[53/62] mm/slub: Remove pfmemalloc_match_unsafe()

Message ID	20211004134650.4031813-54-willy@infradead.org (mailing list archive)
State	New
Headers	show Return-Path: <SRS0=Fowb=OY=kvack.org=owner-linux-mm@kernel.org> DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 6250761373 From: "Matthew Wilcox (Oracle)" <willy@infradead.org> To: linux-mm@kvack.org Cc: "Matthew Wilcox (Oracle)" <willy@infradead.org> Subject: [PATCH 53/62] mm/slub: Remove pfmemalloc_match_unsafe() Date: Mon, 4 Oct 2021 14:46:41 +0100 Message-Id: <20211004134650.4031813-54-willy@infradead.org> In-Reply-To: <20211004134650.4031813-1-willy@infradead.org> References: <20211004134650.4031813-1-willy@infradead.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Sender: owner-linux-mm@kvack.org Precedence: bulk
Series	Separate struct slab from struct page \| expand [00/62] Separate struct slab from struct page [01/62] mm: Convert page_to_section() to pgflags_section() [02/62] mm: Add pgflags_nid() [03/62] mm: Split slab into its own type [04/62] mm: Add account_slab() and unaccount_slab() [05/62] mm: Convert virt_to_cache() to use struct slab [06/62] mm: Convert __ksize() to struct slab [07/62] mm: Use struct slab in kmem_obj_info() [08/62] mm: Convert check_heap_object() to use struct slab [09/62] mm/slub: Convert process_slab() to take a struct slab [10/62] mm/slub: Convert detached_freelist to use a struct slab [11/62] mm/slub: Convert kfree() to use a struct slab [12/62] mm/slub: Convert __slab_free() to take a struct slab [13/62] mm/slub: Convert new_slab() to return a struct slab [14/62] mm/slub: Convert early_kmem_cache_node_alloc() to use struct slab [15/62] mm/slub: Convert kmem_cache_cpu to struct slab [16/62] mm/slub: Convert show_slab_objects() to struct slab [17/62] mm/slub: Convert validate_slab() to take a struct slab [18/62] mm/slub: Convert count_partial() to struct slab [19/62] mm/slub: Convert bootstrap() to struct slab [20/62] mm/slub: Convert __kmem_cache_do_shrink() to struct slab [21/62] mm/slub: Convert free_partial() to use struct slab [22/62] mm/slub: Convert list_slab_objects() to take a struct slab [23/62] mm/slub: Convert slab_alloc_node() to use a struct slab [24/62] mm/slub: Convert get_freelist() to take a struct slab [25/62] mm/slub: Convert node_match() to take a struct slab [26/62] mm/slub: Convert slab flushing to struct slab [27/62] mm/slub: Convert __unfreeze_partials to take a struct slab [28/62] mm/slub: Convert deactivate_slab() to take a struct slab [29/62] mm/slub: Convert acquire_slab() to take a struct page [30/62] mm/slub: Convert partial slab management to struct slab [31/62] mm/slub: Convert slab freeing to struct slab [32/62] mm/slub: Convert shuffle_freelist to struct slab [33/62] mm/slub: Remove struct page argument to next_freelist_entry() [34/62] mm/slub: Remove struct page argument from setup_object() [35/62] mm/slub: Convert freelist_corrupted() to struct slab [36/62] mm/slub: Convert full slab management to struct slab [37/62] mm/slub: Convert free_consistency_checks() to take a struct slab [38/62] mm/slub: Convert alloc_debug_processing() to struct slab [39/62] mm/slub: Convert check_object() to struct slab [40/62] mm/slub: Convert on_freelist() to struct slab [41/62] mm/slub: Convert check_slab() to struct slab [42/62] mm/slub: Convert check_valid_pointer() to struct slab [43/62] mm/slub: Convert object_err() to take a struct slab [44/62] mm/slub: Convert print_trailer() to struct slab [45/62] mm/slub: Convert slab_err() to take a struct slab [46/62] mm/slub: Convert print_page_info() to print_slab_info() [47/62] mm/slub: Convert trace() to take a struct slab [48/62] mm/slub: Convert cmpxchg_double_slab to struct slab [49/62] mm/slub: Convert get_map() and __fill_map() to struct slab [50/62] mm/slub: Convert slab_lock() and slab_unlock() to struct slab [51/62] mm/slub: Convert setup_page_debug() to setup_slab_debug() [52/62] mm/slub: Convert pfmemalloc_match() to take a struct slab [53/62] mm/slub: Remove pfmemalloc_match_unsafe() [54/62] mm: Convert slab to use struct slab [55/62] mm: Convert slob to use struct slab [56/62] mm: Convert slub to use struct slab [57/62] memcg: Convert object cgroups from struct page to struct slab [58/62] mm/kasan: Convert to struct slab [59/62] zsmalloc: Stop using slab fields in struct page [60/62] bootmem: Use page->index instead of page->freelist [61/62] iommu: Use put_pages_list [62/62] mm: Remove slab from struct page

Message ID

20211004134650.4031813-54-willy@infradead.org (mailing list archive)

State

New

Headers

DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 6250761373
From: "Matthew Wilcox (Oracle)" <willy@infradead.org>
To: linux-mm@kvack.org
Cc: "Matthew Wilcox (Oracle)" <willy@infradead.org>
Subject: [PATCH 53/62] mm/slub: Remove pfmemalloc_match_unsafe()
Date: Mon,  4 Oct 2021 14:46:41 +0100
Message-Id: <20211004134650.4031813-54-willy@infradead.org>
In-Reply-To: <20211004134650.4031813-1-willy@infradead.org>
References: <20211004134650.4031813-1-willy@infradead.org>
MIME-Version: 1.0
Content-Transfer-Encoding: quoted-printable
Sender: owner-linux-mm@kvack.org
Precedence: bulk

Series

Separate struct slab from struct page | expand

Commit Message

Matthew Wilcox Oct. 4, 2021, 1:46 p.m. UTC

slab_test_pfmemalloc() doesn't need to check PageSlab() (unlike
PageSlabPfmemalloc()), so we don't need a pfmemalloc_match_unsafe()
variant any more.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
---
 mm/slub.c | 15 +--------------
 1 file changed, 1 insertion(+), 14 deletions(-)

diff --git a/mm/slub.c b/mm/slub.c
index 7e2c5342196a..229fc56809c2 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -2796,19 +2796,6 @@  static inline bool pfmemalloc_match(struct slab *slab, gfp_t gfpflags)
 	return true;
 }
 
-/*
- * A variant of pfmemalloc_match() that tests page flags without asserting
- * PageSlab. Intended for opportunistic checks before taking a lock and
- * rechecking that nobody else freed the page under us.
- */
-static inline bool pfmemalloc_match_unsafe(struct page *page, gfp_t gfpflags)
-{
-	if (unlikely(__PageSlabPfmemalloc(page)))
-		return gfp_pfmemalloc_allowed(gfpflags);
-
-	return true;
-}
-
 /*
  * Check the freelist of a slab and either transfer the freelist to the
  * per cpu freelist or deactivate the slab
@@ -2905,7 +2892,7 @@  static void *___slab_alloc(struct kmem_cache *s, gfp_t gfpflags, int node,
 	 * PFMEMALLOC but right now, we lose the pfmemalloc
 	 * information when the page leaves the per-cpu allocator
 	 */
-	if (unlikely(!pfmemalloc_match_unsafe(slab_page(slab), gfpflags)))
+	if (unlikely(!pfmemalloc_match(slab, gfpflags)))
 		goto deactivate_slab;
 
 	/* must check again c->slab in case we got preempted and it changed */

[53/62] mm/slub: Remove pfmemalloc_match_unsafe()

Commit Message

Patch