mm/page_alloc: remove obsolete gfpflags_normal_context()
Since commit dacb5d8875
("tcp: fix page frag corruption on page fault"),
there's no caller of gfpflags_normal_context(). Remove it as this helper
is strictly tied to the sk page frag usage and there won't be other user
in the future.
[linmiaohe@huawei.com: fix htmldocs]
Link: https://lkml.kernel.org/r/1bc55727-9b66-0e9e-c306-f10c4716ea89@huawei.com
Link: https://lkml.kernel.org/r/20220916072257.9639-16-linmiaohe@huawei.com
Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Anshuman Khandual <anshuman.khandual@arm.com>
Reviewed-by: Oscar Salvador <osalvador@suse.de>
Cc: Matthew Wilcox <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
parent
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@ -19,9 +19,6 @@ User Space Memory Access
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Memory Allocation Controls
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==========================
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.. kernel-doc:: include/linux/gfp.h
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:internal:
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.. kernel-doc:: include/linux/gfp_types.h
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:doc: Page mobility and placement hints
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@ -36,29 +36,6 @@ static inline bool gfpflags_allow_blocking(const gfp_t gfp_flags)
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return !!(gfp_flags & __GFP_DIRECT_RECLAIM);
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}
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/**
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* gfpflags_normal_context - is gfp_flags a normal sleepable context?
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* @gfp_flags: gfp_flags to test
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*
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* Test whether @gfp_flags indicates that the allocation is from the
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* %current context and allowed to sleep.
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*
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* An allocation being allowed to block doesn't mean it owns the %current
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* context. When direct reclaim path tries to allocate memory, the
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* allocation context is nested inside whatever %current was doing at the
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* time of the original allocation. The nested allocation may be allowed
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* to block but modifying anything %current owns can corrupt the outer
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* context's expectations.
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*
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* %true result from this function indicates that the allocation context
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* can sleep and use anything that's associated with %current.
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*/
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static inline bool gfpflags_normal_context(const gfp_t gfp_flags)
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{
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return (gfp_flags & (__GFP_DIRECT_RECLAIM | __GFP_MEMALLOC)) ==
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__GFP_DIRECT_RECLAIM;
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}
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#ifdef CONFIG_HIGHMEM
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#define OPT_ZONE_HIGHMEM ZONE_HIGHMEM
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#else
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