OpenCloudOS-Kernel/fs/quota
Jan Kara a80b12c3d0 quota: Get rid of nested I_MUTEX_QUOTA locking subclass
So far i_mutex was ranking above dqonoff_mutex and i_mutex on quota files
was special and ranking below dqonoff_mutex (and several other locks).
However there's no real need for i_mutex on quota files to be special.
IO on quota files is serialized by dqio_mutex anyway so we don't need to
take i_mutex when writing to quota files. Other places where we take i_mutex
on quota file can accomodate standard i_mutex lock ranking, we only need
to change the lock ranking to be dqonoff_mutex > i_mutex which is a matter
of changing documentation because there's no place which would enforce
ordering in the other direction.

Signed-off-by: Jan Kara <jack@suse.cz>
2012-05-15 23:34:39 +02:00
..
Kconfig quota: Make QUOTACTL config be selected by its users 2010-10-05 12:16:37 +02:00
Makefile quota: split out compat_sys_quotactl support from quota.c 2010-03-05 00:20:25 +01:00
compat.c quota: split out compat_sys_quotactl support from quota.c 2010-03-05 00:20:25 +01:00
dquot.c quota: Get rid of nested I_MUTEX_QUOTA locking subclass 2012-05-15 23:34:39 +02:00
netlink.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
quota.c Merge branch 'for-linus' of git://oss.sgi.com/xfs/xfs 2012-03-23 09:19:22 -07:00
quota_tree.c quota: Use %pV and __attribute__((format (printf in __quota_error and fix fallout 2011-01-10 19:04:05 +01:00
quota_tree.h quota: Change quota error message to print out disk and function name 2010-07-21 16:05:58 +02:00
quota_v1.c quota: Change quota error message to print out disk and function name 2010-07-21 16:05:58 +02:00
quota_v2.c quota: return -ENOMEM when memory allocation fails 2011-02-24 11:42:44 +01:00
quotaio_v1.h quota: Move quota files into separate directory 2009-03-26 02:18:35 +01:00
quotaio_v2.h quota: Implement quota format with 64-bit space and inode limits 2009-12-10 15:02:54 +01:00