tmp_suning_uos_patched/fs/squashfs
Jan Blunck db71922217 BKL: Explicitly add BKL around get_sb/fill_super
This patch is a preparation necessary to remove the BKL from do_new_mount().
It explicitly adds calls to lock_kernel()/unlock_kernel() around
get_sb/fill_super operations for filesystems that still uses the BKL.

I've read through all the code formerly covered by the BKL inside
do_kern_mount() and have satisfied myself that it doesn't need the BKL
any more.

do_kern_mount() is already called without the BKL when mounting the rootfs
and in nfsctl. do_kern_mount() calls vfs_kern_mount(), which is called
from various places without BKL: simple_pin_fs(), nfs_do_clone_mount()
through nfs_follow_mountpoint(), afs_mntpt_do_automount() through
afs_mntpt_follow_link(). Both later functions are actually the filesystems
follow_link inode operation. vfs_kern_mount() is calling the specified
get_sb function and lets the filesystem do its job by calling the given
fill_super function.

Therefore I think it is safe to push down the BKL from the VFS to the
low-level filesystems get_sb/fill_super operation.

[arnd: do not add the BKL to those file systems that already
       don't use it elsewhere]

Signed-off-by: Jan Blunck <jblunck@infradead.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Matthew Wilcox <matthew@wil.cx>
Cc: Christoph Hellwig <hch@infradead.org>
2010-10-04 21:10:10 +02:00
..
block.c squashfs: fix potential buffer over-run on 4K block file systems 2010-04-25 02:09:05 +01:00
cache.c Squashfs: factor out remaining zlib dependencies into separate wrapper file 2010-01-20 21:47:47 +00:00
decompressor.c Squashfs: Add LZO compression support 2010-08-05 02:29:59 +01:00
decompressor.h Squashfs: add a decompressor framework 2010-01-20 21:47:47 +00:00
dir.c Squashfs: factor out remaining zlib dependencies into separate wrapper file 2010-01-20 21:47:47 +00:00
export.c Squashfs: factor out remaining zlib dependencies into separate wrapper file 2010-01-20 21:47:47 +00:00
file.c Squashfs: factor out remaining zlib dependencies into separate wrapper file 2010-01-20 21:47:47 +00:00
fragment.c Squashfs: factor out remaining zlib dependencies into separate wrapper file 2010-01-20 21:47:47 +00:00
id.c Squashfs: factor out remaining zlib dependencies into separate wrapper file 2010-01-20 21:47:47 +00:00
inode.c squashfs: add xattr support configure option 2010-05-17 19:54:07 +01:00
Kconfig Squashfs: update Kconfig and documentation for LZO 2010-08-05 23:42:54 +01:00
lzo_wrapper.c Squashfs: fix block size use in LZO decompressor 2010-08-05 04:51:50 +01:00
Makefile Squashfs: Add LZO compression support 2010-08-05 02:29:59 +01:00
namei.c squashfs: add xattr support configure option 2010-05-17 19:54:07 +01:00
squashfs_fs_i.h squashfs: add support for xattr reading 2010-05-17 19:54:06 +01:00
squashfs_fs_sb.h squashfs: add xattr id support 2010-05-17 19:54:05 +01:00
squashfs_fs.h Squashfs: fix checkpatch.pl warnings 2010-08-08 22:29:33 +00:00
squashfs.h Squashfs: fix filename typo 2010-08-05 23:52:53 +01:00
super.c BKL: Explicitly add BKL around get_sb/fill_super 2010-10-04 21:10:10 +02:00
symlink.c squashfs: add xattr support configure option 2010-05-17 19:54:07 +01:00
xattr_id.c squashfs: xattr_lookup sparse fix 2010-05-17 20:02:03 +01:00
xattr.c squashfs: fix filename in header comment 2010-05-31 18:50:22 +01:00
xattr.h Squashfs: Make XATTR config name consistent with other file systems 2010-05-31 18:46:29 +01:00
zlib_wrapper.c squashfs: fix locking bug in zlib wrapper 2010-04-23 02:54:54 +01:00