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| author | T Makphaibulchoke <tmac@hp.com> | 2014-03-19 03:19:41 +0400 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2014-03-19 03:19:41 +0400 |
| commit | 3e037e5211252902a188a6a11aecd247409d0229 (patch) | |
| tree | 55bddffd164cc22ceba4020d9a0e9d2f666d40d4 /include/linux/mbcache.h | |
| parent | b8a8684502a0fc852afa0056c6bb2a9273f6fcc0 (diff) | |
| download | linux-3e037e5211252902a188a6a11aecd247409d0229.tar.xz | |
fs/mbcache.c: change block and index hash chain to hlist_bl_node
This patch changes each mb_cache's both block and index hash chains to
use a hlist_bl_node, which contains a built-in lock. This is the
first step in decoupling of locks serializing accesses to mb_cache
global data and each mb_cache_entry local data.
Signed-off-by: T. Makphaibulchoke <tmac@hp.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Diffstat (limited to 'include/linux/mbcache.h')
| -rw-r--r-- | include/linux/mbcache.h | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/include/linux/mbcache.h b/include/linux/mbcache.h index 5525d370701d..6a392e7a723a 100644 --- a/include/linux/mbcache.h +++ b/include/linux/mbcache.h @@ -3,19 +3,21 @@ (C) 2001 by Andreas Gruenbacher, <a.gruenbacher@computer.org> */ - struct mb_cache_entry { struct list_head e_lru_list; struct mb_cache *e_cache; unsigned short e_used; unsigned short e_queued; + atomic_t e_refcnt; struct block_device *e_bdev; sector_t e_block; - struct list_head e_block_list; + struct hlist_bl_node e_block_list; struct { - struct list_head o_list; + struct hlist_bl_node o_list; unsigned int o_key; } e_index; + struct hlist_bl_head *e_block_hash_p; + struct hlist_bl_head *e_index_hash_p; }; struct mb_cache { @@ -25,8 +27,8 @@ struct mb_cache { int c_max_entries; int c_bucket_bits; struct kmem_cache *c_entry_cache; - struct list_head *c_block_hash; - struct list_head *c_index_hash; + struct hlist_bl_head *c_block_hash; + struct hlist_bl_head *c_index_hash; }; /* Functions on caches */ |