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path: root/fs/quota/dquot.c
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Diffstat (limited to 'fs/quota/dquot.c')
-rw-r--r--fs/quota/dquot.c9
1 files changed, 5 insertions, 4 deletions
diff --git a/fs/quota/dquot.c b/fs/quota/dquot.c
index 607c579e5ec..38f7bd559f3 100644
--- a/fs/quota/dquot.c
+++ b/fs/quota/dquot.c
@@ -2042,7 +2042,6 @@ static int vfs_load_quota_inode(struct inode *inode, int type, int format_id,
* changes */
invalidate_bdev(sb->s_bdev);
}
- mutex_lock(&inode->i_mutex);
mutex_lock(&dqopt->dqonoff_mutex);
if (sb_has_quota_loaded(sb, type)) {
error = -EBUSY;
@@ -2054,9 +2053,11 @@ static int vfs_load_quota_inode(struct inode *inode, int type, int format_id,
* possible) Also nobody should write to the file - we use
* special IO operations which ignore the immutable bit. */
down_write(&dqopt->dqptr_sem);
+ mutex_lock_nested(&inode->i_mutex, I_MUTEX_QUOTA);
oldflags = inode->i_flags & (S_NOATIME | S_IMMUTABLE |
S_NOQUOTA);
inode->i_flags |= S_NOQUOTA | S_NOATIME | S_IMMUTABLE;
+ mutex_unlock(&inode->i_mutex);
up_write(&dqopt->dqptr_sem);
sb->dq_op->drop(inode);
}
@@ -2080,7 +2081,6 @@ static int vfs_load_quota_inode(struct inode *inode, int type, int format_id,
goto out_file_init;
}
mutex_unlock(&dqopt->dqio_mutex);
- mutex_unlock(&inode->i_mutex);
spin_lock(&dq_state_lock);
dqopt->flags |= dquot_state_flag(flags, type);
spin_unlock(&dq_state_lock);
@@ -2094,16 +2094,17 @@ out_file_init:
dqopt->files[type] = NULL;
iput(inode);
out_lock:
- mutex_unlock(&dqopt->dqonoff_mutex);
if (oldflags != -1) {
down_write(&dqopt->dqptr_sem);
+ mutex_lock_nested(&inode->i_mutex, I_MUTEX_QUOTA);
/* Set the flags back (in the case of accidental quotaon()
* on a wrong file we don't want to mess up the flags) */
inode->i_flags &= ~(S_NOATIME | S_NOQUOTA | S_IMMUTABLE);
inode->i_flags |= oldflags;
+ mutex_unlock(&inode->i_mutex);
up_write(&dqopt->dqptr_sem);
}
- mutex_unlock(&inode->i_mutex);
+ mutex_unlock(&dqopt->dqonoff_mutex);
out_fmt:
put_quota_format(fmt);