From: Tejun Heo <htejun@gmail.com>
To: ebiederm@xmission.com, cornelia.huck@de.ibm.com, greg@kroah.com,
stern@rowland.harvard.edu, kay.sievers@vrfy.org,
linux-kernel@vger.kernel.org, htejun@gmail.com
Cc: Tejun Heo <htejun@gmail.com>
Subject: [PATCH 03/15] sysfs: fix sysfs_chmod_file() such that it updates sd->s_mode too
Date: Thu, 20 Sep 2007 16:05:10 +0900 [thread overview]
Message-ID: <11902719102786-git-send-email-htejun@gmail.com> (raw)
In-Reply-To: <11902719091692-git-send-email-htejun@gmail.com>
sysfs_chmod_file() looked and updated only inode of the target file.
Dentry and inode are reclaimable and the update mode data will go away
when the inode is reclaimed. This patch makes sysfs_chmod_file()
update sd->s_mode too such that the change is permanent.
Signed-off-by: Tejun Heo <htejun@gmail.com>
---
fs/sysfs/file.c | 9 +++++++++
1 files changed, 9 insertions(+), 0 deletions(-)
diff --git a/fs/sysfs/file.c b/fs/sysfs/file.c
index ff93c92..9fdf8da 100644
--- a/fs/sysfs/file.c
+++ b/fs/sysfs/file.c
@@ -521,10 +521,19 @@ int sysfs_chmod_file(struct kobject *kobj, struct attribute *attr, mode_t mode)
}
inode = victim->d_inode;
+
mutex_lock(&inode->i_mutex);
+
newattrs.ia_mode = (mode & S_IALLUGO) | (inode->i_mode & ~S_IALLUGO);
newattrs.ia_valid = ATTR_MODE | ATTR_CTIME;
rc = notify_change(victim, &newattrs);
+
+ if (rc == 0) {
+ mutex_lock(&sysfs_mutex);
+ victim_sd->s_mode = newattrs.ia_mode;
+ mutex_unlock(&sysfs_mutex);
+ }
+
mutex_unlock(&inode->i_mutex);
out:
dput(victim);
--
1.5.0.3
next prev parent reply other threads:[~2007-09-20 7:05 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-09-20 7:05 [PATCHSET 1/4] sysfs: misc updates Tejun Heo
2007-09-20 7:05 ` [PATCH 02/15] sysfs: fix comments of sysfs_add/remove_one() Tejun Heo
2007-09-20 7:05 ` [PATCH 01/15] sysfs: kill SYSFS_FLAG_REMOVED Tejun Heo
2007-09-25 21:32 ` Greg KH
2007-09-20 7:05 ` [PATCH 04/15] sysfs: clean up header files Tejun Heo
2007-09-20 7:05 ` Tejun Heo [this message]
2007-09-20 7:05 ` [PATCH 09/15] sysfs: make bin attr open get active reference of parent too Tejun Heo
2007-09-20 7:05 ` [PATCH 08/15] sysfs: kill unnecessary NULL pointer check in sysfs_release() Tejun Heo
2007-09-20 7:05 ` [PATCH 05/15] sysfs: kill sysfs_update_file() Tejun Heo
2007-09-20 7:05 ` [PATCH 07/15] sysfs: kill unnecessary sysfs_get() in open paths Tejun Heo
2007-09-20 7:05 ` [PATCH 06/15] sysfs: reposition sysfs_dirent->s_mode Tejun Heo
2007-09-20 7:05 ` [PATCH 11/15] sysfs: open code sysfs_attach_dentry() Tejun Heo
2007-09-20 7:05 ` [PATCH 10/15] sysfs: make s_elem an anonymous union Tejun Heo
2007-09-20 7:05 ` [PATCH 12/15] sysfs: make sysfs_root a regular directory dirent Tejun Heo
2007-09-20 7:05 ` [PATCH 14/15] sysfs: implement sysfs_open_dirent Tejun Heo
2007-09-20 7:05 ` [PATCH 13/15] sysfs: move sysfs_dirent->s_children into sysfs_dirent->s_dir Tejun Heo
2007-09-20 7:05 ` [PATCH 15/15] sysfs: move sysfs file poll implementation to sysfs_open_dirent Tejun Heo
2007-09-26 11:04 ` [PATCHSET 1/4] sysfs: misc updates Cornelia Huck
2007-09-26 15:19 ` Greg KH
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