From: Frederic Weisbecker <fweisbec@gmail.com>
To: Ingo Molnar <mingo@elte.hu>
Cc: LKML <linux-kernel@vger.kernel.org>,
Frederic Weisbecker <fweisbec@gmail.com>,
Christian Kujau <lists@nerdbynature.de>,
Alexander Beregalov <a.beregalov@gmail.com>,
Chris Mason <chris.mason@oracle.com>, Ingo Molnar <mingo@elte.hu>
Subject: [PATCH] reiserfs: Relax reiserfs_xattr_set_handle() while acquiring xattr locks
Date: Thu, 7 Jan 2010 16:00:28 +0100 [thread overview]
Message-ID: <1262876428-4054-1-git-send-regression-fweisbec@gmail.com> (raw)
Fix remaining xattr locks acquired in reiserfs_xattr_set_handle()
while we are holding the reiserfs lock to avoid lock inversions.
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Christian Kujau <lists@nerdbynature.de>
Cc: Alexander Beregalov <a.beregalov@gmail.com>
Cc: Chris Mason <chris.mason@oracle.com>
Cc: Ingo Molnar <mingo@elte.hu>
---
fs/reiserfs/xattr.c | 4 ++++
1 files changed, 4 insertions(+), 0 deletions(-)
diff --git a/fs/reiserfs/xattr.c b/fs/reiserfs/xattr.c
index 35826d2..b91428e 100644
--- a/fs/reiserfs/xattr.c
+++ b/fs/reiserfs/xattr.c
@@ -560,8 +560,12 @@ reiserfs_xattr_set_handle(struct reiserfs_transaction_handle *th,
.ia_size = buffer_size,
.ia_valid = ATTR_SIZE | ATTR_CTIME,
};
+
+ reiserfs_write_unlock(inode->i_sb);
mutex_lock_nested(&dentry->d_inode->i_mutex, I_MUTEX_XATTR);
down_write(&dentry->d_inode->i_alloc_sem);
+ reiserfs_write_lock(inode->i_sb);
+
err = reiserfs_setattr(dentry, &newattrs);
up_write(&dentry->d_inode->i_alloc_sem);
mutex_unlock(&dentry->d_inode->i_mutex);
--
1.6.2.3
reply other threads:[~2010-01-07 15:00 UTC|newest]
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