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From: Andrew Morton <akpm@linux-foundation.org>
To: akpm@linux-foundation.org, huxiang@uniontech.com,
	linux-mm@kvack.org, mm-commits@vger.kernel.org,
	torvalds@linux-foundation.org
Subject: [patch 176/178] mm/page_alloc: redundant definition variables of pfn in for loop
Date: Thu, 29 Apr 2021 23:02:13 -0700	[thread overview]
Message-ID: <20210430060213.LF6PpC21W%akpm@linux-foundation.org> (raw)
In-Reply-To: <20210429225251.02b6386d21b69255b4f6c163@linux-foundation.org>

From: huxiang <huxiang@uniontech.com>
Subject: mm/page_alloc: redundant definition variables of pfn in for loop

This variable pfn is defined repeatedly, so it can be deleted.

Link: https://lkml.kernel.org/r/20210401022802.10358-1-huxiang@uniontech.com
Signed-off-by: huxiang <huxiang@uniontech.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 mm/page_alloc.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/mm/page_alloc.c~mm-page_alloc-redundant-definition-variables-of-pfn-in-for-loop
+++ a/mm/page_alloc.c
@@ -3322,7 +3322,7 @@ void free_unref_page_list(struct list_he
 
 	local_irq_save(flags);
 	list_for_each_entry_safe(page, next, list, lru) {
-		unsigned long pfn = page_private(page);
+		pfn = page_private(page);
 
 		set_page_private(page, 0);
 		trace_mm_page_free_batched(page);
_

  parent reply	other threads:[~2021-04-30  6:02 UTC|newest]

Thread overview: 189+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-04-30  5:52 incoming Andrew Morton
2021-04-30  5:53 ` [patch 001/178] arch/ia64/kernel/head.S: remove duplicate include Andrew Morton
2021-04-30  5:53 ` [patch 002/178] arch/ia64/kernel/fsys.S: fix typos Andrew Morton
2021-04-30  5:53 ` [patch 003/178] arch/ia64/include/asm/pgtable.h: minor typo fixes Andrew Morton
2021-04-30  5:53 ` [patch 004/178] ia64: ensure proper NUMA distance and possible map initialization Andrew Morton
2021-04-30  5:53 ` [patch 005/178] ia64: drop unused IA64_FW_EMU ifdef Andrew Morton
2021-04-30  5:53 ` [patch 006/178] ia64: simplify code flow around swiotlb init Andrew Morton
2021-04-30  5:53 ` [patch 007/178] ia64: trivial spelling fixes Andrew Morton
2021-04-30  5:53 ` [patch 008/178] ia64: fix EFI_DEBUG build Andrew Morton
2021-04-30  5:53 ` [patch 009/178] ia64: mca: always make IA64_MCA_DEBUG an expression Andrew Morton
2021-04-30  5:53 ` [patch 010/178] ia64: drop marked broken DISCONTIGMEM and VIRTUAL_MEM_MAP Andrew Morton
2021-04-30  5:53 ` [patch 011/178] ia64: module: fix symbolizer crash on fdescr Andrew Morton
2021-04-30  5:53 ` [patch 012/178] include/linux/compiler-gcc.h: sparse can do constant folding of __builtin_bswap*() Andrew Morton
2021-04-30  5:53 ` [patch 013/178] scripts/spelling.txt: add entries for recent discoveries Andrew Morton
2021-04-30  5:53 ` [patch 014/178] scripts: a new script for checking duplicate struct declaration Andrew Morton
2021-04-30  5:53 ` [patch 015/178] arch/sh/include/asm/tlb.h: remove duplicate include Andrew Morton
2021-04-30  5:54 ` [patch 016/178] ocfs2: replace DEFINE_SIMPLE_ATTRIBUTE with DEFINE_DEBUGFS_ATTRIBUTE Andrew Morton
2021-04-30  5:54 ` [patch 017/178] ocfs2: map flags directly in flags_to_o2dlm() Andrew Morton
2021-04-30  5:54 ` [patch 018/178] ocfs2: fix a typo Andrew Morton
2021-04-30  5:54 ` [patch 019/178] ocfs2/dlm: remove unused function Andrew Morton
2021-04-30  5:54 ` [patch 020/178] kfifo: fix ternary sign extension bugs Andrew Morton
2021-04-30  5:54 ` [patch 021/178] vfs: fs_parser: clean up kernel-doc warnings Andrew Morton
2021-04-30  5:54 ` [patch 022/178] watchdog: rename __touch_watchdog() to a better descriptive name Andrew Morton
2021-04-30  5:54 ` [patch 023/178] watchdog: explicitly update timestamp when reporting softlockup Andrew Morton
2021-04-30  5:54 ` [patch 024/178] watchdog/softlockup: report the overall time of softlockups Andrew Morton
2021-04-30  5:54 ` [patch 025/178] watchdog/softlockup: remove logic that tried to prevent repeated reports Andrew Morton
2021-04-30  5:54 ` [patch 026/178] watchdog: fix barriers when printing backtraces from all CPUs Andrew Morton
2021-04-30  5:54 ` [patch 027/178] watchdog: cleanup handling of false positives Andrew Morton
2021-04-30  5:54 ` [patch 028/178] mm/slab_common: provide "slab_merge" option for !IS_ENABLED(CONFIG_SLAB_MERGE_DEFAULT) builds Andrew Morton
2021-04-30  5:54 ` [patch 029/178] mm, slub: enable slub_debug static key when creating cache with explicit debug flags Andrew Morton
2021-04-30  5:54 ` [patch 030/178] kunit: add a KUnit test for SLUB debugging functionality Andrew Morton
2021-04-30  8:50   ` Vlastimil Babka
2021-04-30 16:31     ` Linus Torvalds
2021-04-30  5:54 ` [patch 031/178] slub: remove resiliency_test() function Andrew Morton
2021-04-30  5:54 ` [patch 032/178] mm/slub.c: trivial typo fixes Andrew Morton
2021-04-30  5:54 ` [patch 033/178] mm/kmemleak.c: fix a typo Andrew Morton
2021-04-30  5:54 ` [patch 034/178] mm/page_owner: record the timestamp of all pages during free Andrew Morton
2021-04-30  5:55 ` [patch 035/178] mm, page_owner: remove unused parameter in __set_page_owner_handle Andrew Morton
2021-04-30  5:55 ` [patch 036/178] mm: page_owner: fetch backtrace only for tracked pages Andrew Morton
2021-04-30  5:55 ` [patch 037/178] mm: page_owner: use kstrtobool() to parse bool option Andrew Morton
2021-04-30  5:55 ` [patch 038/178] mm: page_owner: detect page_owner recursion via task_struct Andrew Morton
2021-04-30  5:55 ` [patch 039/178] mm: page_poison: print page info when corruption is caught Andrew Morton
2021-04-30  5:55 ` [patch 040/178] mm/memtest: add ARCH_USE_MEMTEST Andrew Morton
2021-04-30  5:55 ` [patch 041/178] mm: provide filemap_range_needs_writeback() helper Andrew Morton
2021-04-30 16:50   ` Linus Torvalds
2021-05-09 19:40     ` Matthew Wilcox
2021-04-30  5:55 ` [patch 042/178] mm: use filemap_range_needs_writeback() for O_DIRECT reads Andrew Morton
2021-04-30  5:55 ` [patch 043/178] iomap: " Andrew Morton
2021-04-30  5:55 ` [patch 044/178] mm/filemap: use filemap_read_page in filemap_fault Andrew Morton
2021-04-30  5:55 ` [patch 045/178] mm/filemap: drop check for truncated page after I/O Andrew Morton
2021-04-30  5:55 ` [patch 046/178] mm: page-writeback: simplify memcg handling in test_clear_page_writeback() Andrew Morton
2021-04-30  5:55 ` [patch 047/178] mm: move page_mapping_file to pagemap.h Andrew Morton
2021-04-30  5:55 ` [patch 048/178] mm/filemap: update stale comment Andrew Morton
2021-04-30  5:55 ` [patch 049/178] mm/msync: exit early when the flags is an MS_ASYNC and start < vm_start Andrew Morton
2021-04-30  5:55 ` [patch 050/178] mm/gup: add compound page list iterator Andrew Morton
2021-04-30  5:55 ` [patch 051/178] mm/gup: decrement head page once for group of subpages Andrew Morton
2021-04-30  5:55 ` [patch 052/178] mm/gup: add a range variant of unpin_user_pages_dirty_lock() Andrew Morton
2021-04-30  5:55 ` [patch 053/178] RDMA/umem: batch page unpin in __ib_umem_release() Andrew Morton
2021-04-30  5:55 ` [patch 054/178] mm: gup: remove FOLL_SPLIT Andrew Morton
2021-04-30  5:55 ` [patch 055/178] mm/memremap.c: fix improper SPDX comment style Andrew Morton
2021-04-30  5:56 ` [patch 056/178] mm: memcontrol: fix kernel stack account Andrew Morton
2021-04-30  5:56 ` [patch 057/178] memcg: cleanup root memcg checks Andrew Morton
2021-04-30  5:56 ` [patch 058/178] memcg: enable memcg oom-kill for __GFP_NOFAIL Andrew Morton
2021-04-30  5:56 ` [patch 059/178] mm: memcontrol: fix cpuhotplug statistics flushing Andrew Morton
2021-04-30  5:56 ` [patch 060/178] mm: memcontrol: kill mem_cgroup_nodeinfo() Andrew Morton
2021-04-30  5:56 ` [patch 061/178] mm: memcontrol: privatize memcg_page_state query functions Andrew Morton
2021-04-30  5:56 ` [patch 062/178] cgroup: rstat: support cgroup1 Andrew Morton
2021-04-30  5:56 ` [patch 063/178] cgroup: rstat: punt root-level optimization to individual controllers Andrew Morton
2021-04-30  5:56 ` [patch 064/178] mm: memcontrol: switch to rstat Andrew Morton
2021-04-30  5:56 ` [patch 065/178] mm: memcontrol: consolidate lruvec stat flushing Andrew Morton
2021-04-30  5:56 ` [patch 066/178] kselftests: cgroup: update kmem test for new vmstat implementation Andrew Morton
2021-04-30  5:56 ` [patch 067/178] memcg: charge before adding to swapcache on swapin Andrew Morton
2021-04-30  5:56 ` [patch 068/178] mm: memcontrol: slab: fix obtain a reference to a freeing memcg Andrew Morton
2021-04-30  5:56 ` [patch 069/178] mm: memcontrol: introduce obj_cgroup_{un}charge_pages Andrew Morton
2021-04-30  5:56 ` [patch 070/178] mm: memcontrol: directly access page->memcg_data in mm/page_alloc.c Andrew Morton
2021-04-30  5:56 ` [patch 071/178] mm: memcontrol: change ug->dummy_page only if memcg changed Andrew Morton
2021-04-30  5:56 ` [patch 072/178] mm: memcontrol: use obj_cgroup APIs to charge kmem pages Andrew Morton
2021-04-30  5:56 ` [patch 073/178] mm: memcontrol: inline __memcg_kmem_{un}charge() into obj_cgroup_{un}charge_pages() Andrew Morton
2021-04-30  5:56 ` [patch 074/178] mm: memcontrol: move PageMemcgKmem to the scope of CONFIG_MEMCG_KMEM Andrew Morton
2021-04-30  5:57 ` [patch 075/178] linux/memcontrol.h: remove duplicate struct declaration Andrew Morton
2021-04-30  5:57 ` [patch 076/178] mm: page_counter: mitigate consequences of a page_counter underflow Andrew Morton
2021-04-30  5:57 ` [patch 077/178] mm/memory.c: do_numa_page(): delete bool "migrated" Andrew Morton
2021-04-30  5:57 ` [patch 078/178] mm/interval_tree: add comments to improve code readability Andrew Morton
2021-04-30  5:57 ` [patch 079/178] x86/vmemmap: drop handling of 4K unaligned vmemmap range Andrew Morton
2021-04-30  5:57 ` [patch 080/178] x86/vmemmap: drop handling of 1GB vmemmap ranges Andrew Morton
2021-04-30  5:57 ` [patch 081/178] x86/vmemmap: handle unpopulated sub-pmd ranges Andrew Morton
2021-04-30  5:57 ` [patch 082/178] x86/vmemmap: optimize for consecutive sections in partial populated PMDs Andrew Morton
2021-04-30  5:57 ` [patch 083/178] mm, tracing: improve rss_stat tracepoint message Andrew Morton
2021-04-30  5:57 ` [patch 084/178] mm: add remap_pfn_range_notrack Andrew Morton
2021-04-30  5:57 ` [patch 085/178] mm: add a io_mapping_map_user helper Andrew Morton
2021-04-30  5:57 ` [patch 086/178] i915: use io_mapping_map_user Andrew Morton
2021-04-30  5:57 ` [patch 087/178] i915: fix remap_io_sg to verify the pgprot Andrew Morton
2021-04-30  5:57 ` [patch 088/178] NUMA balancing: reduce TLB flush via delaying mapping on hint page fault Andrew Morton
2021-04-30  5:57 ` [patch 089/178] mm: extend MREMAP_DONTUNMAP to non-anonymous mappings Andrew Morton
2021-04-30  5:57 ` [patch 090/178] Revert "mremap: don't allow MREMAP_DONTUNMAP on special_mappings and aio" Andrew Morton
2021-04-30  5:57 ` [patch 091/178] selftests: add a MREMAP_DONTUNMAP selftest for shmem Andrew Morton
2021-04-30  5:57 ` [patch 092/178] mm/dmapool: switch from strlcpy to strscpy Andrew Morton
2021-04-30  5:57 ` [patch 093/178] mm/sparse: add the missing sparse_buffer_fini() in error branch Andrew Morton
2021-04-30  5:58 ` [patch 094/178] samples/vfio-mdev/mdpy: use remap_vmalloc_range Andrew Morton
2021-04-30  5:58 ` [patch 095/178] mm: unexport remap_vmalloc_range_partial Andrew Morton
2021-04-30  5:58 ` [patch 096/178] mm/vmalloc: use rb_tree instead of list for vread() lookups Andrew Morton
2021-04-30  5:58 ` [patch 097/178] ARM: mm: add missing pud_page define to 2-level page tables Andrew Morton
2021-04-30  5:58 ` [patch 098/178] mm/vmalloc: fix HUGE_VMAP regression by enabling huge pages in vmalloc_to_page Andrew Morton
2021-04-30  5:58 ` [patch 099/178] mm: apply_to_pte_range warn and fail if a large pte is encountered Andrew Morton
2021-04-30  5:58 ` [patch 100/178] mm/vmalloc: rename vmap_*_range vmap_pages_*_range Andrew Morton
2021-04-30  5:58 ` [patch 101/178] mm/ioremap: rename ioremap_*_range to vmap_*_range Andrew Morton
2021-04-30  5:58 ` [patch 102/178] mm: HUGE_VMAP arch support cleanup Andrew Morton
2021-04-30  5:58 ` [patch 103/178] powerpc: inline huge vmap supported functions Andrew Morton
2021-04-30  5:58 ` [patch 104/178] arm64: " Andrew Morton
2021-04-30  5:58 ` [patch 105/178] x86: " Andrew Morton
2021-04-30  5:58 ` [patch 106/178] mm/vmalloc: provide fallback arch huge vmap support functions Andrew Morton
2021-04-30  5:58 ` [patch 107/178] mm: move vmap_range from mm/ioremap.c to mm/vmalloc.c Andrew Morton
2021-04-30  5:58 ` [patch 108/178] mm/vmalloc: add vmap_range_noflush variant Andrew Morton
2021-04-30  5:58 ` [patch 109/178] mm/vmalloc: hugepage vmalloc mappings Andrew Morton
2021-04-30  5:58 ` [patch 110/178] mm/vmalloc: remove map_kernel_range Andrew Morton
2021-04-30  5:58 ` [patch 111/178] kernel/dma: remove unnecessary unmap_kernel_range Andrew Morton
2021-04-30  5:58 ` [patch 112/178] powerpc/xive: " Andrew Morton
2021-04-30  5:59 ` [patch 113/178] mm/vmalloc: remove unmap_kernel_range Andrew Morton
2021-04-30  5:59 ` [patch 114/178] mm/vmalloc: improve allocation failure error messages Andrew Morton
2021-04-30  5:59 ` [patch 115/178] mm: vmalloc: prevent use after free in _vm_unmap_aliases Andrew Morton
2021-04-30  5:59 ` [patch 116/178] lib/test_vmalloc.c: remove two kvfree_rcu() tests Andrew Morton
2021-04-30  5:59 ` [patch 117/178] lib/test_vmalloc.c: add a new 'nr_threads' parameter Andrew Morton
2021-04-30  5:59 ` [patch 118/178] vm/test_vmalloc.sh: adapt for updated driver interface Andrew Morton
2021-04-30  5:59 ` [patch 119/178] mm/vmalloc: refactor the preloading loagic Andrew Morton
2021-04-30  5:59 ` [patch 120/178] mm/vmalloc: remove an empty line Andrew Morton
2021-04-30  5:59 ` [patch 121/178] mm/doc: fix fault_flag_allow_retry_first kerneldoc Andrew Morton
2021-04-30  5:59 ` [patch 122/178] mm/doc: fix page_maybe_dma_pinned kerneldoc Andrew Morton
2021-04-30  5:59 ` [patch 123/178] mm/doc: turn fault flags into an enum Andrew Morton
2021-04-30  5:59 ` [patch 124/178] mm/doc: add mm.h and mm_types.h to the mm-api document Andrew Morton
2021-04-30  5:59 ` [patch 125/178] MAINTAINERS: assign pagewalk.h to MEMORY MANAGEMENT Andrew Morton
2021-04-30  5:59 ` [patch 126/178] pagewalk: prefix struct kernel-doc descriptions Andrew Morton
2021-04-30  5:59 ` [patch 127/178] mm/kasan: switch from strlcpy to strscpy Andrew Morton
2021-04-30  5:59 ` [patch 128/178] kasan: fix kasan_byte_accessible() to be consistent with actual checks Andrew Morton
2021-04-30  5:59 ` [patch 129/178] kasan: initialize shadow to TAG_INVALID for SW_TAGS Andrew Morton
2021-04-30  5:59 ` [patch 130/178] mm, kasan: don't poison boot memory with tag-based modes Andrew Morton
2021-04-30  5:59 ` [patch 131/178] arm64: kasan: allow to init memory when setting tags Andrew Morton
2021-04-30  5:59 ` [patch 132/178] kasan: init memory in kasan_(un)poison for HW_TAGS Andrew Morton
2021-04-30  6:00 ` [patch 133/178] kasan, mm: integrate page_alloc init with HW_TAGS Andrew Morton
2021-04-30  6:00 ` [patch 134/178] kasan, mm: integrate slab init_on_alloc " Andrew Morton
2021-04-30  6:00 ` [patch 135/178] kasan, mm: integrate slab init_on_free " Andrew Morton
2021-04-30  6:00 ` [patch 136/178] kasan: docs: clean up sections Andrew Morton
2021-04-30  6:00 ` [patch 137/178] kasan: docs: update overview section Andrew Morton
2021-04-30  6:00 ` [patch 138/178] kasan: docs: update usage section Andrew Morton
2021-04-30  6:00 ` [patch 139/178] kasan: docs: update error reports section Andrew Morton
2021-04-30  6:00 ` [patch 140/178] kasan: docs: update boot parameters section Andrew Morton
2021-04-30  6:00 ` [patch 141/178] kasan: docs: update GENERIC implementation details section Andrew Morton
2021-04-30  6:00 ` [patch 142/178] kasan: docs: update SW_TAGS " Andrew Morton
2021-04-30  6:00 ` [patch 143/178] kasan: docs: update HW_TAGS " Andrew Morton
2021-04-30  6:00 ` [patch 144/178] kasan: docs: update shadow memory section Andrew Morton
2021-04-30  6:00 ` [patch 145/178] kasan: docs: update ignoring accesses section Andrew Morton
2021-04-30  6:00 ` [patch 146/178] kasan: docs: update tests section Andrew Morton
2021-04-30  6:00 ` [patch 147/178] kasan: record task_work_add() call stack Andrew Morton
2021-04-30  6:00 ` [patch 148/178] kasan: detect false-positives in tests Andrew Morton
2021-04-30 18:32   ` Linus Torvalds
2021-05-02 18:04     ` Andrew Morton
2021-05-02 19:08       ` Linus Torvalds
2021-05-03 18:44         ` Andrew Morton
2021-04-30  6:00 ` [patch 149/178] irq_work: record irq_work_queue() call stack Andrew Morton
2021-04-30  6:00 ` [patch 150/178] mm: move mem_init_print_info() into mm_init() Andrew Morton
2021-04-30  6:00 ` [patch 151/178] mm/page_alloc: drop pr_info_ratelimited() in alloc_contig_range() Andrew Morton
2021-04-30  6:01 ` [patch 152/178] mm: remove lru_add_drain_all in alloc_contig_range Andrew Morton
2021-04-30  6:01 ` [patch 153/178] include/linux/page-flags-layout.h: correctly determine LAST_CPUPID_WIDTH Andrew Morton
2021-04-30  6:01 ` [patch 154/178] include/linux/page-flags-layout.h: cleanups Andrew Morton
2021-04-30  6:01 ` [patch 155/178] mm/page_alloc: rename alloc_mask to alloc_gfp Andrew Morton
2021-04-30  6:01 ` [patch 156/178] mm/page_alloc: rename gfp_mask to gfp Andrew Morton
2021-04-30  6:01 ` [patch 157/178] mm/page_alloc: combine __alloc_pages and __alloc_pages_nodemask Andrew Morton
2021-04-30  6:01 ` [patch 158/178] mm/mempolicy: rename alloc_pages_current to alloc_pages Andrew Morton
2021-04-30  6:01 ` [patch 159/178] mm/mempolicy: rewrite alloc_pages documentation Andrew Morton
2021-04-30  6:01 ` [patch 160/178] mm/mempolicy: rewrite alloc_pages_vma documentation Andrew Morton
2021-04-30  6:01 ` [patch 161/178] mm/mempolicy: fix mpol_misplaced kernel-doc Andrew Morton
2021-04-30  6:01 ` [patch 162/178] mm: page_alloc: dump migrate-failed pages Andrew Morton
2021-05-02  3:10   ` jim.cromie
2021-04-30  6:01 ` [patch 163/178] mm/Kconfig: remove default DISCONTIGMEM_MANUAL Andrew Morton
2021-04-30  6:01 ` [patch 164/178] mm, page_alloc: avoid page_to_pfn() in move_freepages() Andrew Morton
2021-04-30  6:01 ` [patch 165/178] mm/page_alloc: duplicate include linux/vmalloc.h Andrew Morton
2021-04-30  6:01 ` [patch 166/178] mm/page_alloc: rename alloced to allocated Andrew Morton
2021-04-30  6:01 ` [patch 167/178] mm/page_alloc: add a bulk page allocator Andrew Morton
2021-04-30  6:01 ` [patch 168/178] mm/page_alloc: add an array-based interface to the " Andrew Morton
2021-04-30  6:01 ` [patch 169/178] mm/page_alloc: optimize code layout for __alloc_pages_bulk Andrew Morton
2021-04-30  6:01 ` [patch 170/178] mm/page_alloc: inline __rmqueue_pcplist Andrew Morton
2021-04-30  6:01 ` [patch 171/178] SUNRPC: set rq_page_end differently Andrew Morton
2021-04-30  6:02 ` [patch 172/178] SUNRPC: refresh rq_pages using a bulk page allocator Andrew Morton
2021-04-30  6:02 ` [patch 173/178] net: page_pool: refactor dma_map into own function page_pool_dma_map Andrew Morton
2021-04-30  6:02 ` [patch 174/178] net: page_pool: use alloc_pages_bulk in refill code path Andrew Morton
2021-04-30  6:02 ` [patch 175/178] mm: page_alloc: ignore init_on_free=1 for debug_pagealloc=1 Andrew Morton
2021-04-30  6:02 ` Andrew Morton [this message]
2021-04-30 17:10   ` [patch 176/178] mm/page_alloc: redundant definition variables of pfn in for loop Linus Torvalds
2021-04-30  6:02 ` [patch 177/178] mm/mmzone.h: fix existing kernel-doc comments and link them to core-api Andrew Morton
2021-04-30  6:02 ` [patch 178/178] mm/memory-failure: unnecessary amount of unmapping Andrew Morton

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