user/sven/linux.git/include/linux/quota.h, branch v6.4.9

quota: cleanup double word in comment

2022-01-24T13:45:02Z

Remove the second 'handle'. Link: https://lore.kernel.org/r/20220116125936.389767-1-trix@redhat.com Signed-off-by: Tom Rix Signed-off-by: Jan Kara

fs/quota: update quota state flags scheme with project quota flags

2020-11-03T10:16:04Z

Current quota state flags scheme doesn't include project quota and thus shows all flags after DQUOT_USAGE_ENABLED wrong. Fix this and also add DQUOT_NOLIST_DIRTY to the scheme. Link: https://lore.kernel.org/r/1602989814-28922-1-git-send-email-dotdot@yandex-team.ru Signed-off-by: Roman Anufriev Signed-off-by: Jan Kara

fs/quota: handle overflows of sysctl fs.quota.* and report as unsigned long

2019-11-11T10:06:27Z

Quota statistics counted as 64-bit per-cpu counter. Reading sums per-cpu fractions as signed 64-bit int, filters negative values and then reports lower half as signed 32-bit int. Result may looks like: fs.quota.allocated_dquots = 22327 fs.quota.cache_hits = -489852115 fs.quota.drops = -487288718 fs.quota.free_dquots = 22083 fs.quota.lookups = -486883485 fs.quota.reads = 22327 fs.quota.syncs = 335064 fs.quota.writes = 3088689 Values bigger than 2^31-1 reported as negative. All counters except "allocated_dquots" and "free_dquots" are monotonic, thus they should be reported as is without filtering negative values. Kernel doesn't have generic helper for 64-bit sysctl yet, let's use at least unsigned long. Link: https://lore.kernel.org/r/157337934693.2078.9842146413181153727.stgit@buzz Signed-off-by: Konstantin Khlebnikov Signed-off-by: Jan Kara

fs/quota: Replace XQM_MAXQUOTAS usage with MAXQUOTAS

2018-08-22T16:17:29Z

XQM_MAXQUOTAS and MAXQUOTAS are, it appears, equivalent. Replace all usage of XQM_MAXQUOTAS and remove it along with the unused XQM_*QUOTA definitions. Signed-off-by: Jeremy Cline Signed-off-by: Jan Kara

quota: Kill an unused extern entry form quota.h

2018-03-26T11:11:35Z

Kill an unused extern entry from quota.h which is leftover of below patch. [f32764bd2: quota: Convert quota statistics to generic percpu_counter] Signed-off-by: Ritesh Harjani Signed-off-by: Jan Kara

quota: Add lock annotations to struct members

2017-08-21T12:06:46Z

Add annotation which lock protects which struct members to struct dquot and struct mem_dqinfo. Signed-off-by: Jan Kara

quota: Reduce contention on dq_data_lock

2017-08-17T20:07:59Z

dq_data_lock is currently used to protect all modifications of quota accounting information, consistency of quota accounting on the inode, and dquot pointers from inode. As a result contention on the lock can be pretty heavy. Reduce the contention on the lock by protecting quota accounting information by a new dquot->dq_dqb_lock and consistency of quota accounting with inode usage by inode->i_lock. This change reduces time to create 500000 files on ext4 on ramdisk by 50 different processes in separate directories by 6% when user quota is turned on. When those 50 processes belong to 50 different users, the improvement is about 9%. Signed-off-by: Jan Kara

quota: Allow disabling tracking of dirty dquots in a list

2017-08-17T20:00:45Z

Filesystems that are journalling quotas generally don't need tracking of dirty dquots in a list since forcing a transaction commit flushes all quotas anyway. Allow filesystem to say it doesn't want dquots to be tracked as it reduces contention on the dq_list_lock. Signed-off-by: Jan Kara

quota: Remove dq_wait_unused from dquot

2017-08-17T20:00:40Z

Currently every dquot carries a wait_queue_head_t used only when we are turning quotas off to wait for last users to drop dquot references. Since such rare case is not performance sensitive in any means, just use a global waitqueue for this and save space in struct dquot. Also convert the logic to use wait_event() instead of open-coding it. Signed-off-by: Jan Kara

quota: Convert dqio_mutex to rwsem

2017-08-17T16:52:48Z

Convert dqio_mutex to rwsem and call it dqio_sem. No functional changes yet. Signed-off-by: Jan Kara