ext4: enable quota enforcement based on mount options
When quota information is stored in quota files, we enable only quota
accounting on mount and enforcement is enabled only in response to
Q_QUOTAON quotactl. To make ext4 behavior consistent with XFS, we add a
possibility to enable quota enforcement on mount by specifying
corresponding quota mount option (usrquota, grpquota, prjquota).
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
index ea31931..0c2bf44 100644
--- a/fs/ext4/ext4.h
+++ b/fs/ext4/ext4.h
@@ -1117,9 +1117,15 @@
#define EXT4_MOUNT_POSIX_ACL 0x08000 /* POSIX Access Control Lists */
#define EXT4_MOUNT_NO_AUTO_DA_ALLOC 0x10000 /* No auto delalloc mapping */
#define EXT4_MOUNT_BARRIER 0x20000 /* Use block barriers */
-#define EXT4_MOUNT_QUOTA 0x80000 /* Some quota option set */
-#define EXT4_MOUNT_USRQUOTA 0x100000 /* "old" user quota */
-#define EXT4_MOUNT_GRPQUOTA 0x200000 /* "old" group quota */
+#define EXT4_MOUNT_QUOTA 0x40000 /* Some quota option set */
+#define EXT4_MOUNT_USRQUOTA 0x80000 /* "old" user quota,
+ * enable enforcement for hidden
+ * quota files */
+#define EXT4_MOUNT_GRPQUOTA 0x100000 /* "old" group quota, enable
+ * enforcement for hidden quota
+ * files */
+#define EXT4_MOUNT_PRJQUOTA 0x200000 /* Enable project quota
+ * enforcement */
#define EXT4_MOUNT_DIOREAD_NOLOCK 0x400000 /* Enable support for dio read nolocking */
#define EXT4_MOUNT_JOURNAL_CHECKSUM 0x800000 /* Journal checksums */
#define EXT4_MOUNT_JOURNAL_ASYNC_COMMIT 0x1000000 /* Journal Async Commit */