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| author | Kirill A. Shutemov <kirill.shutemov@linux.intel.com> | 2024-08-09 13:48:48 +0200 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2024-09-02 05:26:06 +0200 |
| commit | 3a80b8228f6ff0b3e56205231bef8ca69cb739d8 (patch) | |
| tree | f3397d16a8a362cce6cd3e77cc073801c60f21b8 /mm/page_alloc.c | |
| parent | mm/migrate: move common code to numa_migrate_check (was numa_migrate_prep) (diff) | |
| download | linux-3a80b8228f6ff0b3e56205231bef8ca69cb739d8.tar.xz linux-3a80b8228f6ff0b3e56205231bef8ca69cb739d8.zip | |
mm: reduce deferred struct page init ifdeffery
Patch series "mm: Fix several issues with unaccepted memory", v2.
The patchset addresses several issues related to unaccepted memory.
Pacth 1/7 preparatory cleanup.
Patch 2/7 ensures that __alloc_pages_bulk() will not exhaust all
accepted memory without accepting more.
Patches 3/7-5/7 are preparations for patch 6/7, which fixes
alloc_config_page() on machines with unaccepted memory. This allows, for
example, the allocation of gigantic pages at runtime.
Patch 7/7 enables the kernel to accept memory up to the promo watermark.
This patch (of 7):
Add dummy _deferred_grow_zone() for !DEFERRED_STRUCT_PAGE_INIT and remove
#ifdefs in two places.
No functional changes.
Link: https://lkml.kernel.org/r/20240809114854.3745464-1-kirill.shutemov@linux.intel.com
Link: https://lkml.kernel.org/r/20240809114854.3745464-3-kirill.shutemov@linux.intel.com
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Suggested-by: David Hildenbrand <david@redhat.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Mike Rapoport (Microsoft) <rppt@kernel.org>
Cc: Tom Lendacky <thomas.lendacky@amd.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'mm/page_alloc.c')
| -rw-r--r-- | mm/page_alloc.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 60742d057b05..006cab0d2f2f 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -322,6 +322,11 @@ static inline bool deferred_pages_enabled(void) { return false; } + +static inline bool _deferred_grow_zone(struct zone *zone, unsigned int order) +{ + return false; +} #endif /* CONFIG_DEFERRED_STRUCT_PAGE_INIT */ /* Return a pointer to the bitmap storing bits affecting a block of pages */ @@ -3395,7 +3400,6 @@ check_alloc_wmark: if (cond_accept_memory(zone, order)) goto try_this_zone; -#ifdef CONFIG_DEFERRED_STRUCT_PAGE_INIT /* * Watermark failed for this zone, but see if we can * grow this zone if it contains deferred pages. @@ -3404,7 +3408,6 @@ check_alloc_wmark: if (_deferred_grow_zone(zone, order)) goto try_this_zone; } -#endif /* Checked here to keep the fast path fast */ BUILD_BUG_ON(ALLOC_NO_WATERMARKS < NR_WMARK); if (alloc_flags & ALLOC_NO_WATERMARKS) @@ -3450,13 +3453,11 @@ try_this_zone: if (cond_accept_memory(zone, order)) goto try_this_zone; -#ifdef CONFIG_DEFERRED_STRUCT_PAGE_INIT /* Try again if zone has deferred pages */ if (deferred_pages_enabled()) { if (_deferred_grow_zone(zone, order)) goto try_this_zone; } -#endif } } |