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authorLachlan McIlroy <lachlan@sgi.com>2007-05-08 05:50:19 +0200
committerTim Shimmin <tes@sgi.com>2007-05-08 05:50:19 +0200
commitf7c66ce3f70d8417de0cfb481ca4e5430382ec5d (patch)
treec9b4d5cb09a9241cb305532edfbd703cd181530d /fs/xfs/linux-2.6
parent[XFS] Fix race in xfs_write() b/w dmapi callout and direct I/O checks. (diff)
downloadlinux-f7c66ce3f70d8417de0cfb481ca4e5430382ec5d.tar.xz
linux-f7c66ce3f70d8417de0cfb481ca4e5430382ec5d.zip
[XFS] Add lockdep support for XFS
SGI-PV: 963965 SGI-Modid: xfs-linux-melb:xfs-kern:28485a Signed-off-by: Lachlan McIlroy <lachlan@sgi.com> Signed-off-by: David Chinner <dgc@sgi.com> Signed-off-by: Tim Shimmin <tes@sgi.com>
Diffstat (limited to 'fs/xfs/linux-2.6')
-rw-r--r--fs/xfs/linux-2.6/mrlock.h12
1 files changed, 12 insertions, 0 deletions
diff --git a/fs/xfs/linux-2.6/mrlock.h b/fs/xfs/linux-2.6/mrlock.h
index af168a1a98c1..c110bb002665 100644
--- a/fs/xfs/linux-2.6/mrlock.h
+++ b/fs/xfs/linux-2.6/mrlock.h
@@ -43,6 +43,18 @@ static inline void mrupdate(mrlock_t *mrp)
mrp->mr_writer = 1;
}
+static inline void mraccess_nested(mrlock_t *mrp, int subclass)
+{
+ down_read_nested(&mrp->mr_lock, subclass);
+}
+
+static inline void mrupdate_nested(mrlock_t *mrp, int subclass)
+{
+ down_write_nested(&mrp->mr_lock, subclass);
+ mrp->mr_writer = 1;
+}
+
+
static inline int mrtryaccess(mrlock_t *mrp)
{
return down_read_trylock(&mrp->mr_lock);