Merge branch 'fixes' of git://git.linaro.org/people/rmk/linux-arm

[cascardo/linux.git] / fs / xfs / xfs_discard.c

diff --git a/fs/xfs/xfs_discard.c b/fs/xfs/xfs_discard.c
index f9c3fe3..69cf4fc 100644 (file)
--- a/fs/xfs/xfs_discard.c
+++ b/fs/xfs/xfs_discard.c
@@ -179,12 +179,14 @@ xfs_ioc_trim(
         * used by the fstrim application.  In the end it really doesn't
         * matter as trimming blocks is an advisory interface.
         */
+       if (range.start >= XFS_FSB_TO_B(mp, mp->m_sb.sb_dblocks) ||
+           range.minlen > XFS_FSB_TO_B(mp, XFS_ALLOC_AG_MAX_USABLE(mp)))
+               return -XFS_ERROR(EINVAL);
+
        start = BTOBB(range.start);
        end = start + BTOBBT(range.len) - 1;
        minlen = BTOBB(max_t(u64, granularity, range.minlen));
 
-       if (XFS_BB_TO_FSB(mp, start) >= mp->m_sb.sb_dblocks)
-               return -XFS_ERROR(EINVAL);
        if (end > XFS_FSB_TO_BB(mp, mp->m_sb.sb_dblocks) - 1)
                end = XFS_FSB_TO_BB(mp, mp->m_sb.sb_dblocks)- 1;