From cc2c39d605d23e7f1fbc376bf011fd06e46ee79f Mon Sep 17 00:00:00 2001 From: Johannes Thumshirn Date: Wed, 28 Nov 2018 09:54:54 +0100 Subject: [PATCH] btrfs: don't initialize 'offset' in map_private_extent_buffer() In map_private_extent_buffer() the 'offset' variable is initialized to a page aligned version of the 'start' parameter. But later on it is overwritten with either the offset from the extent buffer's start or 0. So get rid of the initial initialization. Reviewed-by: Nikolay Borisov Signed-off-by: Johannes Thumshirn Signed-off-by: David Sterba --- fs/btrfs/extent_io.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c index 582b4b1c41e0..7aafdec49dc3 100644 --- a/fs/btrfs/extent_io.c +++ b/fs/btrfs/extent_io.c @@ -5380,7 +5380,7 @@ int map_private_extent_buffer(const struct extent_buffer *eb, char **map, unsigned long *map_start, unsigned long *map_len) { - size_t offset = start & (PAGE_SIZE - 1); + size_t offset; char *kaddr; struct page *p; size_t start_offset = eb->start & ((u64)PAGE_SIZE - 1);