diff options
| author | Keith Busch <kbusch@kernel.org> | 2023-01-26 13:51:22 -0800 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2023-05-06 10:33:37 -0700 |
| commit | cc669954ab38866c1aba73c27e17bb07bcb4a194 (patch) | |
| tree | e0d3d193bbe411f46bf47e651d8faeb584adc69e /mm | |
| parent | f0bccea6bc0caa0db9c68d28123f242a6295c5dd (diff) | |
| download | linux-cc669954ab38866c1aba73c27e17bb07bcb4a194.tar.gz | |
dmapool: simplify freeing
The actions for busy and not busy are mostly the same, so combine these
and remove the unnecessary function. Also, the pool is about to be freed
so there's no need to poison the page data since we only check for poison
on alloc, which can't be done on a freed pool.
Link: https://lkml.kernel.org/r/20230126215125.4069751-10-kbusch@meta.com
Fixes: 2d55c16c0c54 ("dmapool: create/destroy cleanup")
Signed-off-by: Keith Busch <kbusch@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Tony Battersby <tonyb@cybernetics.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/dmapool.c | 22 |
1 files changed, 6 insertions, 16 deletions
diff --git a/mm/dmapool.c b/mm/dmapool.c index 9e98065a68b1f5..4dea2a0dbd336f 100644 --- a/mm/dmapool.c +++ b/mm/dmapool.c @@ -312,16 +312,6 @@ static inline bool is_page_busy(struct dma_page *page) return page->in_use != 0; } -static void pool_free_page(struct dma_pool *pool, struct dma_page *page) -{ - dma_addr_t dma = page->dma; - - pool_init_page(pool, page); - dma_free_coherent(pool->dev, pool->allocation, page->vaddr, dma); - list_del(&page->page_list); - kfree(page); -} - /** * dma_pool_destroy - destroys a pool of dma memory blocks. * @pool: dma pool that will be destroyed @@ -349,14 +339,14 @@ void dma_pool_destroy(struct dma_pool *pool) mutex_unlock(&pools_reg_lock); list_for_each_entry_safe(page, tmp, &pool->page_list, page_list) { - if (is_page_busy(page)) { + if (!is_page_busy(page)) + dma_free_coherent(pool->dev, pool->allocation, + page->vaddr, page->dma); + else dev_err(pool->dev, "%s %s, %p busy\n", __func__, pool->name, page->vaddr); - /* leak the still-in-use consistent memory */ - list_del(&page->page_list); - kfree(page); - } else - pool_free_page(pool, page); + list_del(&page->page_list); + kfree(page); } kfree(pool); |