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authorFilipe Manana <fdmanana@suse.com>2022-09-19 17:06:35 +0300
committerDavid Sterba <dsterba@suse.com>2022-09-29 18:08:30 +0300
commit2e0cdaa0288bbe3d6a05937bc7b61aa9da0cb2bf (patch)
tree9747cea97640d4c0141a58d9f1dae37efe5521ad /fs/btrfs
parentad5d6e9148b6774625149dc4dece0e54f3e7f7c9 (diff)
downloadlinux-2e0cdaa0288bbe3d6a05937bc7b61aa9da0cb2bf.tar.xz
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 <fdmanana@suse.com> Reviewed-by: David Sterba <dsterba@suse.com> Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'fs/btrfs')
-rw-r--r--fs/btrfs/extent_map.c2
1 files changed, 0 insertions, 2 deletions
diff --git a/fs/btrfs/extent_map.c b/fs/btrfs/extent_map.c
index 2e6dc5a772f4..6b7eee92d981 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;