diff options
| author | Aaron Lu <aaron.lu@intel.com> | 2018-12-28 00:35:22 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2018-12-28 12:11:48 -0800 |
| commit | 742aa7fb52c56fb3b307e704f93e67b698959cc2 (patch) | |
| tree | 4a5fe6c5984f2cb38b6543f60a1d6cd00d8a53fc /mm | |
| parent | 65895b67ad27df0f62bfaf82dd5622f95ea29196 (diff) | |
mm/page_alloc.c: use a single function to free page
There are multiple places of freeing a page, they all do the same things
so a common function can be used to reduce code duplicate.
It also avoids bug fixed in one function but left in another.
Link: http://lkml.kernel.org/r/20181119134834.17765-3-aaron.lu@intel.com
Signed-off-by: Aaron Lu <aaron.lu@intel.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Alexander Duyck <alexander.h.duyck@linux.intel.com>
Cc: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Cc: Jesper Dangaard Brouer <brouer@redhat.com>
Cc: Mel Gorman <mgorman@techsingularity.net>
Cc: Pankaj gupta <pagupta@redhat.com>
Cc: Pawel Staszewski <pstaszewski@itcare.pl>
Cc: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/page_alloc.c | 37 |
1 files changed, 14 insertions, 23 deletions
diff --git a/mm/page_alloc.c b/mm/page_alloc.c index f0617cf88706..298b449a03c7 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -4427,16 +4427,19 @@ unsigned long get_zeroed_page(gfp_t gfp_mask) } EXPORT_SYMBOL(get_zeroed_page); -void __free_pages(struct page *page, unsigned int order) +static inline void free_the_page(struct page *page, unsigned int order) { - if (put_page_testzero(page)) { - if (order == 0) - free_unref_page(page); - else - __free_pages_ok(page, order); - } + if (order == 0) /* Via pcp? */ + free_unref_page(page); + else + __free_pages_ok(page, order); } +void __free_pages(struct page *page, unsigned int order) +{ + if (put_page_testzero(page)) + free_the_page(page, order); +} EXPORT_SYMBOL(__free_pages); void free_pages(unsigned long addr, unsigned int order) @@ -4485,14 +4488,8 @@ void __page_frag_cache_drain(struct page *page, unsigned int count) { VM_BUG_ON_PAGE(page_ref_count(page) == 0, page); - if (page_ref_sub_and_test(page, count)) { - unsigned int order = compound_order(page); - - if (order == 0) - free_unref_page(page); - else - __free_pages_ok(page, order); - } + if (page_ref_sub_and_test(page, count)) + free_the_page(page, compound_order(page)); } EXPORT_SYMBOL(__page_frag_cache_drain); @@ -4557,14 +4554,8 @@ void page_frag_free(void *addr) { struct page *page = virt_to_head_page(addr); - if (unlikely(put_page_testzero(page))) { - unsigned int order = compound_order(page); - - if (order == 0) /* Via pcp? */ - free_unref_page(page); - else - __free_pages_ok(page, order); - } + if (unlikely(put_page_testzero(page))) + free_the_page(page, compound_order(page)); } EXPORT_SYMBOL(page_frag_free); |