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| author | Suren Baghdasaryan <surenb@google.com> | 2024-07-17 14:28:44 -0700 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2024-07-26 14:33:09 -0700 |
| commit | b3bebe44306e23827397d0d774d206e3fa374041 (patch) | |
| tree | 10ab5999a2641cd0fcf7bd835af3b8613de57d28 /mm | |
| parent | bf6acd5d16057d7accbbb1bf7dc6d8c56eeb4ecc (diff) | |
| download | linux-stable-b3bebe44306e23827397d0d774d206e3fa374041.tar.gz linux-stable-b3bebe44306e23827397d0d774d206e3fa374041.tar.bz2 linux-stable-b3bebe44306e23827397d0d774d206e3fa374041.zip | |
alloc_tag: outline and export free_reserved_page()
Outline and export free_reserved_page() because modules use it and it in
turn uses page_ext_{get|put} which should not be exported. The same
result could be obtained by outlining {get|put}_page_tag_ref() but that
would have higher performance impact as these functions are used in more
performance critical paths.
Link: https://lkml.kernel.org/r/20240717212844.2749975-1-surenb@google.com
Fixes: dcfe378c81f7 ("lib: introduce support for page allocation tagging")
Signed-off-by: Suren Baghdasaryan <surenb@google.com>
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202407080044.DWMC9N9I-lkp@intel.com/
Suggested-by: Christoph Hellwig <hch@infradead.org>
Suggested-by: Vlastimil Babka <vbabka@suse.cz>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Kees Cook <keescook@chromium.org>
Cc: Kent Overstreet <kent.overstreet@linux.dev>
Cc: Pasha Tatashin <pasha.tatashin@soleen.com>
Cc: Sourav Panda <souravpanda@google.com>
Cc: <stable@vger.kernel.org> [6.10]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/page_alloc.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 8337926b89d4..7ac8d61148fe 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -5815,6 +5815,23 @@ unsigned long free_reserved_area(void *start, void *end, int poison, const char return pages; } +void free_reserved_page(struct page *page) +{ + if (mem_alloc_profiling_enabled()) { + union codetag_ref *ref = get_page_tag_ref(page); + + if (ref) { + set_codetag_empty(ref); + put_page_tag_ref(ref); + } + } + ClearPageReserved(page); + init_page_count(page); + __free_page(page); + adjust_managed_page_count(page, 1); +} +EXPORT_SYMBOL(free_reserved_page); + static int page_alloc_cpu_dead(unsigned int cpu) { struct zone *zone; |