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authorJan Kara <jack@suse.cz>2012-04-25 21:26:54 +0200
committerJan Kara <jack@suse.cz>2012-05-15 23:34:38 +0200
commit0b7f7cefaea96ef25dbe54b8e16d2d61560d8b9d (patch)
tree640e7107056b7cc5cf06b1c03ba569bd241b6c31 /fs/ext4
parent905c3937625d14fa4453a2643814b72b8a22d9ae (diff)
downloadlinux-0b7f7cefaea96ef25dbe54b8e16d2d61560d8b9d.tar.bz2
ext4: Remove i_mutex use from ext4_quota_write()
We don't need i_mutex in ext4_quota_write() because writes to quota file are serialized by dqio_mutex anyway. Changes to quota files outside of quota code are forbidded and enforced by NOATIME and IMMUTABLE bits. Signed-off-by: Jan Kara <jack@suse.cz>
Diffstat (limited to 'fs/ext4')
-rw-r--r--fs/ext4/super.c6
1 files changed, 1 insertions, 5 deletions
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index ceebaf853beb..97938db9f39d 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -4760,7 +4760,6 @@ static ssize_t ext4_quota_write(struct super_block *sb, int type,
return -EIO;
}
- mutex_lock_nested(&inode->i_mutex, I_MUTEX_QUOTA);
bh = ext4_bread(handle, inode, blk, 1, &err);
if (!bh)
goto out;
@@ -4776,16 +4775,13 @@ static ssize_t ext4_quota_write(struct super_block *sb, int type,
err = ext4_handle_dirty_metadata(handle, NULL, bh);
brelse(bh);
out:
- if (err) {
- mutex_unlock(&inode->i_mutex);
+ if (err)
return err;
- }
if (inode->i_size < off + len) {
i_size_write(inode, off + len);
EXT4_I(inode)->i_disksize = inode->i_size;
ext4_mark_inode_dirty(handle, inode);
}
- mutex_unlock(&inode->i_mutex);
return len;
}