diff options
| author | Brian Foster <bfoster@redhat.com> | 2014-07-24 19:56:08 +1000 |
|---|---|---|
| committer | Dave Chinner <david@fromorbit.com> | 2014-07-24 19:56:08 +1000 |
| commit | f074051ff550f9f1f1a8ab4868277d049a7fd7aa (patch) | |
| tree | 9009e61e9af493336bc869535426c286960eaf7e /fs/xfs | |
| parent | dc06f398f00059707236d456d954a3a9d2a829db (diff) | |
| download | linux-f074051ff550f9f1f1a8ab4868277d049a7fd7aa.tar.bz2 | |
xfs: squash prealloc while over quota free space as well
From: Brian Foster <bfoster@redhat.com>
Commit 4d559a3b introduced heavy prealloc. squashing to catch the case
of requesting too large a prealloc on smaller filesystems, leading to
repeated flush and retry cycles that occur on ENOSPC. Now that we issue
eofblocks scans on EDQUOT/ENOSPC, squash the prealloc against the
minimum available free space across all applicable quotas as well to
avoid a similar problem of repeated eofblocks scans.
Signed-off-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
Diffstat (limited to 'fs/xfs')
| -rw-r--r-- | fs/xfs/xfs_iomap.c | 20 |
1 files changed, 14 insertions, 6 deletions
diff --git a/fs/xfs/xfs_iomap.c b/fs/xfs/xfs_iomap.c index 923c044bd26f..783b3b1b0684 100644 --- a/fs/xfs/xfs_iomap.c +++ b/fs/xfs/xfs_iomap.c @@ -397,7 +397,8 @@ xfs_quota_calc_throttle( struct xfs_inode *ip, int type, xfs_fsblock_t *qblocks, - int *qshift) + int *qshift, + int64_t *qfreesp) { int64_t freesp; int shift = 0; @@ -406,6 +407,7 @@ xfs_quota_calc_throttle( /* over hi wmark, squash the prealloc completely */ if (dq->q_res_bcount >= dq->q_prealloc_hi_wmark) { *qblocks = 0; + *qfreesp = 0; return; } @@ -418,6 +420,9 @@ xfs_quota_calc_throttle( shift += 2; } + if (freesp < *qfreesp) + *qfreesp = freesp; + /* only overwrite the throttle values if we are more aggressive */ if ((freesp >> shift) < (*qblocks >> *qshift)) { *qblocks = freesp; @@ -476,15 +481,18 @@ xfs_iomap_prealloc_size( } /* - * Check each quota to cap the prealloc size and provide a shift - * value to throttle with. + * Check each quota to cap the prealloc size, provide a shift value to + * throttle with and adjust amount of available space. */ if (xfs_quota_need_throttle(ip, XFS_DQ_USER, alloc_blocks)) - xfs_quota_calc_throttle(ip, XFS_DQ_USER, &qblocks, &qshift); + xfs_quota_calc_throttle(ip, XFS_DQ_USER, &qblocks, &qshift, + &freesp); if (xfs_quota_need_throttle(ip, XFS_DQ_GROUP, alloc_blocks)) - xfs_quota_calc_throttle(ip, XFS_DQ_GROUP, &qblocks, &qshift); + xfs_quota_calc_throttle(ip, XFS_DQ_GROUP, &qblocks, &qshift, + &freesp); if (xfs_quota_need_throttle(ip, XFS_DQ_PROJ, alloc_blocks)) - xfs_quota_calc_throttle(ip, XFS_DQ_PROJ, &qblocks, &qshift); + xfs_quota_calc_throttle(ip, XFS_DQ_PROJ, &qblocks, &qshift, + &freesp); /* * The final prealloc size is set to the minimum of free space available |