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authorEric Sandeen <sandeen@redhat.com>2014-10-02 09:27:09 +1000
committerDave Chinner <david@fromorbit.com>2014-10-02 09:27:09 +1000
commit5cca3f611d159e5a4a5ec60413bd09948ef40aea (patch)
tree393d1019eb362fc023addf6144972de83fb06dda /fs/xfs/xfs_iomap.c
parent04dd1a0d4b17a71220eae4fb313218f15a49bcdd (diff)
downloadlinux-5cca3f611d159e5a4a5ec60413bd09948ef40aea.tar.bz2
xfs: check for null dquot in xfs_quota_calc_throttle()
Coverity spotted this. Granted, we *just* checked xfs_inod_dquot() in the caller (by calling xfs_quota_need_throttle). However, this is the only place we don't check the return value but the check is cheap and future-proof so add it. Signed-off-by: Eric Sandeen <sandeen@redhat.com> Reviewed-by: Dave Chinner <dchinner@redhat.com> Signed-off-by: Dave Chinner <david@fromorbit.com>
Diffstat (limited to 'fs/xfs/xfs_iomap.c')
-rw-r--r--fs/xfs/xfs_iomap.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/fs/xfs/xfs_iomap.c b/fs/xfs/xfs_iomap.c
index e9c47b6f5e5a..afcf3c926565 100644
--- a/fs/xfs/xfs_iomap.c
+++ b/fs/xfs/xfs_iomap.c
@@ -404,8 +404,8 @@ xfs_quota_calc_throttle(
int shift = 0;
struct xfs_dquot *dq = xfs_inode_dquot(ip, type);
- /* over hi wmark, squash the prealloc completely */
- if (dq->q_res_bcount >= dq->q_prealloc_hi_wmark) {
+ /* no dq, or over hi wmark, squash the prealloc completely */
+ if (!dq || dq->q_res_bcount >= dq->q_prealloc_hi_wmark) {
*qblocks = 0;
*qfreesp = 0;
return;