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-rw-r--r--Documentation/filesystems/quota.txt22
1 files changed, 14 insertions, 8 deletions
diff --git a/Documentation/filesystems/quota.txt b/Documentation/filesystems/quota.txt
index a590c4093eff..5e8de25bf0f1 100644
--- a/Documentation/filesystems/quota.txt
+++ b/Documentation/filesystems/quota.txt
@@ -3,14 +3,14 @@ Quota subsystem
3=============== 3===============
4 4
5Quota subsystem allows system administrator to set limits on used space and 5Quota subsystem allows system administrator to set limits on used space and
6number of used inodes (inode is a filesystem structure which is associated 6number of used inodes (inode is a filesystem structure which is associated with
7with each file or directory) for users and/or groups. For both used space and 7each file or directory) for users and/or groups. For both used space and number
8number of used inodes there are actually two limits. The first one is called 8of used inodes there are actually two limits. The first one is called softlimit
9softlimit and the second one hardlimit. An user can never exceed a hardlimit 9and the second one hardlimit. An user can never exceed a hardlimit for any
10for any resource. User is allowed to exceed softlimit but only for limited 10resource (unless he has CAP_SYS_RESOURCE capability). User is allowed to exceed
11period of time. This period is called "grace period" or "grace time". When 11softlimit but only for limited period of time. This period is called "grace
12grace time is over, user is not able to allocate more space/inodes until he 12period" or "grace time". When grace time is over, user is not able to allocate
13frees enough of them to get below softlimit. 13more space/inodes until he frees enough of them to get below softlimit.
14 14
15Quota limits (and amount of grace time) are set independently for each 15Quota limits (and amount of grace time) are set independently for each
16filesystem. 16filesystem.
@@ -53,6 +53,12 @@ in parentheses):
53 QUOTA_NL_BSOFTLONGWARN - space (block) softlimit is exceeded 53 QUOTA_NL_BSOFTLONGWARN - space (block) softlimit is exceeded
54 longer than given grace period. 54 longer than given grace period.
55 QUOTA_NL_BSOFTWARN - space (block) softlimit 55 QUOTA_NL_BSOFTWARN - space (block) softlimit
56 - four warnings are also defined for the event when user stops
57 exceeding some limit:
58 QUOTA_NL_IHARDBELOW - inode hardlimit
59 QUOTA_NL_ISOFTBELOW - inode softlimit
60 QUOTA_NL_BHARDBELOW - space (block) hardlimit
61 QUOTA_NL_BSOFTBELOW - space (block) softlimit
56 QUOTA_NL_A_DEV_MAJOR (u32) 62 QUOTA_NL_A_DEV_MAJOR (u32)
57 - major number of a device with the affected filesystem 63 - major number of a device with the affected filesystem
58 QUOTA_NL_A_DEV_MINOR (u32) 64 QUOTA_NL_A_DEV_MINOR (u32)