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sysfs, kernfs: introduce sysfs_root_sd

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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 <tj@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Tejun Heo
2013-11-28 14:54:39 -05:00
committed by Greg Kroah-Hartman
parent 9e30cc9595
commit 061447a496
4 changed files with 11 additions and 9 deletions
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2
fs/sysfs/sysfs.h
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@@ -28,7 +28,7 @@ struct sysfs_super_info {
const void *ns;
};
#define sysfs_info(SB) ((struct sysfs_super_info *)(SB->s_fs_info))
extern struct sysfs_dirent sysfs_root;
extern struct sysfs_dirent *sysfs_root_sd;
extern struct kmem_cache *sysfs_dir_cachep;
/*