linux-kernel - [PATCH 3.12 010/127] libxfs: clean up _calc_dquots_per

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Date:   Fri, 25 Nov 2016 09:28:43 +0100
From:   Jiri Slaby <jslaby@...e.cz>
To:     stable@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org,
        "Darrick J. Wong" <darrick.wong@...cle.com>,
        Dave Chinner <david@...morbit.com>, Jiri Slaby <jslaby@...e.cz>
Subject: [PATCH 3.12 010/127] libxfs: clean up _calc_dquots_per_chunk

From: "Darrick J. Wong" <darrick.wong@...cle.com>

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

===============

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@...cle.com>
Reviewed-by: Eric Sandeen <sandeen@...hat.com>
Signed-off-by: Dave Chinner <david@...morbit.com>
Signed-off-by: Jiri Slaby <jslaby@...e.cz>
---
 fs/xfs/xfs_dquot.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/fs/xfs/xfs_dquot.c b/fs/xfs/xfs_dquot.c
index 895db7a88412..65d600f0d200 100644
--- a/fs/xfs/xfs_dquot.c
+++ b/fs/xfs/xfs_dquot.c
@@ -312,8 +312,7 @@ xfs_dquot_buf_verify_crc(
 	if (mp->m_quotainfo)
 		ndquots = mp->m_quotainfo->qi_dqperchunk;
 	else
-		ndquots = xfs_qm_calc_dquots_per_chunk(mp,
-					XFS_BB_TO_FSB(mp, bp->b_length));
+		ndquots = xfs_qm_calc_dquots_per_chunk(mp, bp->b_length);
 
 	for (i = 0; i < ndquots; i++, d++) {
 		if (!xfs_verify_cksum((char *)d, sizeof(struct xfs_dqblk),
-- 
2.10.2