kernel-ark/fs/nilfs2
Ryusuke Konishi e3154e9748 nilfs2: get rid of nilfs_sb_info structure
This directly uses sb->s_fs_info to keep a nilfs filesystem object and
fully removes the intermediate nilfs_sb_info structure.  With this
change, the hierarchy of on-memory structures of nilfs will be
simplified as follows:

Before:
  super_block
       -> nilfs_sb_info
             -> the_nilfs
                   -> cptree --+-> nilfs_root (current file system)
                               +-> nilfs_root (snapshot A)
                               +-> nilfs_root (snapshot B)
                               :
             -> nilfs_sc_info (log writer structure)
After:
  super_block
       -> the_nilfs
             -> cptree --+-> nilfs_root (current file system)
                         +-> nilfs_root (snapshot A)
                         +-> nilfs_root (snapshot B)
                         :
             -> nilfs_sc_info (log writer structure)

The reason why we didn't design so from the beginning is because the
initial shape also differed from the above.  The early hierachy was
composed of "per-mount-point" super_block -> nilfs_sb_info pairs and a
shared nilfs object.  On the kernel 2.6.37, it was changed to the
current shape in order to unify super block instances into one per
device, and this cleanup became applicable as the result.

Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
2011-03-09 11:54:26 +09:00
..
alloc.c nilfs2: add free entries count only if clear bit operation succeeded 2011-03-08 14:58:04 +09:00
alloc.h nilfs2: add kernel doc comments to persistent object allocator functions 2010-05-10 11:32:31 +09:00
bmap.c nilfs2: get rid of nilfs_sb_info structure 2011-03-09 11:54:26 +09:00
bmap.h nilfs2: record used amount of each checkpoint in checkpoint list 2011-03-08 14:58:31 +09:00
btnode.c mm: prevent concurrent unmap_mapping_range() on the same inode 2011-02-23 19:52:52 -08:00
btnode.h mm: prevent concurrent unmap_mapping_range() on the same inode 2011-02-23 19:52:52 -08:00
btree.c nilfs2: record used amount of each checkpoint in checkpoint list 2011-03-08 14:58:31 +09:00
btree.h nilfs2: get rid of nilfs_bmap_union 2010-07-23 10:02:14 +09:00
cpfile.c nilfs2: see state of root dentry for mount check of snapshots 2010-10-23 09:24:38 +09:00
cpfile.h nilfs2: use iget for all metadata files 2010-10-23 09:24:38 +09:00
dat.c nilfs2: fix typo in comment of nilfs_dat_move function 2010-11-24 12:51:48 +09:00
dat.h nilfs2: use iget for all metadata files 2010-10-23 09:24:38 +09:00
dir.c nilfs2: add compat ioctl 2011-03-08 14:58:30 +09:00
direct.c nilfs2: record used amount of each checkpoint in checkpoint list 2011-03-08 14:58:31 +09:00
direct.h nilfs2: get rid of nilfs_bmap_union 2010-07-23 10:02:14 +09:00
export.h nilfs2: make snapshots in checkpoint tree exportable 2010-10-23 09:24:34 +09:00
file.c nilfs2: get rid of nilfs_sb_info structure 2011-03-09 11:54:26 +09:00
gcinode.c nilfs2: fix regression of garbage collection ioctl 2010-12-16 14:35:18 +09:00
ifile.c nilfs2: call nilfs_error inside bmap routines 2011-01-10 14:05:45 +09:00
ifile.h nilfs2: use iget for all metadata files 2010-10-23 09:24:38 +09:00
inode.c nilfs2: get rid of nilfs_sb_info structure 2011-03-09 11:54:26 +09:00
ioctl.c nilfs2: get rid of nilfs_sb_info structure 2011-03-09 11:54:26 +09:00
Kconfig Revert "task_struct: make journal_info conditional" 2009-12-17 13:23:24 -08:00
Makefile nilfs2: get rid of GCDAT inode 2010-10-23 09:24:38 +09:00
mdt.c mm: prevent concurrent unmap_mapping_range() on the same inode 2011-02-23 19:52:52 -08:00
mdt.h nilfs2: get rid of nilfs_sb_info structure 2011-03-09 11:54:26 +09:00
namei.c nilfs2: get rid of nilfs_sb_info structure 2011-03-09 11:54:26 +09:00
nilfs.h nilfs2: get rid of nilfs_sb_info structure 2011-03-09 11:54:26 +09:00
page.c mm: prevent concurrent unmap_mapping_range() on the same inode 2011-02-23 19:52:52 -08:00
page.h mm: prevent concurrent unmap_mapping_range() on the same inode 2011-02-23 19:52:52 -08:00
recovery.c nilfs2: use sb instance instead of nilfs_sb_info struct 2011-03-09 11:05:08 +09:00
segbuf.c nilfs2: get rid of bdi from nilfs object 2010-10-23 09:24:39 +09:00
segbuf.h nilfs2: get rid of macros for segment summary information 2010-07-23 10:02:09 +09:00
segment.c nilfs2: get rid of nilfs_sb_info structure 2011-03-09 11:54:26 +09:00
segment.h nilfs2: get rid of nilfs_sb_info structure 2011-03-09 11:54:26 +09:00
sufile.c nilfs2: get rid of mi_nilfs back pointer to nilfs object 2010-10-23 09:24:38 +09:00
sufile.h nilfs2: get rid of mi_nilfs back pointer to nilfs object 2010-10-23 09:24:38 +09:00
super.c nilfs2: get rid of nilfs_sb_info structure 2011-03-09 11:54:26 +09:00
the_nilfs.c nilfs2: use sb instance instead of nilfs_sb_info struct 2011-03-09 11:05:08 +09:00
the_nilfs.h nilfs2: get rid of nilfs_sb_info structure 2011-03-09 11:54:26 +09:00