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authorTejun Heo <tj@kernel.org>2014-01-10 17:57:24 +0400
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2014-01-11 01:48:08 +0400
commit99177a34110889a8f2c36420c34e3bcc9bfd8a70 (patch)
tree53aa8ccc23e3bd92192a8d0518aa4f5f84a634d9 /fs/kernfs/file.c
parentf601f9a2bf7dc1f7ee18feece4c4e2fc6845d6c4 (diff)
downloadlinux-99177a34110889a8f2c36420c34e3bcc9bfd8a70.tar.xz
kernfs: remove kernfs_addrm_cxt
kernfs_addrm_cxt and the accompanying kernfs_addrm_start/finish() were added because there were operations which should be performed outside kernfs_mutex after adding and removing kernfs_nodes. The necessary operations were recorded in kernfs_addrm_cxt and performed by kernfs_addrm_finish(); however, after the recent changes which relocated deactivation and unmapping so that they're performed directly during removal, the only operation kernfs_addrm_finish() performs is kernfs_put(), which can be moved inside the removal path too. This patch moves the kernfs_put() of the base ref to __kernfs_remove() and remove kernfs_addrm_cxt and kernfs_addrm_start/finish(). * kernfs_add_one() is updated to grab and release the parent's active ref and kernfs_mutex itself. kernfs_get/put_active() and kernfs_addrm_start/finish() invocations around it are removed from all users. * __kernfs_remove() puts an unlinked node directly instead of chaining it to kernfs_addrm_cxt. Its callers are updated to grab and release kernfs_mutex instead of calling kernfs_addrm_start/finish() around it. v2: Updated to fit the v2 restructuring of removal path. Signed-off-by: Tejun Heo <tj@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'fs/kernfs/file.c')
-rw-r--r--fs/kernfs/file.c10
1 files changed, 1 insertions, 9 deletions
diff --git a/fs/kernfs/file.c b/fs/kernfs/file.c
index 404ffd2f27bc..ffe1bebf9197 100644
--- a/fs/kernfs/file.c
+++ b/fs/kernfs/file.c
@@ -817,7 +817,6 @@ struct kernfs_node *__kernfs_create_file(struct kernfs_node *parent,
bool name_is_static,
struct lock_class_key *key)
{
- struct kernfs_addrm_cxt acxt;
struct kernfs_node *kn;
unsigned flags;
int rc;
@@ -853,14 +852,7 @@ struct kernfs_node *__kernfs_create_file(struct kernfs_node *parent,
if (ops->mmap)
kn->flags |= KERNFS_HAS_MMAP;
- rc = -ENOENT;
- if (kernfs_get_active(parent)) {
- kernfs_addrm_start(&acxt);
- rc = kernfs_add_one(&acxt, kn, parent);
- kernfs_addrm_finish(&acxt);
- kernfs_put_active(parent);
- }
-
+ rc = kernfs_add_one(kn, parent);
if (rc) {
kernfs_put(kn);
return ERR_PTR(rc);