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quota: Remove dqonoff_mutex

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The only places that were grabbing dqonoff_mutex are functions turning
quotas on and off and these are properly serialized using s_umount
semaphore. Remove dqonoff_mutex.

Signed-off-by: Jan Kara <jack@suse.cz>
This commit is contained in:
Jan Kara
2016-11-23 14:04:55 +01:00
parent 5f530de63c
commit c3b004460d
3 changed files with 23 additions and 59 deletions
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include/linux/quota.h
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@@ -520,7 +520,6 @@ static inline void quota_send_warning(struct kqid qid, dev_t dev,
struct quota_info {
unsigned int flags; /* Flags for diskquotas on this device */
struct mutex dqio_mutex; /* lock device while I/O in progress */
struct mutex dqonoff_mutex; /* Serialize quotaon & quotaoff */
struct inode *files[MAXQUOTAS]; /* inodes of quotafiles */
struct mem_dqinfo info[MAXQUOTAS]; /* Information for each quota type */
const struct quota_format_ops *ops[MAXQUOTAS]; /* Operations for each type */