sysfs: implement SYSFS_FLAG_REMOVED flag

Implement SYSFS_FLAG_REMOVED flag which currently is used only to
improve sanity check in sysfs_deactivate().  The flag will be used to
make directory entries reclamiable.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 1 insertions, 0 deletions

diff --git a/fs/sysfs/inode.c b/fs/sysfs/inode.c
index ee3a5d957051..e2f6ef138d20 100644
--- a/fs/sysfs/inode.c
+++ b/fs/sysfs/inode.c
@@ -296,6 +296,7 @@ int sysfs_hash_and_remove(struct dentry * dir, const char * name)
                 if (!sysfs_type(sd))
                         continue;
                 if (!strcmp(sd->s_name, name)) {
+                        sd->s_flags |= SYSFS_FLAG_REMOVED;
                         *pos = sd->s_sibling;
                         sd->s_sibling = NULL;
                         found = 1;