quota: quota core changes for quotaon on remount

[GitHub/mt8127/android_kernel_alcatel_ttab.git] / include / linux / quota.h

diff --git a/include/linux/quota.h b/include/linux/quota.h
index 48556b039b1caa7e40a876621e640ca85f9b5ace..52e49dce658402fc652c082ff1e6979ff6ead7e2 100644 (file)
--- a/include/linux/quota.h
+++ b/include/linux/quota.h
@@ -202,6 +202,8 @@ struct quota_format_type;
 
 struct mem_dqinfo {
        struct quota_format_type *dqi_format;
+       int dqi_fmt_id;         /* Id of the dqi_format - used when turning
+                                * quotas on after remount RW */
        struct list_head dqi_dirty_list;        /* List of dirty dquots */
        unsigned long dqi_flags;
        unsigned int dqi_bgrace;
@@ -298,8 +300,8 @@ struct dquot_operations {
 
 /* Operations handling requests from userspace */
 struct quotactl_ops {
-       int (*quota_on)(struct super_block *, int, int, char *);
-       int (*quota_off)(struct super_block *, int);
+       int (*quota_on)(struct super_block *, int, int, char *, int);
+       int (*quota_off)(struct super_block *, int, int);
        int (*quota_sync)(struct super_block *, int);
        int (*get_info)(struct super_block *, int, struct if_dqinfo *);
        int (*set_info)(struct super_block *, int, struct if_dqinfo *);
@@ -320,6 +322,10 @@ struct quota_format_type {
 
 #define DQUOT_USR_ENABLED      0x01            /* User diskquotas enabled */
 #define DQUOT_GRP_ENABLED      0x02            /* Group diskquotas enabled */
+#define DQUOT_USR_SUSPENDED    0x04            /* User diskquotas are off, but
+                                                * we have necessary info in
+                                                * memory to turn them on */
+#define DQUOT_GRP_SUSPENDED    0x08            /* The same for group quotas */
 
 struct quota_info {
        unsigned int flags;                     /* Flags for diskquotas on this device */
@@ -337,6 +343,10 @@ struct quota_info {
 #define sb_any_quota_enabled(sb) (sb_has_quota_enabled(sb, USRQUOTA) | \
                                  sb_has_quota_enabled(sb, GRPQUOTA))
 
+#define sb_has_quota_suspended(sb, type) \
+       ((type) == USRQUOTA ? (sb_dqopt(sb)->flags & DQUOT_USR_SUSPENDED) : \
+                             (sb_dqopt(sb)->flags & DQUOT_GRP_SUSPENDED))
+
 int register_quota_format(struct quota_format_type *fmt);
 void unregister_quota_format(struct quota_format_type *fmt);