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sysfs: clean up sysfs_get_dirent()

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The pre-existing sysfs interfaces which take explicit namespace
argument are weird in that they place the optional @ns in front of
@name which is contrary to the established convention.  For example,
we end up forcing vast majority of sysfs_get_dirent() users to do
sysfs_get_dirent(parent, NULL, name), which is silly and error-prone
especially as @ns and @name may be interchanged without causing
compilation warning.

This renames sysfs_get_dirent() to sysfs_get_dirent_ns() and swap the
positions of @name and @ns, and sysfs_get_dirent() is now a wrapper
around sysfs_get_dirent_ns().  This makes confusions a lot less
likely.

There are other interfaces which take @ns before @name.  They'll be
updated by following patches.

This patch doesn't introduce any functional changes.

v2: EXPORT_SYMBOL_GPL() wasn't updated leading to undefined symbol
    error on module builds.  Reported by build test robot.  Fixed.

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Eric W. Biederman <ebiederm@xmission.com>
Cc: Kay Sievers <kay@vrfy.org>
Cc: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Tejun Heo
2013-09-11 23:19:13 -04:00
committed by Greg Kroah-Hartman
parent cb26a31157
commit 388975ccca
10 changed files with 31 additions and 28 deletions
Download Patch File Download Diff File Expand all files Collapse all files

10
fs/sysfs/group.c
View File

@@ -207,7 +207,7 @@ void sysfs_remove_group(struct kobject *kobj,
struct sysfs_dirent *sd;
if (grp->name) {
sd = sysfs_get_dirent(dir_sd, NULL, grp->name);
sd = sysfs_get_dirent(dir_sd, grp->name);
if (!sd) {
WARN(!sd, KERN_WARNING
"sysfs group %p not found for kobject '%s'\n",
@@ -262,7 +262,7 @@ int sysfs_merge_group(struct kobject *kobj,
struct attribute *const *attr;
int i;
dir_sd = sysfs_get_dirent(kobj->sd, NULL, grp->name);
dir_sd = sysfs_get_dirent(kobj->sd, grp->name);
if (!dir_sd)
return -ENOENT;
@@ -289,7 +289,7 @@ void sysfs_unmerge_group(struct kobject *kobj,
struct sysfs_dirent *dir_sd;
struct attribute *const *attr;
dir_sd = sysfs_get_dirent(kobj->sd, NULL, grp->name);
dir_sd = sysfs_get_dirent(kobj->sd, grp->name);
if (dir_sd) {
for (attr = grp->attrs; *attr; ++attr)
sysfs_hash_and_remove(dir_sd, NULL, (*attr)->name);
@@ -311,7 +311,7 @@ int sysfs_add_link_to_group(struct kobject *kobj, const char *group_name,
struct sysfs_dirent *dir_sd;
int error = 0;
dir_sd = sysfs_get_dirent(kobj->sd, NULL, group_name);
dir_sd = sysfs_get_dirent(kobj->sd, group_name);
if (!dir_sd)
return -ENOENT;
@@ -333,7 +333,7 @@ void sysfs_remove_link_from_group(struct kobject *kobj, const char *group_name,
{
struct sysfs_dirent *dir_sd;
dir_sd = sysfs_get_dirent(kobj->sd, NULL, group_name);
dir_sd = sysfs_get_dirent(kobj->sd, group_name);
if (dir_sd) {
sysfs_hash_and_remove(dir_sd, NULL, link_name);
sysfs_put(dir_sd);