linux/fs/quota
Jan Kara 26245c949c quota: Cleanup S_NOQUOTA handling
Cleanup handling of S_NOQUOTA inode flag and document it a bit. The flag
does not have to be set under dqptr_sem. Only functions modifying inode's
dquot pointers have to check the flag under dqptr_sem before going forward
with the modification. This way we are sure that we cannot add new dquot
pointers to the inode which is just becoming a quota file.

The good thing about this cleanup is that there are no more places in quota
code which enforce i_mutex vs. dqptr_sem lock ordering (in particular that
dqptr_sem -> i_mutex of quota file). This should silence some (false) lockdep
warnings with ext4 + quota and generally make life of some filesystems easier.

Signed-off-by: Jan Kara <jack@suse.cz>
2010-03-05 00:20:19 +01:00
..
dquot.c quota: Cleanup S_NOQUOTA handling 2010-03-05 00:20:19 +01:00
Kconfig quota: Implement quota format with 64-bit space and inode limits 2009-12-10 15:02:54 +01:00
Makefile quota: remove obsolete comments in fs/quota/Makefile 2009-04-27 16:49:52 +02:00
quota_tree.c quota: Coding style fixes 2009-03-26 02:18:38 +01:00
quota_tree.h
quota_v1.c const: struct quota_format_ops 2009-12-10 15:02:51 +01:00
quota_v2.c quota: Improve checking of quota file header 2009-12-23 13:44:13 +01:00
quota.c VFS: Export dquot_send_warning 2009-12-03 11:53:02 +00:00
quotaio_v1.h
quotaio_v2.h quota: Implement quota format with 64-bit space and inode limits 2009-12-10 15:02:54 +01:00