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authorEric W. Biederman <ebiederm@xmission.com>2009-11-20 16:08:51 -0800
committerGreg Kroah-Hartman <gregkh@suse.de>2009-12-11 11:24:53 -0800
commit6b0bfe9383a54cf35046980c61f5ff8fefa557d7 (patch)
tree3206ee6374ba6b735e97ce7af60ed8a48df0df9c /fs/sysfs/dir.c
parent35df63c46c8605d00140ec4833d2104e2e9f1acc (diff)
sysfs: Update s_iattr on link and unlink.
Currently sysfs updates the timestamps on the vfs directory inode when we create or remove a directory entry but doesn't update the cached copy on the sysfs_dirent, fix that oversight. Acked-by: Tejun Heo <tj@kernel.org> Acked-by: Serge Hallyn <serue@us.ibm.com> Signed-off-by: Eric W. Biederman <ebiederm@aristanetworks.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'fs/sysfs/dir.c')
-rw-r--r--fs/sysfs/dir.c18
1 files changed, 18 insertions, 0 deletions
diff --git a/fs/sysfs/dir.c b/fs/sysfs/dir.c
index 9ee130be03b..36ee6d81795 100644
--- a/fs/sysfs/dir.c
+++ b/fs/sysfs/dir.c
@@ -464,6 +464,8 @@ void sysfs_addrm_start(struct sysfs_addrm_cxt *acxt,
*/
int __sysfs_add_one(struct sysfs_addrm_cxt *acxt, struct sysfs_dirent *sd)
{
+ struct sysfs_inode_attrs *ps_iattr;
+
if (sysfs_find_dirent(acxt->parent_sd, sd->s_name))
return -EEXIST;
@@ -476,6 +478,13 @@ int __sysfs_add_one(struct sysfs_addrm_cxt *acxt, struct sysfs_dirent *sd)
sysfs_link_sibling(sd);
+ /* Update timestamps on the parent */
+ ps_iattr = acxt->parent_sd->s_iattr;
+ if (ps_iattr) {
+ struct iattr *ps_iattrs = &ps_iattr->ia_iattr;
+ ps_iattrs->ia_ctime = ps_iattrs->ia_mtime = CURRENT_TIME;
+ }
+
return 0;
}
@@ -554,10 +563,19 @@ int sysfs_add_one(struct sysfs_addrm_cxt *acxt, struct sysfs_dirent *sd)
*/
void sysfs_remove_one(struct sysfs_addrm_cxt *acxt, struct sysfs_dirent *sd)
{
+ struct sysfs_inode_attrs *ps_iattr;
+
BUG_ON(sd->s_flags & SYSFS_FLAG_REMOVED);
sysfs_unlink_sibling(sd);
+ /* Update timestamps on the parent */
+ ps_iattr = acxt->parent_sd->s_iattr;
+ if (ps_iattr) {
+ struct iattr *ps_iattrs = &ps_iattr->ia_iattr;
+ ps_iattrs->ia_ctime = ps_iattrs->ia_mtime = CURRENT_TIME;
+ }
+
sd->s_flags |= SYSFS_FLAG_REMOVED;
sd->s_sibling = acxt->removed;
acxt->removed = sd;