diff options
Diffstat (limited to 'target/linux/generic/backport-4.9/041-mm-rename-__alloc_page_frag-to-page_frag_alloc-and-_.patch')
| -rw-r--r-- | target/linux/generic/backport-4.9/041-mm-rename-__alloc_page_frag-to-page_frag_alloc-and-_.patch | 137 |
1 files changed, 137 insertions, 0 deletions
diff --git a/target/linux/generic/backport-4.9/041-mm-rename-__alloc_page_frag-to-page_frag_alloc-and-_.patch b/target/linux/generic/backport-4.9/041-mm-rename-__alloc_page_frag-to-page_frag_alloc-and-_.patch new file mode 100644 index 0000000000..896ba415fe --- /dev/null +++ b/target/linux/generic/backport-4.9/041-mm-rename-__alloc_page_frag-to-page_frag_alloc-and-_.patch @@ -0,0 +1,137 @@ +From: Alexander Duyck <alexander.h.duyck@intel.com> +Date: Tue, 10 Jan 2017 16:58:06 -0800 +Subject: [PATCH] mm: rename __alloc_page_frag to page_frag_alloc and + __free_page_frag to page_frag_free + +Patch series "Page fragment updates", v4. + +This patch series takes care of a few cleanups for the page fragments +API. + +First we do some renames so that things are much more consistent. First +we move the page_frag_ portion of the name to the front of the functions +names. Secondly we split out the cache specific functions from the +other page fragment functions by adding the word "cache" to the name. + +Finally I added a bit of documentation that will hopefully help to +explain some of this. I plan to revisit this later as we get things +more ironed out in the near future with the changes planned for the DMA +setup to support eXpress Data Path. + +This patch (of 3): + +This patch renames the page frag functions to be more consistent with +other APIs. Specifically we place the name page_frag first in the name +and then have either an alloc or free call name that we append as the +suffix. This makes it a bit clearer in terms of naming. + +In addition we drop the leading double underscores since we are +technically no longer a backing interface and instead the front end that +is called from the networking APIs. + +Link: http://lkml.kernel.org/r/20170104023854.13451.67390.stgit@localhost.localdomain +Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com> +Signed-off-by: Andrew Morton <akpm@linux-foundation.org> +Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> +--- + +--- a/include/linux/gfp.h ++++ b/include/linux/gfp.h +@@ -508,9 +508,9 @@ extern void free_hot_cold_page_list(stru + struct page_frag_cache; + extern void __page_frag_drain(struct page *page, unsigned int order, + unsigned int count); +-extern void *__alloc_page_frag(struct page_frag_cache *nc, +- unsigned int fragsz, gfp_t gfp_mask); +-extern void __free_page_frag(void *addr); ++extern void *page_frag_alloc(struct page_frag_cache *nc, ++ unsigned int fragsz, gfp_t gfp_mask); ++extern void page_frag_free(void *addr); + + #define __free_page(page) __free_pages((page), 0) + #define free_page(addr) free_pages((addr), 0) +--- a/include/linux/skbuff.h ++++ b/include/linux/skbuff.h +@@ -2471,7 +2471,7 @@ static inline struct sk_buff *netdev_all + + static inline void skb_free_frag(void *addr) + { +- __free_page_frag(addr); ++ page_frag_free(addr); + } + + void *napi_alloc_frag(unsigned int fragsz); +--- a/mm/page_alloc.c ++++ b/mm/page_alloc.c +@@ -3960,8 +3960,8 @@ void __page_frag_drain(struct page *page + } + EXPORT_SYMBOL(__page_frag_drain); + +-void *__alloc_page_frag(struct page_frag_cache *nc, +- unsigned int fragsz, gfp_t gfp_mask) ++void *page_frag_alloc(struct page_frag_cache *nc, ++ unsigned int fragsz, gfp_t gfp_mask) + { + unsigned int size = PAGE_SIZE; + struct page *page; +@@ -4012,19 +4012,19 @@ refill: + + return nc->va + offset; + } +-EXPORT_SYMBOL(__alloc_page_frag); ++EXPORT_SYMBOL(page_frag_alloc); + + /* + * Frees a page fragment allocated out of either a compound or order 0 page. + */ +-void __free_page_frag(void *addr) ++void page_frag_free(void *addr) + { + struct page *page = virt_to_head_page(addr); + + if (unlikely(put_page_testzero(page))) + __free_pages_ok(page, compound_order(page)); + } +-EXPORT_SYMBOL(__free_page_frag); ++EXPORT_SYMBOL(page_frag_free); + + static void *make_alloc_exact(unsigned long addr, unsigned int order, + size_t size) +--- a/net/core/skbuff.c ++++ b/net/core/skbuff.c +@@ -369,7 +369,7 @@ static void *__netdev_alloc_frag(unsigne + + local_irq_save(flags); + nc = this_cpu_ptr(&netdev_alloc_cache); +- data = __alloc_page_frag(nc, fragsz, gfp_mask); ++ data = page_frag_alloc(nc, fragsz, gfp_mask); + local_irq_restore(flags); + return data; + } +@@ -391,7 +391,7 @@ static void *__napi_alloc_frag(unsigned + { + struct napi_alloc_cache *nc = this_cpu_ptr(&napi_alloc_cache); + +- return __alloc_page_frag(&nc->page, fragsz, gfp_mask); ++ return page_frag_alloc(&nc->page, fragsz, gfp_mask); + } + + void *napi_alloc_frag(unsigned int fragsz) +@@ -441,7 +441,7 @@ struct sk_buff *__netdev_alloc_skb(struc + local_irq_save(flags); + + nc = this_cpu_ptr(&netdev_alloc_cache); +- data = __alloc_page_frag(nc, len, gfp_mask); ++ data = page_frag_alloc(nc, len, gfp_mask); + pfmemalloc = nc->pfmemalloc; + + local_irq_restore(flags); +@@ -505,7 +505,7 @@ struct sk_buff *__napi_alloc_skb(struct + if (sk_memalloc_socks()) + gfp_mask |= __GFP_MEMALLOC; + +- data = __alloc_page_frag(&nc->page, len, gfp_mask); ++ data = page_frag_alloc(&nc->page, len, gfp_mask); + if (unlikely(!data)) + return NULL; + |