[PATCH 4.8 018/138] libxfs: clean up _calc_dquots_per_chunk

From: Greg Kroah-Hartman
Date: Wed Nov 09 2016 - 06:05:29 EST


4.8-stable review patch. If anyone has any objections, please let me know.

------------------

From: Darrick J. Wong <darrick.wong@xxxxxxxxxx>

commit 58d789678546d46d7bbd809dd7dab417c0f23655 upstream.

The function xfs_calc_dquots_per_chunk takes a parameter in units
of basic blocks. The kernel seems to get the units wrong, but
userspace got 'fixed' by commenting out the unnecessary conversion.
Fix both.

Signed-off-by: Darrick J. Wong <darrick.wong@xxxxxxxxxx>
Reviewed-by: Eric Sandeen <sandeen@xxxxxxxxxx>
Signed-off-by: Dave Chinner <david@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
fs/xfs/libxfs/xfs_dquot_buf.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)

--- a/fs/xfs/libxfs/xfs_dquot_buf.c
+++ b/fs/xfs/libxfs/xfs_dquot_buf.c
@@ -191,8 +191,7 @@ xfs_dquot_buf_verify_crc(
if (mp->m_quotainfo)
ndquots = mp->m_quotainfo->qi_dqperchunk;
else
- ndquots = xfs_calc_dquots_per_chunk(
- XFS_BB_TO_FSB(mp, bp->b_length));
+ ndquots = xfs_calc_dquots_per_chunk(bp->b_length);

for (i = 0; i < ndquots; i++, d++) {
if (!xfs_verify_cksum((char *)d, sizeof(struct xfs_dqblk),