ext4: don't use MAXQUOTAS value

MAXQUOTAS value defines maximum number of quota types VFS supports.
This isn't necessarily the number of types ext4 supports. Although
ext4 will support project quotas, use ext4 private definition for
consistency with other filesystems.

Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>

3 files changed, 18 insertions, 15 deletions

diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
index f70c3fc94296..1eb5b7b912a8 100644
--- a/fs/ext4/ext4.h
+++ b/fs/ext4/ext4.h
@@ -1175,6 +1175,9 @@ struct ext4_super_block {
 #define EXT4_MF_MNTDIR_SAMPLED  0x0001
 #define EXT4_MF_FS_ABORTED      0x0002  /* Fatal error detected */
 
+/* Number of quota types we support */
+#define EXT4_MAXQUOTAS 2
+
 /*
  * fourth extended-fs super-block data in memory
  */
@@ -1238,7 +1241,7 @@ struct ext4_sb_info {
         u32 s_min_batch_time;
         struct block_device *journal_bdev;
 #ifdef CONFIG_QUOTA
-        char *s_qf_names[MAXQUOTAS];            /* Names of quota files with journalled quota */
+        char *s_qf_names[EXT4_MAXQUOTAS];       /* Names of quota files with journalled quota */
         int s_jquota_fmt;                       /* Format of quota to use */
 #endif
         unsigned int s_want_extra_isize; /* New inodes should reserve # bytes */
diff --git a/fs/ext4/ext4_jbd2.h b/fs/ext4/ext4_jbd2.h
index 17c00ff202f2..9c5b49fb281e 100644
--- a/fs/ext4/ext4_jbd2.h
+++ b/fs/ext4/ext4_jbd2.h
@@ -102,9 +102,9 @@
 #define EXT4_QUOTA_INIT_BLOCKS(sb) 0
 #define EXT4_QUOTA_DEL_BLOCKS(sb) 0
 #endif
-#define EXT4_MAXQUOTAS_TRANS_BLOCKS(sb) (MAXQUOTAS*EXT4_QUOTA_TRANS_BLOCKS(sb))
-#define EXT4_MAXQUOTAS_INIT_BLOCKS(sb) (MAXQUOTAS*EXT4_QUOTA_INIT_BLOCKS(sb))
-#define EXT4_MAXQUOTAS_DEL_BLOCKS(sb) (MAXQUOTAS*EXT4_QUOTA_DEL_BLOCKS(sb))
+#define EXT4_MAXQUOTAS_TRANS_BLOCKS(sb) (EXT4_MAXQUOTAS*EXT4_QUOTA_TRANS_BLOCKS(sb))
+#define EXT4_MAXQUOTAS_INIT_BLOCKS(sb) (EXT4_MAXQUOTAS*EXT4_QUOTA_INIT_BLOCKS(sb))
+#define EXT4_MAXQUOTAS_DEL_BLOCKS(sb) (EXT4_MAXQUOTAS*EXT4_QUOTA_DEL_BLOCKS(sb))
 
 static inline int ext4_jbd2_credits_xattr(struct inode *inode)
 {
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index 4b81747b3a80..a318a2dfc79e 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -822,7 +822,7 @@ static void ext4_put_super(struct super_block *sb)
         percpu_counter_destroy(&sbi->s_dirtyclusters_counter);
         brelse(sbi->s_sbh);
 #ifdef CONFIG_QUOTA
-        for (i = 0; i < MAXQUOTAS; i++)
+        for (i = 0; i < EXT4_MAXQUOTAS; i++)
                 kfree(sbi->s_qf_names[i]);
 #endif
 
@@ -2207,7 +2207,7 @@ static void ext4_orphan_cleanup(struct super_block *sb,
         /* Needed for iput() to work correctly and not trash data */
         sb->s_flags |= MS_ACTIVE;
         /* Turn on quotas so that they are updated correctly */
-        for (i = 0; i < MAXQUOTAS; i++) {
+        for (i = 0; i < EXT4_MAXQUOTAS; i++) {
                 if (EXT4_SB(sb)->s_qf_names[i]) {
                         int ret = ext4_quota_on_mount(sb, i);
                         if (ret < 0)
@@ -2263,7 +2263,7 @@ static void ext4_orphan_cleanup(struct super_block *sb,
                        PLURAL(nr_truncates));
 #ifdef CONFIG_QUOTA
         /* Turn quotas off */
-        for (i = 0; i < MAXQUOTAS; i++) {
+        for (i = 0; i < EXT4_MAXQUOTAS; i++) {
                 if (sb_dqopt(sb)->files[i])
                         dquot_quota_off(sb, i);
         }
@@ -4238,7 +4238,7 @@ failed_mount:
                 remove_proc_entry(sb->s_id, ext4_proc_root);
         }
 #ifdef CONFIG_QUOTA
-        for (i = 0; i < MAXQUOTAS; i++)
+        for (i = 0; i < EXT4_MAXQUOTAS; i++)
                 kfree(sbi->s_qf_names[i]);
 #endif
         ext4_blkdev_remove(sbi);
@@ -4765,7 +4765,7 @@ struct ext4_mount_options {
         u32 s_min_batch_time, s_max_batch_time;
 #ifdef CONFIG_QUOTA
         int s_jquota_fmt;
-        char *s_qf_names[MAXQUOTAS];
+        char *s_qf_names[EXT4_MAXQUOTAS];
 #endif
 };
 
@@ -4795,7 +4795,7 @@ static int ext4_remount(struct super_block *sb, int *flags, char *data)
         old_opts.s_max_batch_time = sbi->s_max_batch_time;
 #ifdef CONFIG_QUOTA
         old_opts.s_jquota_fmt = sbi->s_jquota_fmt;
-        for (i = 0; i < MAXQUOTAS; i++)
+        for (i = 0; i < EXT4_MAXQUOTAS; i++)
                 if (sbi->s_qf_names[i]) {
                         old_opts.s_qf_names[i] = kstrdup(sbi->s_qf_names[i],
                                                          GFP_KERNEL);
@@ -4956,7 +4956,7 @@ static int ext4_remount(struct super_block *sb, int *flags, char *data)
 
 #ifdef CONFIG_QUOTA
         /* Release old quota file names */
-        for (i = 0; i < MAXQUOTAS; i++)
+        for (i = 0; i < EXT4_MAXQUOTAS; i++)
                 kfree(old_opts.s_qf_names[i]);
         if (enable_quota) {
                 if (sb_any_quota_suspended(sb))
@@ -4985,7 +4985,7 @@ restore_opts:
         sbi->s_max_batch_time = old_opts.s_max_batch_time;
 #ifdef CONFIG_QUOTA
         sbi->s_jquota_fmt = old_opts.s_jquota_fmt;
-        for (i = 0; i < MAXQUOTAS; i++) {
+        for (i = 0; i < EXT4_MAXQUOTAS; i++) {
                 kfree(sbi->s_qf_names[i]);
                 sbi->s_qf_names[i] = old_opts.s_qf_names[i];
         }
@@ -5188,7 +5188,7 @@ static int ext4_quota_enable(struct super_block *sb, int type, int format_id,
 {
         int err;
         struct inode *qf_inode;
-        unsigned long qf_inums[MAXQUOTAS] = {
+        unsigned long qf_inums[EXT4_MAXQUOTAS] = {
                 le32_to_cpu(EXT4_SB(sb)->s_es->s_usr_quota_inum),
                 le32_to_cpu(EXT4_SB(sb)->s_es->s_grp_quota_inum)
         };
@@ -5216,13 +5216,13 @@ static int ext4_quota_enable(struct super_block *sb, int type, int format_id,
 static int ext4_enable_quotas(struct super_block *sb)
 {
         int type, err = 0;
-        unsigned long qf_inums[MAXQUOTAS] = {
+        unsigned long qf_inums[EXT4_MAXQUOTAS] = {
                 le32_to_cpu(EXT4_SB(sb)->s_es->s_usr_quota_inum),
                 le32_to_cpu(EXT4_SB(sb)->s_es->s_grp_quota_inum)
         };
 
         sb_dqopt(sb)->flags |= DQUOT_QUOTA_SYS_FILE;
-        for (type = 0; type < MAXQUOTAS; type++) {
+        for (type = 0; type < EXT4_MAXQUOTAS; type++) {
                 if (qf_inums[type]) {
                         err = ext4_quota_enable(sb, type, QFMT_VFS_V1,
                                                 DQUOT_USAGE_ENABLED);