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| author | James Bottomley <jejb@mulgrave.il.steeleye.com> | 2006-08-28 06:59:59 +0400 |
|---|---|---|
| committer | James Bottomley <jejb@mulgrave.il.steeleye.com> | 2006-08-28 06:59:59 +0400 |
| commit | 8ce7a9c159c8c4eb480f0a65c6af753dbf9a1a70 (patch) | |
| tree | be59573c0af3617d0cd8a7d61f0ed119e58b1156 /drivers/infiniband/hw/mthca/mthca_allocator.c | |
| parent | d2afb3ae04e36dbc6e9eb2d8bd54406ff7b6b3bd (diff) | |
| parent | 01da5fd83d6b2c5e36b77539f6cbdd8f49849225 (diff) | |
| download | linux-8ce7a9c159c8c4eb480f0a65c6af753dbf9a1a70.tar.xz | |
Merge ../linux-2.6
Diffstat (limited to 'drivers/infiniband/hw/mthca/mthca_allocator.c')
| -rw-r--r-- | drivers/infiniband/hw/mthca/mthca_allocator.c | 15 |
1 files changed, 8 insertions, 7 deletions
diff --git a/drivers/infiniband/hw/mthca/mthca_allocator.c b/drivers/infiniband/hw/mthca/mthca_allocator.c index 9ba3211cef7c..25157f57a6d0 100644 --- a/drivers/infiniband/hw/mthca/mthca_allocator.c +++ b/drivers/infiniband/hw/mthca/mthca_allocator.c @@ -108,14 +108,15 @@ void mthca_alloc_cleanup(struct mthca_alloc *alloc) * serialize access to the array. */ +#define MTHCA_ARRAY_MASK (PAGE_SIZE / sizeof (void *) - 1) + void *mthca_array_get(struct mthca_array *array, int index) { int p = (index * sizeof (void *)) >> PAGE_SHIFT; - if (array->page_list[p].page) { - int i = index & (PAGE_SIZE / sizeof (void *) - 1); - return array->page_list[p].page[i]; - } else + if (array->page_list[p].page) + return array->page_list[p].page[index & MTHCA_ARRAY_MASK]; + else return NULL; } @@ -130,8 +131,7 @@ int mthca_array_set(struct mthca_array *array, int index, void *value) if (!array->page_list[p].page) return -ENOMEM; - array->page_list[p].page[index & (PAGE_SIZE / sizeof (void *) - 1)] = - value; + array->page_list[p].page[index & MTHCA_ARRAY_MASK] = value; ++array->page_list[p].used; return 0; @@ -144,7 +144,8 @@ void mthca_array_clear(struct mthca_array *array, int index) if (--array->page_list[p].used == 0) { free_page((unsigned long) array->page_list[p].page); array->page_list[p].page = NULL; - } + } else + array->page_list[p].page[index & MTHCA_ARRAY_MASK] = NULL; if (array->page_list[p].used < 0) pr_debug("Array %p index %d page %d with ref count %d < 0\n", |