diff options
| author | Jan Kara <jack@suse.cz> | 2012-11-13 18:25:38 +0100 |
|---|---|---|
| committer | Ben Hutchings <ben@decadent.org.uk> | 2012-12-06 11:20:27 +0000 |
| commit | 9711ee6c9eff253a85ea67e425d74d6ff5790aad (patch) | |
| tree | b8672ba566f204bb42f506cd59586981201e13ba /fs | |
| parent | d84f59d5a0b8630b22e186d792294924cdde5c54 (diff) | |
reiserfs: Protect reiserfs_quota_write() with write lock
commit 361d94a338a3fd0cee6a4ea32bbc427ba228e628 upstream.
Calls into reiserfs journalling code and reiserfs_get_block() need to
be protected with write lock. We remove write lock around calls to high
level quota code in the next patch so these paths would suddently become
unprotected.
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/reiserfs/super.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/fs/reiserfs/super.c b/fs/reiserfs/super.c index 963b40ae609e..64775e0304da 100644 --- a/fs/reiserfs/super.c +++ b/fs/reiserfs/super.c @@ -2196,7 +2196,9 @@ static ssize_t reiserfs_quota_write(struct super_block *sb, int type, tocopy = sb->s_blocksize - offset < towrite ? sb->s_blocksize - offset : towrite; tmp_bh.b_state = 0; + reiserfs_write_lock(sb); err = reiserfs_get_block(inode, blk, &tmp_bh, GET_BLOCK_CREATE); + reiserfs_write_unlock(sb); if (err) goto out; if (offset || tocopy != sb->s_blocksize) @@ -2212,10 +2214,12 @@ static ssize_t reiserfs_quota_write(struct super_block *sb, int type, flush_dcache_page(bh->b_page); set_buffer_uptodate(bh); unlock_buffer(bh); + reiserfs_write_lock(sb); reiserfs_prepare_for_journal(sb, bh, 1); journal_mark_dirty(current->journal_info, sb, bh); if (!journal_quota) reiserfs_add_ordered_list(inode, bh); + reiserfs_write_unlock(sb); brelse(bh); offset = 0; towrite -= tocopy; |