From: Darrick J. Wong <darrick.wong@oracle.com>
Date: Mon, 31 Jul 2017 20:08:12 +0000 (-0500)
Subject: xfs: grab dquots without taking the ilock
X-Git-Tag: v4.13.0-rc1~49
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=cb0dc9bfdc83729dbfc323e9223212f6edf4dd60;p=thirdparty%2Fxfsprogs-dev.git

xfs: grab dquots without taking the ilock

Source kernel commit: 50e0bdbe9f48f98bb02eac7030d682f4716884ae

Add a new dqget flag that grabs the dquot without taking the ilock.
This will be used by the scrubber (which will have already grabbed
the ilock) to perform basic sanity checking of the quota data.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Signed-off-by: Eric Sandeen <sandeen@sandeen.net>
---

diff --git a/libxfs/xfs_quota_defs.h b/libxfs/xfs_quota_defs.h
index d69c77227..2834574cb 100644
--- a/libxfs/xfs_quota_defs.h
+++ b/libxfs/xfs_quota_defs.h
@@ -136,6 +136,8 @@ typedef uint16_t	xfs_qwarncnt_t;
  */
 #define XFS_QMOPT_INHERIT	0x1000000
 
+#define XFS_QMOPT_NOLOCK	0x2000000 /* don't ilock during dqget */
+
 /*
  * flags to xfs_trans_mod_dquot.
  */