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authorJan Kara <jack@suse.cz>2008-09-30 19:53:37 +0400
committerMark Fasheh <mfasheh@suse.com>2009-01-05 19:36:57 +0300
commitca785ec66b991e9ca74dd9840fc014487ad095e1 (patch)
tree271c7b36123e9c16f455ecd96352d24ecd20423c /include/linux/quota.h
parentdcb30695f2cac86b71417629a6fe8042b4fe2ab2 (diff)
downloadlinux-ca785ec66b991e9ca74dd9840fc014487ad095e1.tar.xz
quota: Introduce DQUOT_QUOTA_SYS_FILE flag
If filesystem can handle quota files as system files hidden from users, we can skip a lot of cache invalidation, syncing, inode flags setting etc. when turning quotas on, off and quota_sync. Allow filesystem to indicate that it is hiding quota files from users by DQUOT_QUOTA_SYS_FILE flag. 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.h7
1 files changed, 7 insertions, 0 deletions
diff --git a/include/linux/quota.h b/include/linux/quota.h
index 93717abcd35b..80b8807b4988 100644
--- a/include/linux/quota.h
+++ b/include/linux/quota.h
@@ -332,6 +332,13 @@ enum {
#define DQUOT_SUSPENDED (1 << _DQUOT_SUSPENDED)
#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
+ * system file and user cannot
+ * touch it. Filesystem is
+ * responsible for setting
+ * S_NOQUOTA, S_NOATIME flags
+ */
static inline unsigned int dquot_state_flag(unsigned int flags, int type)
{