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authorJan Kara <jack@suse.cz>2008-08-20 17:50:32 +0200
committerMark Fasheh <mfasheh@suse.com>2009-01-05 08:36:56 -0800
commitf55abc0fb9c3189de3da829adf3220322c0da43e (patch)
tree0db4b838b0b90f27401783e8e7e45842ec91f90a /include/linux/quota.h
parente4bc7b4b7ff783779b6928d55a9308910bf180a3 (diff)
downloadlinux-next-f55abc0fb9c3189de3da829adf3220322c0da43e.tar.gz
quota: Allow to separately enable quota accounting and enforcing limits
Split DQUOT_USR_ENABLED (and DQUOT_GRP_ENABLED) into DQUOT_USR_USAGE_ENABLED and DQUOT_USR_LIMITS_ENABLED. This way we are able to separately enable / disable whether we should: 1) ignore quotas completely 2) just keep uptodate information about usage 3) actually enforce quota limits This is going to be useful when quota is treated as filesystem metadata - we then want to keep quota information uptodate all the time and just enable / disable limits enforcement. Signed-off-by: Jan Kara <jack@suse.cz> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
Diffstat (limited to 'include/linux/quota.h')
-rw-r--r--include/linux/quota.h30
1 files changed, 26 insertions, 4 deletions
diff --git a/include/linux/quota.h b/include/linux/quota.h
index 9ea468363f9f..93717abcd35b 100644
--- a/include/linux/quota.h
+++ b/include/linux/quota.h
@@ -318,12 +318,34 @@ struct quota_format_type {
struct quota_format_type *qf_next;
};
-#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
+/* Quota state flags - they actually come in two flavors - for users and groups */
+enum {
+ _DQUOT_USAGE_ENABLED = 0, /* Track disk usage for users */
+ _DQUOT_LIMITS_ENABLED, /* Enforce quota limits for users */
+ _DQUOT_SUSPENDED, /* 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 */
+ _DQUOT_STATE_FLAGS
+};
+#define DQUOT_USAGE_ENABLED (1 << _DQUOT_USAGE_ENABLED)
+#define DQUOT_LIMITS_ENABLED (1 << _DQUOT_LIMITS_ENABLED)
+#define DQUOT_SUSPENDED (1 << _DQUOT_SUSPENDED)
+#define DQUOT_STATE_FLAGS (DQUOT_USAGE_ENABLED | DQUOT_LIMITS_ENABLED | \
+ DQUOT_SUSPENDED)
+
+static inline unsigned int dquot_state_flag(unsigned int flags, int type)
+{
+ if (type == USRQUOTA)
+ return flags;
+ return flags << _DQUOT_STATE_FLAGS;
+}
+
+static inline unsigned int dquot_generic_flag(unsigned int flags, int type)
+{
+ if (type == USRQUOTA)
+ return flags;
+ return flags >> _DQUOT_STATE_FLAGS;
+}
struct quota_info {
unsigned int flags; /* Flags for diskquotas on this device */