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| author | Mark Fasheh <mark.fasheh@oracle.com> | 2006-03-10 02:55:56 +0100 |
|---|---|---|
| committer | Mark Fasheh <mark.fasheh@oracle.com> | 2006-06-26 23:42:39 +0200 |
| commit | a3d3329159ea76bae0b3b8680691a1c3ecf5801f (patch) | |
| tree | a4521103c45190ff340f918d131649a20b414b27 /fs/ocfs2/dlm/dlmcommon.h | |
| parent | ocfs2: move lockres qstr next to hlist_node structure (diff) | |
| download | linux-a3d3329159ea76bae0b3b8680691a1c3ecf5801f.tar.xz linux-a3d3329159ea76bae0b3b8680691a1c3ecf5801f.zip | |
ocfs2: calculate lockid hash values outside of the spinlock
Fixes a performance bug - pointed out by Andrew.
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
Diffstat (limited to 'fs/ocfs2/dlm/dlmcommon.h')
| -rw-r--r-- | fs/ocfs2/dlm/dlmcommon.h | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/fs/ocfs2/dlm/dlmcommon.h b/fs/ocfs2/dlm/dlmcommon.h index 1c05d485e019..3b675368762e 100644 --- a/fs/ocfs2/dlm/dlmcommon.h +++ b/fs/ocfs2/dlm/dlmcommon.h @@ -39,6 +39,9 @@ #define DLM_HASH_BUCKETS (PAGE_SIZE / sizeof(struct hlist_head)) +/* Intended to make it easier for us to switch out hash functions */ +#define dlm_lockid_hash(_n, _l) full_name_hash(_n, _l) + enum dlm_ast_type { DLM_AST = 0, DLM_BAST, @@ -694,7 +697,8 @@ void __dlm_insert_lockres(struct dlm_ctxt *dlm, struct dlm_lock_resource *res); struct dlm_lock_resource * __dlm_lookup_lockres(struct dlm_ctxt *dlm, const char *name, - unsigned int len); + unsigned int len, + unsigned int hash); struct dlm_lock_resource * dlm_lookup_lockres(struct dlm_ctxt *dlm, const char *name, unsigned int len); |