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[XFS] Allow punching holes to free space when at ENOSPC 

Make the free file space transaction able to dip into the reserved blocks
to ensure that we can successfully free blocks when the filesystem is at
ENOSPC.

SGI-PV: 967788
SGI-Modid: xfs-linux-melb:xfs-kern:29167a

Signed-off-by: David Chinner <dgc@sgi.com>
Signed-off-by: Vlad Apostolov <vapo@sgi.com>
Signed-off-by: Tim Shimmin <tes@sgi.com>
This commit is contained in:
David Chinner 2007-07-19 16:28:30 +10:00 committed by Tim Shimmin
parent 4f57dbc6b5
commit 91ebecc74e
1 changed files with 4 additions and 1 deletions
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5
fs/xfs/xfs_vnodeops.c
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@ -4434,9 +4434,12 @@ xfs_free_file_space(
while (!error && !done) { while (!error && !done) {
/* /*
* allocate and setup the transaction * allocate and setup the transaction. Allow this
* transaction to dip into the reserve blocks to ensure
* the freeing of the space succeeds at ENOSPC.
*/ */
tp = xfs_trans_alloc(mp, XFS_TRANS_DIOSTRAT); tp = xfs_trans_alloc(mp, XFS_TRANS_DIOSTRAT);
tp->t_flags |= XFS_TRANS_RESERVE;
error = xfs_trans_reserve(tp, error = xfs_trans_reserve(tp,
resblks, resblks,
XFS_WRITE_LOG_RES(mp), XFS_WRITE_LOG_RES(mp),