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| author | Eric W. Biederman <ebiederm@xmission.com> | 2009-11-20 16:08:51 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2009-12-11 11:24:53 -0800 |
| commit | 6b0bfe9383a54cf35046980c61f5ff8fefa557d7 (patch) | |
| tree | 3206ee6374ba6b735e97ce7af60ed8a48df0df9c | |
| parent | 35df63c46c8605d00140ec4833d2104e2e9f1acc (diff) | |
| download | kernel_samsung_smdk4412-6b0bfe9383a54cf35046980c61f5ff8fefa557d7.zip kernel_samsung_smdk4412-6b0bfe9383a54cf35046980c61f5ff8fefa557d7.tar.gz kernel_samsung_smdk4412-6b0bfe9383a54cf35046980c61f5ff8fefa557d7.tar.bz2 | |
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>
| -rw-r--r-- | fs/sysfs/dir.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/fs/sysfs/dir.c b/fs/sysfs/dir.c index 9ee130b..36ee6d8 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; |