user/sven/linux.git/include/linux/quota.h, branch v3.4.92

quota: autoload the quota_v2 module for QFMT_VFS_V1 quota format

2013-03-03T22:06:37Z

commit c3ad83d9efdfe6a86efd44945a781f00c879b7b4 upstream. Otherwise, ext4 file systems with the quota featured enable will get a very confusing "No such process" error message if the quota code is built as a module and the quota_v2 module has not been loaded. Signed-off-by: "Theodore Ts'o" Reviewed-by: Carlos Maiolino Acked-by: Jan Kara Signed-off-by: Greg Kroah-Hartman

quota: Pass information that quota is stored in system file to userspace

2012-01-12T12:09:09Z

Quota tools need to know whether quota is stored in a system file or in classical aquota.{user|group} files. So pass this information as a flag in GETINFO quotactl. Signed-off-by: Jan Kara

atomic: use

2011-07-26T23:49:47Z

This allows us to move duplicated code in (atomic_inc_not_zero() for now) to Signed-off-by: Arun Sharma Reviewed-by: Eric Dumazet Cc: Ingo Molnar Cc: David Miller Cc: Eric Dumazet Acked-by: Mike Frysinger Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

quota: Remove unused declaration

2011-07-20T12:31:47Z

There is no point in declaring quotactl() syscall prototype in kernel header and 'make headers_check' complains about it. So just remove those lines. Signed-off-by: Jan Kara

quota: Fix deadlock during path resolution

2011-01-12T18:14:55Z

As Al Viro pointed out path resolution during Q_QUOTAON calls to quotactl is prone to deadlocks. We hold s_umount semaphore for reading during the path resolution and resolution itself may need to acquire the semaphore for writing when e. g. autofs mountpoint is passed. Solve the problem by performing the resolution before we get hold of the superblock (and thus s_umount semaphore). The whole thing is complicated by the fact that some filesystems (OCFS2) ignore the path argument. So to distinguish between filesystem which want the path and which do not we introduce new .quota_on_meta callback which does not get the path. OCFS2 then uses this callback instead of old .quota_on. CC: Al Viro CC: Christoph Hellwig CC: Ted Ts'o CC: Joel Becker Signed-off-by: Jan Kara

quota: Convert quota statistics to generic percpu_counter

2010-05-27T16:56:27Z

Generic per-cpu counter has some memory overhead but it is negligible for modern systems and embedded systems compile without quota support. And code reuse is a good thing. This patch should fix complain from preemptive kernels which was introduced by dde9588853b1bde. [Jan Kara: Fixed patch to work on 32-bit archs as well] Reported-by: Rafael J. Wysocki Signed-off-by: Dmitry Monakhov Signed-off-by: Jan Kara

quota: drop remount argument to ->quota_on and ->quota_off

2010-05-24T12:09:12Z

Remount handling has fully moved into the filesystem, so all this is superflous now. Signed-off-by: Christoph Hellwig Signed-off-by: Jan Kara

quota: unify ->set_dqblk

2010-05-21T17:30:44Z

Pass the larger struct fs_disk_quota to the ->set_dqblk operation so that the Q_SETQUOTA and Q_XSETQUOTA operations can be implemented with a single filesystem operation and we can retire the ->set_xquota operation. The additional information (RT-subvolume accounting and warn counts) are left zero for the VFS quota implementation. Add new fieldmask values for setting the numer of blocks and inodes values which is required for the VFS quota, but wasn't for XFS. Signed-off-by: Christoph Hellwig Signed-off-by: Jan Kara

quota: unify ->get_dqblk

2010-05-21T17:30:43Z

Pass the larger struct fs_disk_quota to the ->get_dqblk operation so that the Q_GETQUOTA and Q_XGETQUOTA operations can be implemented with a single filesystem operation and we can retire the ->get_xquota operation. The additional information (RT-subvolume accounting and warn counts) are left zero for the VFS quota implementation. Signed-off-by: Christoph Hellwig Signed-off-by: Jan Kara

quota: Make quota stat accounting lockless.

2010-05-21T17:30:41Z

Quota stats is mostly writable data structure. Let's alloc percpu bucket for each value. NOTE: dqstats_read() function is racy against dqstats_{inc,dec} and may return inconsistent value. But this is ok since absolute accuracy is not required. Signed-off-by: Dmitry Monakhov Signed-off-by: Jan Kara