diff options
| author | Ingo Molnar <mingo@elte.hu> | 2010-09-21 13:56:43 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2010-09-21 13:56:49 +0200 |
| commit | cf84fd96323633be7d437e1de4505fc82ff2c11a (patch) | |
| tree | 094b7a7421945c9ea244f3605378065935f1c100 /fs/xfs/xfs_vnodeops.c | |
| parent | 31915ab4cbf507aadab40847cf9989da5e88b090 (diff) | |
| parent | b30a3f6257ed2105259b404d419b4964e363928c (diff) | |
Merge commit 'v2.6.36-rc5' into sched/core
Merge reason: Pick up the latest fixes in -rc5.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'fs/xfs/xfs_vnodeops.c')
| -rw-r--r-- | fs/xfs/xfs_vnodeops.c | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/fs/xfs/xfs_vnodeops.c b/fs/xfs/xfs_vnodeops.c index 66d585c6917..4c7c7bfb2b2 100644 --- a/fs/xfs/xfs_vnodeops.c +++ b/fs/xfs/xfs_vnodeops.c @@ -2299,15 +2299,22 @@ xfs_alloc_file_space( e = allocatesize_fsb; } + /* + * The transaction reservation is limited to a 32-bit block + * count, hence we need to limit the number of blocks we are + * trying to reserve to avoid an overflow. We can't allocate + * more than @nimaps extents, and an extent is limited on disk + * to MAXEXTLEN (21 bits), so use that to enforce the limit. + */ + resblks = min_t(xfs_fileoff_t, (e - s), (MAXEXTLEN * nimaps)); if (unlikely(rt)) { - resrtextents = qblocks = (uint)(e - s); + resrtextents = qblocks = resblks; resrtextents /= mp->m_sb.sb_rextsize; resblks = XFS_DIOSTRAT_SPACE_RES(mp, 0); quota_flag = XFS_QMOPT_RES_RTBLKS; } else { resrtextents = 0; - resblks = qblocks = \ - XFS_DIOSTRAT_SPACE_RES(mp, (uint)(e - s)); + resblks = qblocks = XFS_DIOSTRAT_SPACE_RES(mp, resblks); quota_flag = XFS_QMOPT_RES_REGBLKS; } |