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author | Tejun Heo <htejun@gmail.com> | 2007-06-14 03:45:14 +0900 |
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committer | Greg Kroah-Hartman <gregkh@suse.de> | 2007-07-11 16:09:04 -0700 |
commit | 13b3086d2ea483cbcae5a4236446cecc082a72cf (patch) | |
tree | f6932aaf486a302aa7b03857d780bafda33db2d6 /fs/utimes.c | |
parent | a26cd7226c24c3be5dd5f48a74832fe64beb8489 (diff) | |
download | linux-13b3086d2ea483cbcae5a4236446cecc082a72cf.tar.gz |
sysfs: add sysfs_dirent->s_parent
Add sysfs_dirent->s_parent. With this patch, each sd points to and holds a reference to its parent. This allows walking sysfs tree without referencing sd->s_dentry which can go away anytime if the user doesn't control when it's deleted. sd->s_parent is initialized and parent is referenced in sysfs_attach_dirent(). Reference to parent is released when the sd is released, so as long as reference to a sd is held, s_parent can be followed. dentry walk in sysfs_readdir() is convereted to s_parent walk. This will be used to reimplement symlink such that it uses only sysfs_dirent tree. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'fs/utimes.c')
0 files changed, 0 insertions, 0 deletions