The sectorsize member of btrfs_block_group_cache is unused. So remove it, this
reduces the number of holes in the struct.
With patch:
/* size: 856, cachelines: 14, members: 40 */
/* sum members: 837, holes: 4, sum holes: 19 */
/* bit holes: 1, sum bit holes: 29 bits */
/* last cacheline: 24 bytes */
Without patch:
/* size: 864, cachelines: 14, members: 41 */
/* sum members: 841, holes: 5, sum holes: 23 */
/* bit holes: 1, sum bit holes: 29 bits */
/* last cacheline: 32 bytes */
Signed-off-by: Nikolay Borisov <nbori...@suse.com>
Reviewed-by: David Sterba <dste...@suse.com>
---
Changes since v2:
* Add SOB and Reviewed-by tags
Changes since v1:
* Missed the usage in btrfs-tests.c
fs/btrfs/ctree.h | 1 -
fs/btrfs/extent-tree.c | 1 -
fs/btrfs/tests/btrfs-tests.c | 1 -
3 files changed, 3 deletions(-)
diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h
index a75a23f9d68e..cdd3775e930b 100644
--- a/fs/btrfs/ctree.h
+++ b/fs/btrfs/ctree.h
@@ -559,7 +559,6 @@ struct btrfs_block_group_cache {
u64 bytes_super;
u64 flags;
u64 cache_generation;
- u32 sectorsize;
/*
* If the free space extent count exceeds this number, convert the block
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index a08a743a8e09..2a0d300c7d1a 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -9904,7 +9904,6 @@ btrfs_create_block_group_cache(struct btrfs_fs_info
*fs_info,
cache->key.offset = size;
cache->key.type = BTRFS_BLOCK_GROUP_ITEM_KEY;
- cache->sectorsize = fs_info->sectorsize;
cache->fs_info = fs_info;
cache->full_stripe_len = btrfs_full_stripe_len(fs_info,
&fs_info->mapping_tree,
diff --git a/fs/btrfs/tests/btrfs-tests.c b/fs/btrfs/tests/btrfs-tests.c
index b18ab8f327a5..d3f25376a0f8 100644
--- a/fs/btrfs/tests/btrfs-tests.c
+++ b/fs/btrfs/tests/btrfs-tests.c
@@ -211,7 +211,6 @@ btrfs_alloc_dummy_block_group(struct btrfs_fs_info *fs_info,
cache->key.objectid = 0;
cache->key.offset = length;
cache->key.type = BTRFS_BLOCK_GROUP_ITEM_KEY;
- cache->sectorsize = fs_info->sectorsize;
cache->full_stripe_len = fs_info->sectorsize;
cache->fs_info = fs_info;
--
2.7.4
--
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