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reiserfs: Move quota calls out of write lock

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Calls into highlevel quota code cannot happen under the write lock. These
calls take dqio_mutex which ranks above write lock. So drop write lock
before calling back into quota code.

CC: stable@vger.kernel.org # >= 3.0
Signed-off-by: Jan Kara <jack@suse.cz>
This commit is contained in:
Jan Kara
2012-11-13 17:05:14 +01:00
parent 361d94a338
commit 7af1168693
3 changed files with 25 additions and 7 deletions
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10
fs/reiserfs/inode.c
View File

@@ -1782,8 +1782,9 @@ int reiserfs_new_inode(struct reiserfs_transaction_handle *th,
BUG_ON(!th->t_trans_id);
dquot_initialize(inode);
reiserfs_write_unlock(inode->i_sb);
err = dquot_alloc_inode(inode);
reiserfs_write_lock(inode->i_sb);
if (err)
goto out_end_trans;
if (!dir->i_nlink) {
@@ -1979,8 +1980,10 @@ int reiserfs_new_inode(struct reiserfs_transaction_handle *th,
out_end_trans:
journal_end(th, th->t_super, th->t_blocks_allocated);
reiserfs_write_unlock(inode->i_sb);
/* Drop can be outside and it needs more credits so it's better to have it outside */
dquot_drop(inode);
reiserfs_write_lock(inode->i_sb);
inode->i_flags |= S_NOQUOTA;
make_bad_inode(inode);
@@ -3103,10 +3106,9 @@ int reiserfs_setattr(struct dentry *dentry, struct iattr *attr)
/* must be turned off for recursive notify_change calls */
ia_valid = attr->ia_valid &= ~(ATTR_KILL_SUID|ATTR_KILL_SGID);
depth = reiserfs_write_lock_once(inode->i_sb);
if (is_quota_modification(inode, attr))
dquot_initialize(inode);
depth = reiserfs_write_lock_once(inode->i_sb);
if (attr->ia_valid & ATTR_SIZE) {
/* version 2 items will be caught by the s_maxbytes check
** done for us in vmtruncate
@@ -3170,7 +3172,9 @@ int reiserfs_setattr(struct dentry *dentry, struct iattr *attr)
error = journal_begin(&th, inode->i_sb, jbegin_count);
if (error)
goto out;
reiserfs_write_unlock_once(inode->i_sb, depth);
error = dquot_transfer(inode, attr);
depth = reiserfs_write_lock_once(inode->i_sb);
if (error) {
journal_end(&th, inode->i_sb, jbegin_count);
goto out;