diff options
Diffstat (limited to 'fs/mbcache.c')
| -rw-r--r-- | fs/mbcache.c | 14 |
1 files changed, 8 insertions, 6 deletions
diff --git a/fs/mbcache.c b/fs/mbcache.c index e272ad738faf..2a4b8b549e93 100644 --- a/fs/mbcache.c +++ b/fs/mbcache.c @@ -100,8 +100,9 @@ int mb_cache_entry_create(struct mb_cache *cache, gfp_t mask, u32 key, atomic_set(&entry->e_refcnt, 2); entry->e_key = key; entry->e_value = value; - entry->e_reusable = reusable; - entry->e_referenced = 0; + entry->e_flags = 0; + if (reusable) + set_bit(MBE_REUSABLE_B, &entry->e_flags); head = mb_cache_entry_head(cache, key); hlist_bl_lock(head); hlist_bl_for_each_entry(dup, dup_node, head, e_hash_list) { @@ -165,7 +166,8 @@ static struct mb_cache_entry *__entry_find(struct mb_cache *cache, while (node) { entry = hlist_bl_entry(node, struct mb_cache_entry, e_hash_list); - if (entry->e_key == key && entry->e_reusable && + if (entry->e_key == key && + test_bit(MBE_REUSABLE_B, &entry->e_flags) && atomic_inc_not_zero(&entry->e_refcnt)) goto out; node = node->next; @@ -284,7 +286,7 @@ EXPORT_SYMBOL(mb_cache_entry_delete_or_get); void mb_cache_entry_touch(struct mb_cache *cache, struct mb_cache_entry *entry) { - entry->e_referenced = 1; + set_bit(MBE_REFERENCED_B, &entry->e_flags); } EXPORT_SYMBOL(mb_cache_entry_touch); @@ -309,9 +311,9 @@ static unsigned long mb_cache_shrink(struct mb_cache *cache, entry = list_first_entry(&cache->c_list, struct mb_cache_entry, e_list); /* Drop initial hash reference if there is no user */ - if (entry->e_referenced || + if (test_bit(MBE_REFERENCED_B, &entry->e_flags) || atomic_cmpxchg(&entry->e_refcnt, 1, 0) != 1) { - entry->e_referenced = 0; + clear_bit(MBE_REFERENCED_B, &entry->e_flags); list_move_tail(&entry->e_list, &cache->c_list); continue; } |