_up(offset + len, rounding) - 1;
+ error = filemap_write_and_wait_range(VFS_I(ip)->i_mapping, ioffset,
+ iendoffset);
if (error)
goto out;
- truncate_pagecache_range(VFS_I(ip), ioffset, -1);
+ truncate_pagecache_range(VFS_I(ip), ioffset, iendoffset);
/*
* Need to zero the stuff we're not freeing, on disk.
if (start_boundary < end_boundary - 1) {
/*
- * punch out delayed allocation blocks and the page cache over
- * the conversion range
+ * Writeback the range to ensure any inode size updates due to
+ * appending writes make it to disk (otherwise we could just
+ * punch out the delalloc blocks).
*/
- xfs_ilock(ip, XFS_ILOCK_EXCL);
- error = xfs_bmap_punch_delalloc_range(ip,
- XFS_B_TO_FSBT(mp, start_boundary),
- XFS_B_TO_FSB(mp, end_boundary - start_boundary));
- xfs_iunlock(ip, XFS_ILOCK_EXCL);
+ error = filemap_write_and_wait_range(VFS_I(ip)->i_mapping,
+ start_boundary, end_boundary - 1);
+ if (error)
+ goto out;
truncate_pagecache_range(VFS_I(ip), start_boundary,
end_boundary - 1);
struct xfs_mount *mp = ip->i_mount;
struct xfs_trans *tp;
int error;
- xfs_extnum_t current_ext = 0;
struct xfs_bmap_free free_list;
xfs_fsblock_t first_block;
int committed;
xfs_fileoff_t start_fsb;
+ xfs_fileoff_t next_fsb;
xfs_fileoff_t shift_fsb;
ASSERT(xfs_isilocked(ip, XFS_IOLOCK_EXCL));
trace_xfs_collapse_file_space(ip);
- start_fsb = XFS_B_TO_FSB(mp, offset + len);
+ next_fsb = XFS_B_TO_FSB(mp, offset + len);
shift_fsb = XFS_B_TO_FSB(mp, len);
- /*
- * Writeback the entire file and force remove any post-eof blocks. The
- * writeback prevents changes to the extent list via concurrent
- * writeback and the eofblocks trim prevents the extent shift algorithm
- * from running into a post-eof delalloc extent.
- *
- * XXX: This is a temporary fix until the extent shift loop below is
- * converted to use offsets and lookups within the ILOCK rather than
- * carrying around the index into the extent list for the next
- * iteration.
- */
- error = filemap_write_and_wait(VFS_I(ip)->i_mapping);
+ error = xfs_free_file_space(ip, offset, len);
if (error)
return error;
+
+ /*
+ * Trim eofblocks to avoid shifting uninitialized post-eof preallocation
+ * into the accessible region of the file.
+ */
if (xfs_can_free_eofblocks(ip, true)) {
error = xfs_free_eofblocks(mp, ip, false);
if (error)
return error;
}
- error = xfs_free_file_space(ip, offset, len);
+ /*
+ * Writeback and invalidate cache for the remainder of the file as we're
+ * about to shift down every extent from the collapse range to EOF. The
+ * free of the collapse range above might have already done some of
+ * this, but we shouldn't rely on it to do anything outside of the range
+ * that was freed.
+ */
+ error = filemap_write_and_wait_range(VFS_I(ip)->i_mapping,
+ offset + len, -1);
+ if (error)
+ return error;
+ error = invalidate_inode_pages2_range(VFS_I(ip)->i_mapping,
+ (offset + len) >> PAGE_CACHE_SHIFT, -1);
if (error)
return error;
* We are using the write transaction in which max 2 bmbt
* updates are allowed
*/
- error = xfs_bmap_shift_extents(tp, ip, &done, start_fsb,
- shift_fsb, ¤t_ext,
- &first_block, &free_list,
- XFS_BMAP_MAX_SHIFT_EXTENTS);
+ start_fsb = next_fsb;
+ error = xfs_bmap_shift_extents(tp, ip, start_fsb, shift_fsb,
+ &done, &next_fsb, &first_block, &free_list,
+ XFS_BMAP_MAX_SHIFT_EXTENTS);
if (error)
goto out;
return 0;
}
-int
+static int
xfs_swap_extent_flush(
struct xfs_inode *ip)
{
projects / firefly-linux-kernel-4.4.55.git / blobdiff