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btrfs-progs: check: reduce size of extent_record

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There are just 3 values of flag_block_full_backref, we can utilize a
bitfield and save 8 bytes (192 now).

Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
David Sterba 2016-04-01 17:08:51 +02:00
parent 427643f069
commit 5b1bbc8924
1 changed files with 7 additions and 4 deletions
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11
cmds-check.c
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@ -122,6 +122,9 @@ struct tree_backref {
};
};
/* Explicit initialization for extent_record::flag_block_full_backref */
enum { FLAG_UNSET = 2 };
struct extent_record {
struct list_head backrefs;
struct list_head dups;
@ -138,7 +141,7 @@ struct extent_record {
u64 info_objectid;
u32 num_duplicates;
u8 info_level;
int flag_block_full_backref;
unsigned int flag_block_full_backref:2;
unsigned int found_rec:1;
unsigned int content_checked:1;
unsigned int owner_ref_checked:1;
@ -4531,7 +4534,7 @@ static int add_extent_rec_nolookup(struct cache_tree *extent_cache,
rec->owner_ref_checked = tmpl->owner_ref_checked;
rec->num_duplicates = 0;
rec->metadata = tmpl->metadata;
rec->flag_block_full_backref = -1;
rec->flag_block_full_backref = FLAG_UNSET;
rec->bad_full_backref = 0;
rec->crossing_stripes = 0;
rec->wrong_chunk_type = 0;
@ -5931,13 +5934,13 @@ static int calc_extent_flag(struct btrfs_root *root,
goto full_backref;
normal:
*flags = 0;
if (rec->flag_block_full_backref != -1 &&
if (rec->flag_block_full_backref != FLAG_UNSET &&
rec->flag_block_full_backref != 0)
rec->bad_full_backref = 1;
return 0;
full_backref:
*flags |= BTRFS_BLOCK_FLAG_FULL_BACKREF;
if (rec->flag_block_full_backref != -1 &&
if (rec->flag_block_full_backref != FLAG_UNSET &&
rec->flag_block_full_backref != 1)
rec->bad_full_backref = 1;
return 0;