Currently we use dqonoff_mutex to serialize quota recovery protection
and turning of quotas on / off. Use s_umount semaphore instead.
Signed-off-by: Jan Kara <jack@xxxxxxx>
---
fs/ocfs2/quota_local.c | 11 +++++++----
1 file changed, 7 insertions(+), 4 deletions(-)
diff --git a/fs/ocfs2/quota_local.c b/fs/ocfs2/quota_local.c
index 8a54fd8a4fa5..32c5a40c1257 100644
--- a/fs/ocfs2/quota_local.c
+++ b/fs/ocfs2/quota_local.c
@@ -454,7 +454,7 @@ struct ocfs2_quota_recovery *ocfs2_begin_quota_recovery(
/* Sync changes in local quota file into global quota file and
* reinitialize local quota file.
* The function expects local quota file to be already locked and
- * dqonoff_mutex locked. */
+ * s_umount locked in shared mode. */
static int ocfs2_recover_local_quota_file(struct inode *lqinode,
int type,
struct ocfs2_quota_recovery *rec)
@@ -597,7 +597,7 @@ int ocfs2_finish_quota_recovery(struct ocfs2_super *osb,
printk(KERN_NOTICE "ocfs2: Finishing quota recovery on device (%s) for "
"slot %u\n", osb->dev_str, slot_num);
- mutex_lock(&sb_dqopt(sb)->dqonoff_mutex);
+ down_read(&sb->s_umount);
for (type = 0; type < OCFS2_MAXQUOTAS; type++) {
if (list_empty(&(rec->r_list[type])))
continue;
@@ -674,7 +674,7 @@ int ocfs2_finish_quota_recovery(struct ocfs2_super *osb,
break;
}
out:
- mutex_unlock(&sb_dqopt(sb)->dqonoff_mutex);
+ up_read(&sb->s_umount);
kfree(rec);
return status;
}
@@ -840,7 +840,10 @@ static int ocfs2_local_free_info(struct super_block *sb, int type)
}
ocfs2_release_local_quota_bitmaps(&oinfo->dqi_chunk);
- /* dqonoff_mutex protects us against racing with recovery thread... */
+ /*
+ * s_umount held in exclusive mode protects us against racing with
+ * recovery thread...
+ */
if (oinfo->dqi_rec) {
ocfs2_free_quota_recovery(oinfo->dqi_rec);
mark_clean = 0;
--
2.6.6
--
To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
