diff options
| author |   Xishi Qiu <qiuxishi@huawei.com> | 2013-11-12 15:07:13 -0800 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2013-11-13 12:09:03 +0900 |
| commit | c1ce4b375fa7b76d8b553d4f8d6cc5a09f063691 (patch) | |
| tree | 50ed8b8cdfbbd6ae59c99f9650a24192be3aa34b /arch/metag | |
| parent | mm/compaction.c: update comment about zone lock in isolate_freepages_block (diff) | |
| download | linux-dev-c1ce4b375fa7b76d8b553d4f8d6cc5a09f063691.tar.xz linux-dev-c1ce4b375fa7b76d8b553d4f8d6cc5a09f063691.zip | |
mm/arch: use __free_reserved_page() to simplify the code
Use __free_reserved_page() to simplify the code in arch.
It used split_page() in consistent_alloc()/__dma_alloc_coherent()/dma_alloc_coherent(),
so page->_count == 1, and we can free it safely.
__free_reserved_page()
ClearPageReserved()
init_page_count() // it won't change the value
__free_page()
Signed-off-by: Xishi Qiu <qiuxishi@huawei.com>
Cc: James Hogan <james.hogan@imgtec.com>
Cc: Michal Simek <monstr@monstr.eu>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/metag')
| -rw-r--r-- | arch/metag/kernel/dma.c | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/arch/metag/kernel/dma.c b/arch/metag/kernel/dma.c index 8c00dedadc54..db589ad5dbc4 100644 --- a/arch/metag/kernel/dma.c +++ b/arch/metag/kernel/dma.c @@ -305,9 +305,7 @@ void dma_free_coherent(struct device *dev, size_t size, if (pfn_valid(pfn)) { struct page *page = pfn_to_page(pfn); - ClearPageReserved(page); - - __free_page(page); + __free_reserved_page(page); continue; } } |