linux.git/fs/sysfs/sysfs.h, branch v4.8

kernfs: s/sysfs_dirent/kernfs_node/ and rename its friends accordingly

2013-12-11T23:28:36+00:00

kernfs has just been separated out from sysfs and we're already in
full conflict mode.  Nothing can make the situation any worse.  Let's
take the chance to name things properly.

This patch performs the following renames.

* s/sysfs_elem_dir/kernfs_elem_dir/
* s/sysfs_elem_symlink/kernfs_elem_symlink/
* s/sysfs_elem_attr/kernfs_elem_file/
* s/sysfs_dirent/kernfs_node/
* s/sd/kn/ in kernfs proper
* s/parent_sd/parent/
* s/target_sd/target/
* s/dir_sd/parent/
* s/to_sysfs_dirent()/rb_to_kn()/
* misc renames of local vars when they conflict with the above

Because md, mic and gpio dig into sysfs details, this patch ends up
modifying them.  All are sysfs_dirent renames and trivial.  While we
can avoid these by introducing a dummy wrapping struct sysfs_dirent
around kernfs_node, given the limited usage outside kernfs and sysfs
proper, I don't think such workaround is called for.

This patch is strictly rename only and doesn't introduce any
functional difference.

- mic / gpio renames were missing.  Spotted by kbuild test robot.

Signed-off-by: Tejun Heo 
Cc: Neil Brown 
Cc: Linus Walleij 
Cc: Ashutosh Dixit 
Cc: kbuild test robot 
Signed-off-by: Greg Kroah-Hartman

sysfs, kernfs: remove cross inclusions of internal headers

2013-11-30T02:54:50+00:00

fs/kernfs/kernfs-internal.h needed to include fs/sysfs/sysfs.h because
part of kernfs core implementation was living in sysfs.

fs/sysfs/sysfs.h needed to include fs/kernfs/kernfs-internal.h because
include/linux/kernfs.h didn't expose enough interface.

The separation is complete and neither is true anymore.  Remove the
cross inclusion and make sysfs a proper user of kernfs.

Signed-off-by: Tejun Heo 
Signed-off-by: Greg Kroah-Hartman

sysfs, kernfs: move mount core code to fs/kernfs/mount.c

2013-11-30T02:16:08+00:00

Move core mount code to fs/kernfs/mount.c.  The respective
declarations in fs/sysfs/sysfs.h are moved to
fs/kernfs/kernfs-internal.h.

This is pure relocation.

Signed-off-by: Tejun Heo 
Signed-off-by: Greg Kroah-Hartman

sysfs, kernfs: make super_blocks bind to different kernfs_roots

2013-11-30T02:10:48+00:00

kernfs is being updated to allow multiple sysfs_dirent hierarchies so
that it can also be used by other users.  Currently, sysfs
super_blocks are always attached to one kernfs_root - sysfs_root - and
distinguished only by their namespace tags.

This patch adds sysfs_super_info->root and update
sysfs_fill/test_super() so that super_blocks are identified by the
combination of both the associated kernfs_root and namespace tag.
This allows mounting different kernfs hierarchies.

Signed-off-by: Tejun Heo 
Signed-off-by: Greg Kroah-Hartman

sysfs, kernfs: introduce sysfs_root_sd

2013-11-30T02:09:27+00:00

Currently, it's assumed that there's a single kernfs hierarchy in the
system anchored at sysfs_root which is defined as a global struct.  To
allow other users of kernfs, this will be made dynamic.  Introduce a
new global variable sysfs_root_sd which points to &sysfs_root and
convert all &sysfs_root users.

This patch doesn't introduce any behavior difference.

Signed-off-by: Tejun Heo 
Signed-off-by: Greg Kroah-Hartman

sysfs, kernfs: make sysfs_super_info->ns const

2013-11-30T02:09:27+00:00

Add const qualifier to sysfs_super_info->ns so that it's consistent
with other namespace tag usages in sysfs.  Because kobject doesn't use
const qualifier for namespace tags, this ends up requiring an explicit
cast to drop const qualifier in free_sysfs_super_info().

Signed-off-by: Tejun Heo 
Signed-off-by: Greg Kroah-Hartman

sysfs, kernfs: move symlink core code to fs/kernfs/symlink.c

2013-11-30T02:08:39+00:00

Move core symlink code to fs/kernfs/symlink.c.  fs/sysfs/symlink.c now
only contains sysfs wrappers around kernfs interfaces.  The respective
declarations in fs/sysfs/sysfs.h are moved to
fs/kernfs/kernfs-internal.h.

This is pure relocation.

Signed-off-by: Tejun Heo 
Signed-off-by: Greg Kroah-Hartman

sysfs, kernfs: move file core code to fs/kernfs/file.c

2013-11-30T02:08:39+00:00

Move core file code to fs/kernfs/file.c.  fs/sysfs/file.c now contains
sysfs kernfs_ops callbacks, sysfs wrappers around kernfs interfaces,
and sysfs_schedule_callback().  The respective declarations in
fs/sysfs/sysfs.h are moved to fs/kernfs/kernfs-internal.h.

This is pure relocation.

v2: Refreshed on top of the v2 of "sysfs, kernfs: prepare read path
    for kernfs".

v3: Refreshed on top of the v3 of "sysfs, kernfs: prepare read path
    for kernfs".

Signed-off-by: Tejun Heo 
Signed-off-by: Greg Kroah-Hartman

sysfs, kernfs: move dir core code to fs/kernfs/dir.c

2013-11-30T02:08:39+00:00

Move core dir code to fs/kernfs/dir.c.  fs/sysfs/dir.c now only
contains sysfs_warn_dup() and sysfs wrappers around kernfs interfaces.
The respective declarations in fs/sysfs/sysfs.h are moved to
fs/kernfs/kernfs-internal.h.

This is pure relocation.

v2: sysfs_symlink_target_lock was mistakenly relocated to kernfs.  It
    should remain with sysfs.  Fixed.

Signed-off-by: Tejun Heo 
Signed-off-by: Greg Kroah-Hartman

sysfs, kernfs: move inode code to fs/kernfs/inode.c

2013-11-30T01:55:10+00:00

There's nothing sysfs-specific in fs/sysfs/inode.c.  Move everything
in it to fs/kernfs/inode.c.  The respective declarations in
fs/sysfs/sysfs.h are moved to fs/kernfs/kernfs-internal.h.

This is pure relocation.

Signed-off-by: Tejun Heo 
Signed-off-by: Greg Kroah-Hartman