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| author | Matthew Wilcox (Oracle) <willy@infradead.org> | 2023-08-16 16:11:50 +0100 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2023-08-21 14:28:43 -0700 |
| commit | dd6fa0b61814492476463149c91110e529364e82 (patch) | |
| tree | 79f3c0ef997a8583ca3c4d2fd6faa4d446caa65f /include | |
| parent | 99a9e0b83ab9955e604397717b82267feb021df3 (diff) | |
| download | lwn-dd6fa0b61814492476463149c91110e529364e82.tar.gz lwn-dd6fa0b61814492476463149c91110e529364e82.zip | |
mm: call free_huge_page() directly
Indirect calls are expensive, thanks to Spectre. Call free_huge_page()
directly if the folio belongs to hugetlb.
Link: https://lkml.kernel.org/r/20230816151201.3655946-3-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: David Hildenbrand <david@redhat.com>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Sidhartha Kumar <sidhartha.kumar@oracle.com>
Cc: Yanteng Si <siyanteng@loongson.cn>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/hugetlb.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/include/linux/hugetlb.h b/include/linux/hugetlb.h index 0a393bc02f25..5a1dfaffbd80 100644 --- a/include/linux/hugetlb.h +++ b/include/linux/hugetlb.h @@ -26,6 +26,8 @@ typedef struct { unsigned long pd; } hugepd_t; #define __hugepd(x) ((hugepd_t) { (x) }) #endif +void free_huge_page(struct page *page); + #ifdef CONFIG_HUGETLB_PAGE #include <linux/mempolicy.h> @@ -165,7 +167,6 @@ int get_huge_page_for_hwpoison(unsigned long pfn, int flags, bool *migratable_cleared); void folio_putback_active_hugetlb(struct folio *folio); void move_hugetlb_state(struct folio *old_folio, struct folio *new_folio, int reason); -void free_huge_page(struct page *page); void hugetlb_fix_reserve_counts(struct inode *inode); extern struct mutex *hugetlb_fault_mutex_table; u32 hugetlb_fault_mutex_hash(struct address_space *mapping, pgoff_t idx); |