linux/fs/quota
Christoph Hellwig 907f4554e2 dquot: move dquot initialization responsibility into the filesystem
Currently various places in the VFS call vfs_dq_init directly.  This means
we tie the quota code into the VFS.  Get rid of that and make the
filesystem responsible for the initialization.   For most metadata operations
this is a straight forward move into the methods, but for truncate and
open it's a bit more complicated.

For truncate we currently only call vfs_dq_init for the sys_truncate case
because open already takes care of it for ftruncate and open(O_TRUNC) - the
new code causes an additional vfs_dq_init for those which is harmless.

For open the initialization is moved from do_filp_open into the open method,
which means it happens slightly earlier now, and only for regular files.
The latter is fine because we don't need to initialize it for operations
on special files, and we already do it as part of the namespace operations
for directories.

Add a dquot_file_open helper that filesystems that support generic quotas
can use to fill in ->open.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jan Kara <jack@suse.cz>
2010-03-05 00:20:30 +01:00
..
compat.c quota: split out compat_sys_quotactl support from quota.c 2010-03-05 00:20:25 +01:00
dquot.c dquot: move dquot initialization responsibility into the filesystem 2010-03-05 00:20:30 +01:00
Kconfig quota: split out compat_sys_quotactl support from quota.c 2010-03-05 00:20:25 +01:00
Makefile quota: split out compat_sys_quotactl support from quota.c 2010-03-05 00:20:25 +01:00
netlink.c quota: split out netlink notification support from quota.c 2010-03-05 00:20:25 +01:00
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 quota: split out compat_sys_quotactl support from quota.c 2010-03-05 00:20:25 +01:00
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