quota: sb_quota state flags cleanup

- remove hardcoded USRQUOTA/GRPQUOTA flags
- convert int to bool for appropriate functions

Signed-off-by: Dmitry Monakhov <dmonakhov@openvz.org>
Signed-off-by: Jan Kara <jack@suse.cz>

3 files changed, 26 insertions, 23 deletions

diff --git a/fs/quota/dquot.c b/fs/quota/dquot.c
index 4c2213f7ed36..5a831dc5ab28 100644
--- a/fs/quota/dquot.c
+++ b/fs/quota/dquot.c
@@ -1301,7 +1301,7 @@ int dquot_initialize(struct inode *inode, int type)
 {
         unsigned int id = 0;
         int cnt, ret = 0;
-        struct dquot *got[MAXQUOTAS] = { NULL, NULL };
+        struct dquot *got[MAXQUOTAS];
         struct super_block *sb = inode->i_sb;
         qsize_t rsv;
 
@@ -1312,6 +1312,7 @@ int dquot_initialize(struct inode *inode, int type)
 
         /* First get references to structures we might need. */
         for (cnt = 0; cnt < MAXQUOTAS; cnt++) {
+                got[cnt] = NULL;
                 if (type != -1 && cnt != type)
                         continue;
                 switch (cnt) {
diff --git a/include/linux/quota.h b/include/linux/quota.h
index 570348cbccb1..92547a57e25a 100644
--- a/include/linux/quota.h
+++ b/include/linux/quota.h
@@ -357,26 +357,25 @@ enum {
 #define DQUOT_STATE_FLAGS       (DQUOT_USAGE_ENABLED | DQUOT_LIMITS_ENABLED | \
                                  DQUOT_SUSPENDED)
 /* Other quota flags */
-#define DQUOT_QUOTA_SYS_FILE    (1 << 6)        /* Quota file is a special
+#define DQUOT_STATE_LAST        (_DQUOT_STATE_FLAGS * MAXQUOTAS)
+#define DQUOT_QUOTA_SYS_FILE    (1 << DQUOT_STATE_LAST)
+                                                /* Quota file is a special
                                                  * system file and user cannot
                                                  * touch it. Filesystem is
                                                  * responsible for setting
                                                  * S_NOQUOTA, S_NOATIME flags
                                                  */
-#define DQUOT_NEGATIVE_USAGE    (1 << 7)        /* Allow negative quota usage */
+#define DQUOT_NEGATIVE_USAGE    (1 << (DQUOT_STATE_LAST + 1))
+                                               /* Allow negative quota usage */
 
 static inline unsigned int dquot_state_flag(unsigned int flags, int type)
 {
-        if (type == USRQUOTA)
-                return flags;
-        return flags << _DQUOT_STATE_FLAGS;
+        return flags << _DQUOT_STATE_FLAGS * type;
 }
 
 static inline unsigned int dquot_generic_flag(unsigned int flags, int type)
 {
-        if (type == USRQUOTA)
-                return flags;
-        return flags >> _DQUOT_STATE_FLAGS;
+        return (flags >> _DQUOT_STATE_FLAGS * type) & DQUOT_STATE_FLAGS;
 }
 
 #ifdef CONFIG_QUOTA_NETLINK_INTERFACE
diff --git a/include/linux/quotaops.h b/include/linux/quotaops.h
index 8cfd0d44c994..e563a20cff4f 100644
--- a/include/linux/quotaops.h
+++ b/include/linux/quotaops.h
@@ -79,53 +79,56 @@ static inline struct mem_dqinfo *sb_dqinfo(struct super_block *sb, int type)
  * Functions for checking status of quota
  */
 
-static inline int sb_has_quota_usage_enabled(struct super_block *sb, int type)
+static inline bool sb_has_quota_usage_enabled(struct super_block *sb, int type)
 {
         return sb_dqopt(sb)->flags &
                                 dquot_state_flag(DQUOT_USAGE_ENABLED, type);
 }
 
-static inline int sb_has_quota_limits_enabled(struct super_block *sb, int type)
+static inline bool sb_has_quota_limits_enabled(struct super_block *sb, int type)
 {
         return sb_dqopt(sb)->flags &
                                 dquot_state_flag(DQUOT_LIMITS_ENABLED, type);
 }
 
-static inline int sb_has_quota_suspended(struct super_block *sb, int type)
+static inline bool sb_has_quota_suspended(struct super_block *sb, int type)
 {
         return sb_dqopt(sb)->flags &
                                 dquot_state_flag(DQUOT_SUSPENDED, type);
 }
 
-static inline int sb_any_quota_suspended(struct super_block *sb)
+static inline unsigned sb_any_quota_suspended(struct super_block *sb)
 {
-        return sb_has_quota_suspended(sb, USRQUOTA) ||
-                sb_has_quota_suspended(sb, GRPQUOTA);
+        unsigned type, tmsk = 0;
+        for (type = 0; type < MAXQUOTAS; type++)
+                tmsk |= sb_has_quota_suspended(sb, type) << type;
+        return tmsk;
 }
 
 /* Does kernel know about any quota information for given sb + type? */
-static inline int sb_has_quota_loaded(struct super_block *sb, int type)
+static inline bool sb_has_quota_loaded(struct super_block *sb, int type)
 {
         /* Currently if anything is on, then quota usage is on as well */
         return sb_has_quota_usage_enabled(sb, type);
 }
 
-static inline int sb_any_quota_loaded(struct super_block *sb)
+static inline unsigned sb_any_quota_loaded(struct super_block *sb)
 {
-        return sb_has_quota_loaded(sb, USRQUOTA) ||
-                sb_has_quota_loaded(sb, GRPQUOTA);
+        unsigned type, tmsk = 0;
+        for (type = 0; type < MAXQUOTAS; type++)
+                tmsk |= sb_has_quota_loaded(sb, type) << type;
+        return  tmsk;
 }
 
-static inline int sb_has_quota_active(struct super_block *sb, int type)
+static inline bool sb_has_quota_active(struct super_block *sb, int type)
 {
         return sb_has_quota_loaded(sb, type) &&
                !sb_has_quota_suspended(sb, type);
 }
 
-static inline int sb_any_quota_active(struct super_block *sb)
+static inline unsigned sb_any_quota_active(struct super_block *sb)
 {
-        return sb_has_quota_active(sb, USRQUOTA) ||
-               sb_has_quota_active(sb, GRPQUOTA);
+        return sb_any_quota_loaded(sb) & ~sb_any_quota_suspended(sb);
 }
 
 /*