quota: Increase size of variables for limits and inode usage
So far quota was fine with quota block limits and inode limits/numbers in
a 32-bit type. Now with rapid increase in storage sizes there are coming
requests to be able to handle quota limits above 4TB / more that 2^32 inodes.
So bump up sizes of types in mem_dqblk structure to 64-bits to be able to
handle this. Also update inode allocation / checking functions to use qsize_t
and make global structure keep quota limits in bytes so that things are
consistent.
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
diff --git a/include/linux/quota.h b/include/linux/quota.h
index 3ce708c..9ea4683 100644
--- a/include/linux/quota.h
+++ b/include/linux/quota.h
@@ -39,15 +39,6 @@
#define __DQUOT_VERSION__ "dquot_6.5.1"
#define __DQUOT_NUM_VERSION__ 6*10000+5*100+1
-/* Size of blocks in which are counted size limits */
-#define QUOTABLOCK_BITS 10
-#define QUOTABLOCK_SIZE (1 << QUOTABLOCK_BITS)
-
-/* Conversion routines from and to quota blocks */
-#define qb2kb(x) ((x) << (QUOTABLOCK_BITS-10))
-#define kb2qb(x) ((x) >> (QUOTABLOCK_BITS-10))
-#define toqb(x) (((x) + QUOTABLOCK_SIZE - 1) >> QUOTABLOCK_BITS)
-
#define MAXQUOTAS 2
#define USRQUOTA 0 /* element used for user quotas */
#define GRPQUOTA 1 /* element used for group quotas */
@@ -80,6 +71,11 @@
#define Q_GETQUOTA 0x800007 /* get user quota structure */
#define Q_SETQUOTA 0x800008 /* set user quota structure */
+/* Size of block in which space limits are passed through the quota
+ * interface */
+#define QIF_DQBLKSIZE_BITS 10
+#define QIF_DQBLKSIZE (1 << QIF_DQBLKSIZE_BITS)
+
/*
* Quota structure used for communication with userspace via quotactl
* Following flags are used to specify which fields are valid
@@ -187,12 +183,12 @@
* Data for one user/group kept in memory
*/
struct mem_dqblk {
- __u32 dqb_bhardlimit; /* absolute limit on disk blks alloc */
- __u32 dqb_bsoftlimit; /* preferred limit on disk blks */
+ qsize_t dqb_bhardlimit; /* absolute limit on disk blks alloc */
+ qsize_t dqb_bsoftlimit; /* preferred limit on disk blks */
qsize_t dqb_curspace; /* current used space */
- __u32 dqb_ihardlimit; /* absolute limit on allocated inodes */
- __u32 dqb_isoftlimit; /* preferred inode limit */
- __u32 dqb_curinodes; /* current # allocated inodes */
+ qsize_t dqb_ihardlimit; /* absolute limit on allocated inodes */
+ qsize_t dqb_isoftlimit; /* preferred inode limit */
+ qsize_t dqb_curinodes; /* current # allocated inodes */
time_t dqb_btime; /* time limit for excessive disk use */
time_t dqb_itime; /* time limit for excessive inode use */
};
@@ -287,9 +283,9 @@
int (*initialize) (struct inode *, int);
int (*drop) (struct inode *);
int (*alloc_space) (struct inode *, qsize_t, int);
- int (*alloc_inode) (const struct inode *, unsigned long);
+ int (*alloc_inode) (const struct inode *, qsize_t);
int (*free_space) (struct inode *, qsize_t);
- int (*free_inode) (const struct inode *, unsigned long);
+ int (*free_inode) (const struct inode *, qsize_t);
int (*transfer) (struct inode *, struct iattr *);
int (*write_dquot) (struct dquot *); /* Ordinary dquot write */
struct dquot *(*alloc_dquot)(struct super_block *, int); /* Allocate memory for new dquot */