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| author |   Jan Kara <jack@suse.cz> | 2012-04-25 21:24:30 +0200 |
|---|---|---|
| committer | Jan Kara <jack@suse.cz> | 2012-05-15 23:34:37 +0200 |
| commit | 905c3937625d14fa4453a2643814b72b8a22d9ae (patch) | |
| tree | 5eb2a865b1a64c9b15d3e169bf20aac1f77a3373 /fs/ext3 | |
| parent | quota: Fix double lock in add_dquot_ref() with CONFIG_QUOTA_DEBUG (diff) | |
| download | linux-dev-905c3937625d14fa4453a2643814b72b8a22d9ae.tar.xz linux-dev-905c3937625d14fa4453a2643814b72b8a22d9ae.zip | |
ext3: Remove i_mutex use from ext3_quota_write()
We don't need i_mutex in ext3_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/ext3')
| -rw-r--r-- | fs/ext3/super.c | 6 |
1 files changed, 1 insertions, 5 deletions
diff --git a/fs/ext3/super.c b/fs/ext3/super.c index cf0b5921cf0f..7c08c93bb615 100644 --- a/fs/ext3/super.c +++ b/fs/ext3/super.c @@ -3000,7 +3000,6 @@ static ssize_t ext3_quota_write(struct super_block *sb, int type, (unsigned long long)off, (unsigned long long)len); return -EIO; } - mutex_lock_nested(&inode->i_mutex, I_MUTEX_QUOTA); bh = ext3_bread(handle, inode, blk, 1, &err); if (!bh) goto out; @@ -3024,10 +3023,8 @@ static ssize_t ext3_quota_write(struct super_block *sb, int type, } 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); EXT3_I(inode)->i_disksize = inode->i_size; @@ -3035,7 +3032,6 @@ out: inode->i_version++; inode->i_mtime = inode->i_ctime = CURRENT_TIME; ext3_mark_inode_dirty(handle, inode); - mutex_unlock(&inode->i_mutex); return len; } |