From 2e0cdaa0288bbe3d6a05937bc7b61aa9da0cb2bf Mon Sep 17 00:00:00 2001 From: Filipe Manana Date: Mon, 19 Sep 2022 15:06:35 +0100 Subject: [PATCH] btrfs: remove unnecessary extent map initializations When allocating an extent map, we use kmem_cache_zalloc() which guarantees the returned memory is initialized to zeroes, therefore it's pointless to initialize the generation and flags of the extent map to zero again. Remove those initializations, as they are pointless and slightly increase the object text size. Before removing them: $ size fs/btrfs/extent_map.o text data bss dec hex filename 9241 274 24 9539 2543 fs/btrfs/extent_map.o After removing them: $ size fs/btrfs/extent_map.o text data bss dec hex filename 9209 274 24 9507 2523 fs/btrfs/extent_map.o Signed-off-by: Filipe Manana Reviewed-by: David Sterba Signed-off-by: David Sterba --- fs/btrfs/extent_map.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/fs/btrfs/extent_map.c b/fs/btrfs/extent_map.c index 2e6dc5a..6b7eee9 100644 --- a/fs/btrfs/extent_map.c +++ b/fs/btrfs/extent_map.c @@ -55,9 +55,7 @@ struct extent_map *alloc_extent_map(void) if (!em) return NULL; RB_CLEAR_NODE(&em->rb_node); - em->flags = 0; em->compress_type = BTRFS_COMPRESS_NONE; - em->generation = 0; refcount_set(&em->refs, 1); INIT_LIST_HEAD(&em->list); return em; -- 2.7.4