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Subject[PATCH 07/20] sysfs: Simplify sysfs_chmod_file semantics
Date
From: Eric W. Biederman <ebiederm@xmission.com>

Currently every caller of sysfs_chmod_file happens at either
file creation time to set a non-default mode or in response
to a specific user requested space change in policy. Making
timestamps of when the chmod happens and notification of
a file changing mode uninteresting.

Remove the unnecessary time stamp and filesystem change
notification, and removes the last of the explicit inotify
and donitfy support from sysfs.

Signed-off-by: Eric W. Biederman <ebiederm@aristanetworks.com>
---
fs/sysfs/file.c | 10 +---------
1 files changed, 1 insertions(+), 9 deletions(-)
diff --git a/fs/sysfs/file.c b/fs/sysfs/file.c
index b1606e0..0786b41 100644
--- a/fs/sysfs/file.c
+++ b/fs/sysfs/file.c
@@ -602,17 +602,9 @@ int sysfs_chmod_file(struct kobject *kobj, struct attribute *attr, mode_t mode)
mutex_lock(&inode->i_mutex);

newattrs.ia_mode = (mode & S_IALLUGO) | (inode->i_mode & ~S_IALLUGO);
- newattrs.ia_valid = ATTR_MODE | ATTR_CTIME;
- newattrs.ia_ctime = current_fs_time(inode->i_sb);
+ newattrs.ia_valid = ATTR_MODE;
rc = sysfs_setattr(victim, &newattrs);

- if (rc == 0) {
- fsnotify_change(victim, newattrs.ia_valid);
- mutex_lock(&sysfs_mutex);
- victim_sd->s_mode = newattrs.ia_mode;
- mutex_unlock(&sysfs_mutex);
- }
-
mutex_unlock(&inode->i_mutex);
out:
dput(victim);
--
1.6.1.2.350.g88cc


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