From: Jeff Layton <jlayton@xxxxxxxxxxxxxxx>
...that we can use to queue file_locks to per-ctx list_heads. Go ahead
and convert locks_delete_lock and locks_dispose_list to use it instead
of the fl_block list.
Signed-off-by: Jeff Layton <jlayton@xxxxxxxxxxxxxxx>
Acked-by: Christoph Hellwig <hch@xxxxxx>
---
fs/locks.c | 8 +++++---
include/linux/fs.h | 1 +
2 files changed, 6 insertions(+), 3 deletions(-)
diff --git a/fs/locks.c b/fs/locks.c
index 59e2f905e4ff..bfe5f17401de 100644
--- a/fs/locks.c
+++ b/fs/locks.c
@@ -207,6 +207,7 @@ static struct kmem_cache *filelock_cache __read_mostly;
static void locks_init_lock_heads(struct file_lock *fl)
{
INIT_HLIST_NODE(&fl->fl_link);
+ INIT_LIST_HEAD(&fl->fl_list);
INIT_LIST_HEAD(&fl->fl_block);
init_waitqueue_head(&fl->fl_wait);
}
@@ -243,6 +244,7 @@ EXPORT_SYMBOL_GPL(locks_release_private);
void locks_free_lock(struct file_lock *fl)
{
BUG_ON(waitqueue_active(&fl->fl_wait));
+ BUG_ON(!list_empty(&fl->fl_list));
BUG_ON(!list_empty(&fl->fl_block));
BUG_ON(!hlist_unhashed(&fl->fl_link));
@@ -257,8 +259,8 @@ locks_dispose_list(struct list_head *dispose)
struct file_lock *fl;
while (!list_empty(dispose)) {
- fl = list_first_entry(dispose, struct file_lock, fl_block);
- list_del_init(&fl->fl_block);
+ fl = list_first_entry(dispose, struct file_lock, fl_list);
+ list_del_init(&fl->fl_list);
locks_free_lock(fl);
}
}
@@ -691,7 +693,7 @@ static void locks_delete_lock(struct file_lock **thisfl_p,
locks_unlink_lock(thisfl_p);
if (dispose)
- list_add(&fl->fl_block, dispose);
+ list_add(&fl->fl_list, dispose);
else
locks_free_lock(fl);
}
diff --git a/include/linux/fs.h b/include/linux/fs.h
index 42efe13077b6..cd6818115162 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -934,6 +934,7 @@ int locks_in_grace(struct net *);
*/
struct file_lock {
struct file_lock *fl_next; /* singly linked list for this inode */
+ struct list_head fl_list; /* link into file_lock_context */
struct hlist_node fl_link; /* node in global lists */
struct list_head fl_block; /* circular list of blocked processes */
fl_owner_t fl_owner;
--
2.1.0
--
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