diff options
| author | Vishal Moola (Oracle) <vishal.moola@gmail.com> | 2025-11-21 01:44:03 -0800 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2025-11-24 15:08:54 -0800 |
| commit | bb4d3c76860d555aa4cd4b2da44111057066402d (patch) | |
| tree | b6fc1aaf57c048e00bd90b5fdded90d165f7797a /mm | |
| parent | 07003531e03c864b0711757c8009c7f14c95d1d1 (diff) | |
mm/vmalloc: add a helper to optimize vmalloc allocation gfps
vm_area_alloc_pages() attempts to use different gfp flags as a way to
optimize allocations. This has been done inline which makes things harder
to read.
Add a helper function to make the code more readable.
Link: https://lkml.kernel.org/r/20251121094405.40628-3-vishal.moola@gmail.com
Signed-off-by: Vishal Moola (Oracle) <vishal.moola@gmail.com>
Reviewed-by: "Uladzislau Rezki (Sony)" <urezki@gmail.com>
Acked-by: SeongJae Park <sj@kernel.org>
Cc: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/vmalloc.c | 17 |
1 files changed, 14 insertions, 3 deletions
diff --git a/mm/vmalloc.c b/mm/vmalloc.c index c97c874b6666..185add3f5606 100644 --- a/mm/vmalloc.c +++ b/mm/vmalloc.c @@ -3614,6 +3614,17 @@ void *vmap_pfn(unsigned long *pfns, unsigned int count, pgprot_t prot) EXPORT_SYMBOL_GPL(vmap_pfn); #endif /* CONFIG_VMAP_PFN */ +/* + * Helper for vmalloc to adjust the gfp flags for certain allocations. + */ +static inline gfp_t vmalloc_gfp_adjust(gfp_t flags, const bool large) +{ + flags |= __GFP_NOWARN; + if (large) + flags &= ~__GFP_NOFAIL; + return flags; +} + static inline unsigned int vm_area_alloc_pages(gfp_t gfp, int nid, unsigned int order, unsigned int nr_pages, struct page **pages) @@ -3852,9 +3863,9 @@ static void *__vmalloc_area_node(struct vm_struct *area, gfp_t gfp_mask, * Please note, the __vmalloc_node_range_noprof() falls-back * to order-0 pages if high-order attempt is unsuccessful. */ - area->nr_pages = vm_area_alloc_pages((page_order ? - gfp_mask & ~__GFP_NOFAIL : gfp_mask) | __GFP_NOWARN, - node, page_order, nr_small_pages, area->pages); + area->nr_pages = vm_area_alloc_pages( + vmalloc_gfp_adjust(gfp_mask, page_order), node, + page_order, nr_small_pages, area->pages); atomic_long_add(area->nr_pages, &nr_vmalloc_pages); /* All pages of vm should be charged to same memcg, so use first one. */ |