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| author | Joel Becker <Joel.Becker@oracle.com> | 2006-03-17 02:40:37 +0100 |
|---|---|---|
| committer | Mark Fasheh <mark.fasheh@oracle.com> | 2006-06-26 23:42:42 +0200 |
| commit | c8f33b6e86af74ee7b800f57cac7b3c8559318fe (patch) | |
| tree | 8806647e8f7a6525539d0a7ecdbe8f375b8f91a3 /fs/ocfs2/dlm/dlmcommon.h | |
| parent | ocfs2: allocate lockres hash pages in an array (diff) | |
| download | linux-c8f33b6e86af74ee7b800f57cac7b3c8559318fe.tar.xz linux-c8f33b6e86af74ee7b800f57cac7b3c8559318fe.zip | |
[PATCH] ocfs2: Alloc at least a page for the DLM hash
The OCFS2 DLM allocates a number of pages for a hash to lookup locks.
There was a bug where a PAGE_SIZE bigger than the hash size (eg, 64K
pages) would result in zero pages allocated.
Signed-off-by: Joel Becker <joel.becker@oracle.com>
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 | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/fs/ocfs2/dlm/dlmcommon.h b/fs/ocfs2/dlm/dlmcommon.h index 0378ddbc8a8c..4fc1be3a3fa2 100644 --- a/fs/ocfs2/dlm/dlmcommon.h +++ b/fs/ocfs2/dlm/dlmcommon.h @@ -37,8 +37,12 @@ #define DLM_THREAD_SHUFFLE_INTERVAL 5 // flush everything every 5 passes #define DLM_THREAD_MS 200 // flush at least every 200 ms -#define DLM_HASH_SIZE (1 << 14) -#define DLM_HASH_PAGES (DLM_HASH_SIZE / PAGE_SIZE) +#define DLM_HASH_SIZE_DEFAULT (1 << 14) +#if DLM_HASH_SIZE_DEFAULT < PAGE_SIZE +# define DLM_HASH_PAGES 1 +#else +# define DLM_HASH_PAGES (DLM_HASH_SIZE_DEFAULT / PAGE_SIZE) +#endif #define DLM_BUCKETS_PER_PAGE (PAGE_SIZE / sizeof(struct hlist_head)) #define DLM_HASH_BUCKETS (DLM_HASH_PAGES * DLM_BUCKETS_PER_PAGE) |