diff options
| author | Matthew Wilcox (Oracle) <willy@infradead.org> | 2024-01-11 21:12:18 +0300 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2024-02-22 03:00:03 +0300 |
| commit | b67fa6e47bffd6edf417a789c7010cc32a47a41b (patch) | |
| tree | fafd0f4b01433540b5718122d0d1f57b09e49f79 /mm/memcontrol.c | |
| parent | b46777da7d8d82258764da8e0b2273d8dff809d9 (diff) | |
| download | linux-b67fa6e47bffd6edf417a789c7010cc32a47a41b.tar.xz | |
memcg: use a folio in get_mctgt_type
Replace seven calls to compound_head() with one. We still use the page as
page_mapped() is different from folio_mapped().
Link: https://lkml.kernel.org/r/20240111181219.3462852-4-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Reviewed-by: Roman Gushchin <roman.gushchin@linux.dev>
Reviewed-by: Muchun Song <muchun.song@linux.dev>
Acked-by: Shakeel Butt <shakeelb@google.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'mm/memcontrol.c')
| -rw-r--r-- | mm/memcontrol.c | 23 |
1 files changed, 13 insertions, 10 deletions
diff --git a/mm/memcontrol.c b/mm/memcontrol.c index f52cbc42359e..a5bc34d44dbd 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -6109,6 +6109,7 @@ static enum mc_target_type get_mctgt_type(struct vm_area_struct *vma, unsigned long addr, pte_t ptent, union mc_target *target) { struct page *page = NULL; + struct folio *folio; enum mc_target_type ret = MC_TARGET_NONE; swp_entry_t ent = { .val = 0 }; @@ -6123,9 +6124,11 @@ static enum mc_target_type get_mctgt_type(struct vm_area_struct *vma, else if (is_swap_pte(ptent)) page = mc_handle_swap_pte(vma, ptent, &ent); + if (page) + folio = page_folio(page); if (target && page) { - if (!trylock_page(page)) { - put_page(page); + if (!folio_trylock(folio)) { + folio_put(folio); return ret; } /* @@ -6140,8 +6143,8 @@ static enum mc_target_type get_mctgt_type(struct vm_area_struct *vma, * Alas, skip moving the page in this case. */ if (!pte_present(ptent) && page_mapped(page)) { - unlock_page(page); - put_page(page); + folio_unlock(folio); + folio_put(folio); return ret; } } @@ -6154,18 +6157,18 @@ static enum mc_target_type get_mctgt_type(struct vm_area_struct *vma, * mem_cgroup_move_account() checks the page is valid or * not under LRU exclusion. */ - if (page_memcg(page) == mc.from) { + if (folio_memcg(folio) == mc.from) { ret = MC_TARGET_PAGE; - if (is_device_private_page(page) || - is_device_coherent_page(page)) + if (folio_is_device_private(folio) || + folio_is_device_coherent(folio)) ret = MC_TARGET_DEVICE; if (target) - target->folio = page_folio(page); + target->folio = folio; } if (!ret || !target) { if (target) - unlock_page(page); - put_page(page); + folio_unlock(folio); + folio_put(folio); } } /* |