lwn.git/include/linux/quota.h, branch v2.6.30.10

quota: Remove NODQUOT macro

2009-03-26T01:18:35+00:00

Remove this macro which is just a definition of NULL. Fix a few coding style issues along the way. Signed-off-by: Jan Kara

quota: Add quota reservation claim and released operations

2009-03-26T01:18:24+00:00

Reserved quota will be claimed at the block allocation time. Over-booked quota could be returned back with the release callback function. Signed-off-by: Mingming Cao Signed-off-by: Jan Kara

quota: Add quota reservation support

2009-03-26T01:15:50+00:00

Delayed allocation defers the block allocation at the dirty pages flush-out time, doing quota charge/check at that time is too late. But we can't charge the quota blocks until blocks are really allocated, otherwise users could get overcharged after reboot from system crash. This patch adds quota reservation for delayed allocation. Quota blocks are reserved in memory, inode and quota won't gets dirtied until later block allocation time. Signed-off-by: Mingming Cao Signed-off-by: Jan Kara

quota: Unexport dqblk_v1.h and dqblk_v2.h

2009-01-05T16:40:25+00:00

Unexport header files dqblk_v[12].h since except for quota format ID they don't contain information userspace should be interested in. Move ID definitions to quota.h. Signed-off-by: Jan Kara Signed-off-by: Mark Fasheh

quota: Update version number

2009-01-05T16:40:22+00:00

Increase reported version number of quota support since quota core has changed significantly. Also remove __DQUOT_NUM_VERSION__ since nobody uses it. Signed-off-by: Jan Kara Signed-off-by: Mark Fasheh

quota: Keep which entries were set by SETQUOTA quotactl

2009-01-05T16:40:22+00:00

Quota in a clustered environment needs to synchronize quota information among cluster nodes. This means we have to occasionally update some information in dquot from disk / network. On the other hand we have to be careful not to overwrite changes administrator did via SETQUOTA. So indicate in dquot->dq_flags which entries have been set by SETQUOTA and quota format can clear these flags when it properly propagated the changes. Signed-off-by: Jan Kara Signed-off-by: Mark Fasheh

quota: Allow negative usage of space and inodes

2009-01-05T16:40:21+00:00

For clustered filesystems, it can happen that space / inode usage goes negative temporarily (because some node is allocating another node is freeing and they are not completely in sync). So let quota code allow this and change qsize_t so a signed type so that we don't underflow the variables. Signed-off-by: Jan Kara Signed-off-by: Mark Fasheh

quota: Convert union in mem_dqinfo to a pointer

2009-01-05T16:40:21+00:00

Coming quota support for OCFS2 is going to need quite a bit of additional per-sb quota information. Moreover having fs.h include all the types needed for this structure would be a pain in the a**. So remove the union from mem_dqinfo and add a private pointer for filesystem's use. Signed-off-by: Jan Kara Signed-off-by: Mark Fasheh

quota: Introduce DQUOT_QUOTA_SYS_FILE flag

2009-01-05T16:36:57+00:00

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 Signed-off-by: Mark Fasheh

quota: Allow to separately enable quota accounting and enforcing limits

2009-01-05T16:36:56+00:00

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 Signed-off-by: Mark Fasheh