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bcache: kill index() 

That was a terrible name for a macro, add some better helpers to replace it.

Signed-off-by: Kent Overstreet <kmo@daterainc.com>
This commit is contained in:
Kent Overstreet 2013-12-17 21:46:35 -08:00
parent 5c41c8a713
commit 88b9f8c426
4 changed files with 24 additions and 8 deletions
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4
drivers/md/bcache/bcache.h
View File

@ -736,10 +736,6 @@ static inline unsigned local_clock_us(void)
#define node(i, j) ((struct bkey *) ((i)->d + (j)))
#define end(i) node(i, (i)->keys)
#define index(i, b) \
((size_t) (((void *) i - (void *) (b)->sets[0].data) / \
block_bytes(b->c)))
#define btree_data_space(b) (PAGE_SIZE << (b)->page_order)
#define prios_per_bucket(c) \

6
drivers/md/bcache/btree.c
View File

@ -258,7 +258,7 @@ static void bch_btree_node_read_done(struct btree *b)
err = "corrupted btree";
for (i = write_block(b);
index(i, b) < btree_blocks(b);
bset_sector_offset(b, i) < KEY_SIZE(&b->key);
i = ((void *) i) + block_bytes(b->c))
if (i->seq == b->sets[0].data->seq)
goto err;
@ -278,9 +278,9 @@ out:
return;
err:
set_btree_node_io_error(b);
bch_cache_set_error(b->c, "%s at bucket %zu, block %zu, %u keys",
bch_cache_set_error(b->c, "%s at bucket %zu, block %u, %u keys",
err, PTR_BUCKET_NR(b->c, &b->key, 0),
index(i, b), i->keys);
bset_block_offset(b, i), i->keys);
goto out;
}

20
drivers/md/bcache/btree.h
View File

@ -185,6 +185,26 @@ static inline unsigned bset_offset(struct btree *b, struct bset *i)
return (((size_t) i) - ((size_t) b->sets->data)) >> 9;
}
static inline struct bset *btree_bset_first(struct btree *b)
{
return b->sets->data;
}
static inline unsigned bset_byte_offset(struct btree *b, struct bset *i)
{
return ((size_t) i) - ((size_t) b->sets->data);
}
static inline unsigned bset_sector_offset(struct btree *b, struct bset *i)
{
return (((void *) i) - ((void *) btree_bset_first(b))) >> 9;
}
static inline unsigned bset_block_offset(struct btree *b, struct bset *i)
{
return bset_sector_offset(b, i) >> b->c->block_bits;
}
static inline struct bset *write_block(struct btree *b)
{
return ((void *) b->sets[0].data) + b->written * block_bytes(b->c);

2
drivers/md/bcache/debug.c
View File

@ -88,7 +88,7 @@ static void dump_bset(struct btree *b, struct bset *i)
next = bkey_next(k);
bch_bkey_to_text(buf, sizeof(buf), k);
printk(KERN_ERR "block %zu key %zi/%u: %s", index(i, b),
printk(KERN_ERR "block %u key %zi/%u: %s", bset_block_offset(b, i),
(uint64_t *) k - i->d, i->keys, buf);
for (j = 0; j < KEY_PTRS(k); j++) {