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bcache: Bkey indexing renaming 

More refactoring:

node() -> bset_bkey_idx()
end() -> bset_bkey_last()

Signed-off-by: Kent Overstreet <kmo@daterainc.com>
This commit is contained in:
Kent Overstreet 2013-12-17 21:56:21 -08:00
parent 085d2a3dd4
commit fafff81cea
7 changed files with 63 additions and 53 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

11
drivers/md/bcache/bcache.h
View File

@ -724,9 +724,6 @@ struct bbio {
#define __set_blocks(i, k, c) DIV_ROUND_UP(__set_bytes(i, k), block_bytes(c))
#define set_blocks(i, c) __set_blocks(i, (i)->keys, c)
#define node(i, j) ((struct bkey *) ((i)->d + (j)))
#define end(i) node(i, (i)->keys)
#define btree_data_space(b) (PAGE_SIZE << (b)->page_order)
#define prios_per_bucket(c) \
@ -791,18 +788,14 @@ static inline bool ptr_available(struct cache_set *c, const struct bkey *k,
/* Btree key macros */
static inline void bkey_init(struct bkey *k)
{
*k = ZERO_KEY;
}
/*
* This is used for various on disk data structures - cache_sb, prio_set, bset,
* jset: The checksum is _always_ the first 8 bytes of these structs
*/
#define csum_set(i) \
bch_crc64(((void *) (i)) + sizeof(uint64_t), \
((void *) end(i)) - (((void *) (i)) + sizeof(uint64_t)))
((void *) bset_bkey_last(i)) - \
(((void *) (i)) + sizeof(uint64_t)))
/* Error handling macros */

28
drivers/md/bcache/bset.c
View File

@ -500,7 +500,7 @@ static void make_bfloat(struct bset_tree *t, unsigned j)
: tree_to_prev_bkey(t, j >> ffs(j));
struct bkey *r = is_power_of_2(j + 1)
? node(t->data, t->data->keys - bkey_u64s(&t->end))
? bset_bkey_idx(t->data, t->data->keys - bkey_u64s(&t->end))
: tree_to_bkey(t, j >> (ffz(j) + 1));
BUG_ON(m < l || m > r);
@ -559,7 +559,7 @@ static void bset_build_written_tree(struct btree *b)
bset_alloc_tree(b, t);
t->size = min_t(unsigned,
bkey_to_cacheline(t, end(t->data)),
bkey_to_cacheline(t, bset_bkey_last(t->data)),
b->sets->tree + bset_tree_space(b) - t->tree);
if (t->size < 2) {
@ -582,7 +582,7 @@ static void bset_build_written_tree(struct btree *b)
t->tree[j].m = bkey_to_cacheline_offset(k);
}
while (bkey_next(k) != end(t->data))
while (bkey_next(k) != bset_bkey_last(t->data))
k = bkey_next(k);
t->end = *k;
@ -600,7 +600,7 @@ void bch_bset_fix_invalidated_key(struct btree *b, struct bkey *k)
unsigned inorder, j = 1;
for (t = b->sets; t <= &b->sets[b->nsets]; t++)
if (k < end(t->data))
if (k < bset_bkey_last(t->data))
goto found_set;
BUG();
@ -613,7 +613,7 @@ found_set:
if (k == t->data->start)
goto fix_left;
if (bkey_next(k) == end(t->data)) {
if (bkey_next(k) == bset_bkey_last(t->data)) {
t->end = *k;
goto fix_right;
}
@ -679,7 +679,7 @@ void bch_bset_fix_lookup_table(struct btree *b, struct bkey *k)
/* Possibly add a new entry to the end of the lookup table */
for (k = table_to_bkey(t, t->size - 1);
k != end(t->data);
k != bset_bkey_last(t->data);
k = bkey_next(k))
if (t->size == bkey_to_cacheline(t, k)) {
t->prev[t->size] = bkey_to_cacheline_offset(k);
@ -715,7 +715,7 @@ static struct bset_search_iter bset_search_write_set(struct btree *b,
unsigned li = 0, ri = t->size;
BUG_ON(!b->nsets &&
t->size < bkey_to_cacheline(t, end(t->data)));
t->size < bkey_to_cacheline(t, bset_bkey_last(t->data)));
while (li + 1 != ri) {
unsigned m = (li + ri) >> 1;
@ -728,7 +728,7 @@ static struct bset_search_iter bset_search_write_set(struct btree *b,
return (struct bset_search_iter) {
table_to_bkey(t, li),
ri < t->size ? table_to_bkey(t, ri) : end(t->data)
ri < t->size ? table_to_bkey(t, ri) : bset_bkey_last(t->data)
};
}
@ -780,7 +780,7 @@ static struct bset_search_iter bset_search_tree(struct btree *b,
f = &t->tree[inorder_next(j, t->size)];
r = cacheline_to_bkey(t, inorder, f->m);
} else
r = end(t->data);
r = bset_bkey_last(t->data);
} else {
r = cacheline_to_bkey(t, inorder, f->m);
@ -816,7 +816,7 @@ struct bkey *__bch_bset_search(struct btree *b, struct bset_tree *t,
if (unlikely(!t->size)) {
i.l = t->data->start;
i.r = end(t->data);
i.r = bset_bkey_last(t->data);
} else if (bset_written(b, t)) {
/*
* Each node in the auxiliary search tree covers a certain range
@ -826,7 +826,7 @@ struct bkey *__bch_bset_search(struct btree *b, struct bset_tree *t,
*/
if (unlikely(bkey_cmp(search, &t->end) >= 0))
return end(t->data);
return bset_bkey_last(t->data);
if (unlikely(bkey_cmp(search, t->data->start) < 0))
return t->data->start;
@ -842,7 +842,7 @@ struct bkey *__bch_bset_search(struct btree *b, struct bset_tree *t,
inorder_to_tree(bkey_to_cacheline(t, i.l), t)),
search) > 0);
BUG_ON(i.r != end(t->data) &&
BUG_ON(i.r != bset_bkey_last(t->data) &&
bkey_cmp(i.r, search) <= 0);
}
@ -897,7 +897,7 @@ struct bkey *__bch_btree_iter_init(struct btree *b, struct btree_iter *iter,
for (; start <= &b->sets[b->nsets]; start++) {
ret = bch_bset_search(b, start, search);
bch_btree_iter_push(iter, ret, end(start->data));
bch_btree_iter_push(iter, ret, bset_bkey_last(start->data));
}
return ret;
@ -1067,7 +1067,7 @@ static void __btree_sort(struct btree *b, struct btree_iter *iter,
} else {
b->sets[start].data->keys = out->keys;
memcpy(b->sets[start].data->start, out->start,
(void *) end(out) - (void *) out->start);
(void *) bset_bkey_last(out) - (void *) out->start);
}
if (used_mempool)

30
drivers/md/bcache/bset.h
View File

@ -190,14 +190,6 @@ struct bset_tree {
struct bset *data;
};
static __always_inline int64_t bkey_cmp(const struct bkey *l,
const struct bkey *r)
{
return unlikely(KEY_INODE(l) != KEY_INODE(r))
? (int64_t) KEY_INODE(l) - (int64_t) KEY_INODE(r)
: (int64_t) KEY_OFFSET(l) - (int64_t) KEY_OFFSET(r);
}
/* Keylists */
struct keylist {
@ -261,6 +253,28 @@ struct bkey *bch_keylist_pop(struct keylist *);
void bch_keylist_pop_front(struct keylist *);
int __bch_keylist_realloc(struct keylist *, unsigned);
/* Bkey utility code */
#define bset_bkey_last(i) bkey_idx((struct bkey *) (i)->d, (i)->keys)
static inline struct bkey *bset_bkey_idx(struct bset *i, unsigned idx)
{
return bkey_idx(i->start, idx);
}
static inline void bkey_init(struct bkey *k)
{
*k = ZERO_KEY;
}
static __always_inline int64_t bkey_cmp(const struct bkey *l,
const struct bkey *r)
{
return unlikely(KEY_INODE(l) != KEY_INODE(r))
? (int64_t) KEY_INODE(l) - (int64_t) KEY_INODE(r)
: (int64_t) KEY_OFFSET(l) - (int64_t) KEY_OFFSET(r);
}
void bch_bkey_copy_single_ptr(struct bkey *, const struct bkey *,
unsigned);
bool __bch_cut_front(const struct bkey *, struct bkey *);

33
drivers/md/bcache/btree.c
View File

@ -197,7 +197,7 @@ void bkey_put(struct cache_set *c, struct bkey *k)
static uint64_t btree_csum_set(struct btree *b, struct bset *i)
{
uint64_t crc = b->key.ptr[0];
void *data = (void *) i + 8, *end = end(i);
void *data = (void *) i + 8, *end = bset_bkey_last(i);
crc = bch_crc64_update(crc, data, end - data);
return crc ^ 0xffffffffffffffffULL;
@ -251,7 +251,7 @@ void bch_btree_node_read_done(struct btree *b)
if (i != b->sets[0].data && !i->keys)
goto err;
bch_btree_iter_push(iter, i->start, end(i));
bch_btree_iter_push(iter, i->start, bset_bkey_last(i));
b->written += set_blocks(i, b->c);
}
@ -1310,7 +1310,7 @@ static int btree_gc_coalesce(struct btree *b, struct btree_op *op,
if (i > 1) {
for (k = n2->start;
k < end(n2);
k < bset_bkey_last(n2);
k = bkey_next(k)) {
if (__set_blocks(n1, n1->keys + keys +
bkey_u64s(k), b->c) > blocks)
@ -1343,16 +1343,17 @@ static int btree_gc_coalesce(struct btree *b, struct btree_op *op,
if (last)
bkey_copy_key(&new_nodes[i]->key, last);
memcpy(end(n1),
memcpy(bset_bkey_last(n1),
n2->start,
(void *) node(n2, keys) - (void *) n2->start);
(void *) bset_bkey_idx(n2, keys) - (void *) n2->start);
n1->keys += keys;
r[i].keys = n1->keys;
memmove(n2->start,
node(n2, keys),
(void *) end(n2) - (void *) node(n2, keys));
bset_bkey_idx(n2, keys),
(void *) bset_bkey_last(n2) -
(void *) bset_bkey_idx(n2, keys));
n2->keys -= keys;
@ -1830,7 +1831,7 @@ static void shift_keys(struct btree *b, struct bkey *where, struct bkey *insert)
memmove((uint64_t *) where + bkey_u64s(insert),
where,
(void *) end(i) - (void *) where);
(void *) bset_bkey_last(i) - (void *) where);
i->keys += bkey_u64s(insert);
bkey_copy(where, insert);
@ -2014,7 +2015,7 @@ static bool btree_insert_key(struct btree *b, struct btree_op *op,
bcache_dev_sectors_dirty_add(b->c, KEY_INODE(k),
KEY_START(k), KEY_SIZE(k));
while (m != end(i) &&
while (m != bset_bkey_last(i) &&
bkey_cmp(k, &START_KEY(m)) > 0)
prev = m, m = bkey_next(m);
@ -2028,12 +2029,12 @@ static bool btree_insert_key(struct btree *b, struct btree_op *op,
goto merged;
status = BTREE_INSERT_STATUS_OVERWROTE;
if (m != end(i) &&
if (m != bset_bkey_last(i) &&
KEY_PTRS(m) == KEY_PTRS(k) && !KEY_SIZE(m))
goto copy;
status = BTREE_INSERT_STATUS_FRONT_MERGE;
if (m != end(i) &&
if (m != bset_bkey_last(i) &&
bch_bkey_try_merge(b, k, m))
goto copy;
} else {
@ -2142,16 +2143,18 @@ static int btree_split(struct btree *b, struct btree_op *op,
*/
while (keys < (n1->sets[0].data->keys * 3) / 5)
keys += bkey_u64s(node(n1->sets[0].data, keys));
keys += bkey_u64s(bset_bkey_idx(n1->sets[0].data,
keys));
bkey_copy_key(&n1->key, node(n1->sets[0].data, keys));
keys += bkey_u64s(node(n1->sets[0].data, keys));
bkey_copy_key(&n1->key,
bset_bkey_idx(n1->sets[0].data, keys));
keys += bkey_u64s(bset_bkey_idx(n1->sets[0].data, keys));
n2->sets[0].data->keys = n1->sets[0].data->keys - keys;
n1->sets[0].data->keys = keys;
memcpy(n2->sets[0].data->start,
end(n1->sets[0].data),
bset_bkey_last(n1->sets[0].data),
n2->sets[0].data->keys * sizeof(uint64_t));
bkey_copy_key(&n2->key, &b->key);

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

@ -84,7 +84,7 @@ static void dump_bset(struct btree *b, struct bset *i, unsigned set)
unsigned j;
char buf[80];
for (k = i->start; k < end(i); k = next) {
for (k = i->start; k < bset_bkey_last(i); k = next) {
next = bkey_next(k);
bch_bkey_to_text(buf, sizeof(buf), k);
@ -102,7 +102,7 @@ static void dump_bset(struct btree *b, struct bset *i, unsigned set)
printk(" %s\n", bch_ptr_status(b->c, k));
if (next < end(i) &&
if (next < bset_bkey_last(i) &&
bkey_cmp(k, !b->level ? &START_KEY(next) : next) > 0)
printk(KERN_ERR "Key skipped backwards\n");
}
@ -162,7 +162,7 @@ void bch_btree_verify(struct btree *b)
if (inmemory->keys != sorted->keys ||
memcmp(inmemory->start,
sorted->start,
(void *) end(inmemory) - (void *) inmemory->start)) {
(void *) bset_bkey_last(inmemory) - (void *) inmemory->start)) {
struct bset *i;
unsigned j;

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

@ -284,7 +284,7 @@ void bch_journal_mark(struct cache_set *c, struct list_head *list)
}
for (k = i->j.start;
k < end(&i->j);
k < bset_bkey_last(&i->j);
k = bkey_next(k)) {
unsigned j;
@ -322,7 +322,7 @@ int bch_journal_replay(struct cache_set *s, struct list_head *list)
n, i->j.seq - 1, start, end);
for (k = i->j.start;
k < end(&i->j);
k < bset_bkey_last(&i->j);
k = bkey_next(k)) {
trace_bcache_journal_replay_key(k);
@ -751,7 +751,7 @@ atomic_t *bch_journal(struct cache_set *c,
w = journal_wait_for_write(c, bch_keylist_nkeys(keys));
memcpy(end(w->data), keys->keys, bch_keylist_bytes(keys));
memcpy(bset_bkey_last(w->data), keys->keys, bch_keylist_bytes(keys));
w->data->keys += bch_keylist_nkeys(keys);
ret = &fifo_back(&c->journal.pin);

2
include/uapi/linux/bcache.h
View File

@ -118,7 +118,7 @@ static inline struct bkey *bkey_next(const struct bkey *k)
return (struct bkey *) (d + bkey_u64s(k));
}
static inline struct bkey *bkey_last(const struct bkey *k, unsigned nr_keys)
static inline struct bkey *bkey_idx(const struct bkey *k, unsigned nr_keys)
{
__u64 *d = (void *) k;
return (struct bkey *) (d + nr_keys);