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| author | Chandan Babu R <chandanrlinux@gmail.com> | 2021-01-22 16:48:11 -0800 |
|---|---|---|
| committer | Darrick J. Wong <djwong@kernel.org> | 2021-01-22 16:54:47 -0800 |
| commit | 727e1acd297cae15449607d6e2ee39c71216cf1a (patch) | |
| tree | 3057407785005630e7d01a6a6ed491a5c31fdde8 /fs/xfs/xfs_dquot.c | |
| parent | b9b7e1dc56c5ca8d6fc37c410b054e9f26737d2e (diff) | |
| download | linux-727e1acd297cae15449607d6e2ee39c71216cf1a.tar.gz linux-727e1acd297cae15449607d6e2ee39c71216cf1a.tar.bz2 linux-727e1acd297cae15449607d6e2ee39c71216cf1a.zip | |
xfs: Check for extent overflow when trivally adding a new extent
When adding a new data extent (without modifying an inode's existing
extents) the extent count increases only by 1. This commit checks for
extent count overflow in such cases.
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Allison Henderson <allison.henderson@oracle.com>
Signed-off-by: Chandan Babu R <chandanrlinux@gmail.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Diffstat (limited to 'fs/xfs/xfs_dquot.c')
| -rw-r--r-- | fs/xfs/xfs_dquot.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/fs/xfs/xfs_dquot.c b/fs/xfs/xfs_dquot.c index 1d95ed387d66..175f544f7c45 100644 --- a/fs/xfs/xfs_dquot.c +++ b/fs/xfs/xfs_dquot.c @@ -314,8 +314,14 @@ xfs_dquot_disk_alloc( return -ESRCH; } - /* Create the block mapping. */ xfs_trans_ijoin(tp, quotip, XFS_ILOCK_EXCL); + + error = xfs_iext_count_may_overflow(quotip, XFS_DATA_FORK, + XFS_IEXT_ADD_NOSPLIT_CNT); + if (error) + return error; + + /* Create the block mapping. */ error = xfs_bmapi_write(tp, quotip, dqp->q_fileoffset, XFS_DQUOT_CLUSTER_SIZE_FSB, XFS_BMAPI_METADATA, 0, &map, &nmaps); |