Revert "locks: keep a count of locks on the flctx lists"
This reverts commit 9bd0f45b7037fcfa8b575c7e27d0431d6e6dc3bb.
Linus rightly pointed out that I failed to initialize the counters
when adding them, so they don't work as expected. Just revert this
patch for now.
Reported-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Jeff Layton <jeff.layton@primarydata.com>
diff --git a/fs/cifs/file.c b/fs/cifs/file.c
index 8fe1f7a..a94b3e6 100644
--- a/fs/cifs/file.c
+++ b/fs/cifs/file.c
@@ -1129,7 +1129,7 @@
struct cifs_tcon *tcon = tlink_tcon(cfile->tlink);
struct file_lock *flock;
struct file_lock_context *flctx = inode->i_flctx;
- unsigned int i;
+ unsigned int count = 0, i;
int rc = 0, xid, type;
struct list_head locks_to_send, *el;
struct lock_to_push *lck, *tmp;
@@ -1140,14 +1140,20 @@
if (!flctx)
goto out;
+ spin_lock(&flctx->flc_lock);
+ list_for_each(el, &flctx->flc_posix) {
+ count++;
+ }
+ spin_unlock(&flctx->flc_lock);
+
INIT_LIST_HEAD(&locks_to_send);
/*
- * Allocating flc_posix_cnt locks is enough because no FL_POSIX locks
- * can be added to the list while we are holding cinode->lock_sem that
+ * Allocating count locks is enough because no FL_POSIX locks can be
+ * added to the list while we are holding cinode->lock_sem that
* protects locking operations of this inode.
*/
- for (i = 0; i < flctx->flc_posix_cnt; i++) {
+ for (i = 0; i < count; i++) {
lck = kmalloc(sizeof(struct lock_to_push), GFP_KERNEL);
if (!lck) {
rc = -ENOMEM;