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btrfs: use radix_tree_iter_retry() 

Even though this is a 'can't happen' situation, use the new
radix_tree_iter_retry() pattern to eliminate a goto.

[akpm@linux-foundation.org: fix btrfs build]
Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Konstantin Khlebnikov <khlebnikov@openvz.org>
Cc: Chris Mason <clm@fb.com>
Cc: Josef Bacik <jbacik@fb.com>
Cc: David Sterba <dsterba@suse.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Matthew Wilcox 2016-03-17 14:22:00 -07:00 committed by Linus Torvalds
parent 7cf19af4de
commit c28f242063
1 changed files with 1 additions and 2 deletions
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3
fs/btrfs/tests/btrfs-tests.c
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@ -137,7 +137,6 @@ static void btrfs_free_dummy_fs_info(struct btrfs_fs_info *fs_info)
void **slot;
spin_lock(&fs_info->buffer_lock);
restart:
radix_tree_for_each_slot(slot, &fs_info->buffer_radix, &iter, 0) {
struct extent_buffer *eb;
@ -147,7 +146,7 @@ restart:
/* Shouldn't happen but that kind of thinking creates CVE's */
if (radix_tree_exception(eb)) {
if (radix_tree_deref_retry(eb))
goto restart;
slot = radix_tree_iter_retry(&iter);
continue;
}
spin_unlock(&fs_info->buffer_lock);