Messages in this thread Patch in this message | | | From | Greg Kroah-Hartman <> | Subject | [PATCH 18/27] sysfs: Update s_iattr on link and unlink. | Date | Fri, 11 Dec 2009 14:24:40 -0800 |
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From: Eric W. Biederman <ebiederm@xmission.com>
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> --- 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; -- 1.6.5.5
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