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Mike Rapoport (Microsoft) 6ab703034f userfaultfd: mfill_atomic(): remove retry logic 
Since __mfill_atomic_pte() handles the retry for both anonymous and shmem,
there is no need to retry copying the date from the userspace in the loop
in mfill_atomic().

Drop the retry logic from mfill_atomic().

[rppt@kernel.org: remove safety measure of not returning ENOENT from _copy]
  Link: https://lore.kernel.org/ac5zcDUY8CFHr6Lw@kernel.org
Link: https://lore.kernel.org/20260402041156.1377214-12-rppt@kernel.org
Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Andrei Vagin <avagin@google.com>
Cc: Axel Rasmussen <axelrasmussen@google.com>
Cc: Baolin Wang <baolin.wang@linux.alibaba.com>
Cc: David Hildenbrand (Arm) <david@kernel.org>
Cc: Harry Yoo <harry.yoo@oracle.com>
Cc: Harry Yoo (Oracle) <harry@kernel.org>
Cc: Hugh Dickins <hughd@google.com>
Cc: James Houghton <jthoughton@google.com>
Cc: Liam Howlett <liam.howlett@oracle.com>
Cc: Lorenzo Stoakes (Oracle) <ljs@kernel.org>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Muchun Song <muchun.song@linux.dev>
Cc: Nikita Kalyazin <kalyazin@amazon.com>
Cc: Oscar Salvador <osalvador@suse.de>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Peter Xu <peterx@redhat.com>
Cc: Sean Christopherson <seanjc@google.com>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: David Carlier <devnexen@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
 		2026-04-18 00:10:54 -07:00
..
damon mm/damon/core: use time_in_range_open() for damos quota window start 2026-04-18 00:10:51 -07:00
kasan kasan: fix bug type classification for SW_TAGS mode 2026-04-05 13:53:18 -07:00
kfence kfence: add kfence.fault parameter 2026-04-05 13:53:06 -07:00
kmsan Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
tests
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Kconfig mm: introduce CONFIG_NUMA_MIGRATION and simplify CONFIG_MIGRATION 2026-04-05 13:53:33 -07:00
Kconfig.debug mm: kmemleak: add CONFIG_DEBUG_KMEMLEAK_VERBOSE build option 2026-04-18 00:10:48 -07:00
Makefile
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backing-dev.c treewide: Replace kmalloc with kmalloc_obj for non-scalar types 2026-02-21 01:02:28 -08:00
balloon.c
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bootmem_info.c mm/bootmem_info: avoid using sparse_decode_mem_map() 2026-04-05 13:53:32 -07:00
bpf_memcontrol.c
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cma.c mm/cma: move put_page_testzero() out of VM_WARN_ON in cma_release() 2026-03-04 09:44:22 -08:00
cma.h
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cma_debug.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
cma_sysfs.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
compaction.c mm: memcontrol: prepare for reparenting LRU pages for lruvec lock 2026-04-18 00:10:46 -07:00
debug.c
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debug_page_alloc.c
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debug_page_ref.c
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debug_vm_pgtable.c mm/debug_vm_pgtable: replace WRITE_ONCE() with pxd_clear() 2026-04-05 13:53:11 -07:00
dmapool.c
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dmapool_test.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
early_ioremap.c
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execmem.c mm/execmem: make the populate and alloc atomic 2026-04-05 13:53:34 -07:00
fadvise.c mm/fadvise: validate offset in generic_fadvise 2026-04-05 13:52:53 -07:00
fail_page_alloc.c
…
failslab.c
…
filemap.c folio_batch: rename pagevec.h to folio_batch.h 2026-04-05 13:53:07 -07:00
folio-compat.c
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gup.c folio_batch: rename pagevec.h to folio_batch.h 2026-04-05 13:53:07 -07:00
gup_test.c
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gup_test.h
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highmem.c
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hmm.c treewide: Replace kmalloc with kmalloc_obj for non-scalar types 2026-02-21 01:02:28 -08:00
huge_memory.c mm: thp: prevent memory cgroup release in folio_split_queue_lock{_irqsave}() 2026-04-18 00:10:46 -07:00
hugetlb.c userfaultfd: introduce vm_uffd_ops 2026-04-18 00:10:53 -07:00
hugetlb_cgroup.c Convert 'alloc_flex' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
hugetlb_cma.c
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hugetlb_cma.h
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hugetlb_internal.h
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hugetlb_sysctl.c
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hugetlb_sysfs.c
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hugetlb_vmemmap.c mm/hugetlb: remove hugetlb_optimize_vmemmap_key static key 2026-04-05 13:53:09 -07:00
hugetlb_vmemmap.h
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hwpoison-inject.c
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init-mm.c
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internal.h mm: add mmap_action_simple_ioremap() 2026-04-05 13:53:43 -07:00
interval_tree.c mm/memory: simplify calculation in unmap_mapping_range_tree() 2026-04-05 13:53:13 -07:00
ioremap.c
…
khugepaged.c mm/khugepaged: fix issue with tracking lock 2026-04-05 13:53:47 -07:00
kmemleak.c mm: kmemleak: add CONFIG_DEBUG_KMEMLEAK_VERBOSE build option 2026-04-18 00:10:48 -07:00
ksm.c mm: convert do_brk_flags() to use vma_flags_t 2026-04-05 13:53:40 -07:00
list_lru.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
maccess.c
…
madvise.c mm/vma: convert vma_modify_flags[_uffd]() to use vma_flags_t 2026-04-05 13:53:41 -07:00
mapping_dirty_helpers.c
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memblock.c kho: persist blob size in KHO FDT 2026-04-18 00:10:48 -07:00
memcontrol-v1.c mm: memcontrol: eliminate the problem of dying memory cgroup for LRU folios 2026-04-18 00:10:47 -07:00
memcontrol-v1.h mm: memcontrol: prepare for reparenting non-hierarchical stats 2026-04-18 00:10:47 -07:00
memcontrol.c mm: memcontrol: correct the nr_pages parameter type of mem_cgroup_update_lru_size() 2026-04-18 00:10:48 -07:00
memfd.c memfd: export memfd_{add,get}_seals() 2026-04-05 13:53:00 -07:00
memfd_luo.c mm/memfd_luo: remove folio from page cache when accounting fails 2026-04-18 00:10:53 -07:00
memory-failure.c treewide: Replace kmalloc with kmalloc_obj for non-scalar types 2026-02-21 01:02:28 -08:00
memory-tiers.c mm: introduce CONFIG_NUMA_MIGRATION and simplify CONFIG_MIGRATION 2026-04-05 13:53:33 -07:00
memory.c mm: on remap assert that input range within the proposed VMA 2026-04-05 13:53:45 -07:00
memory_hotplug.c mm/memory_hotplug: simplify check_pfn_span() 2026-04-05 13:53:31 -07:00
mempolicy.c mm/mempolicy: fix memory leaks in weighted_interleave_auto_store() 2026-04-18 00:10:51 -07:00
mempool.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
memremap.c
…
memtest.c
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migrate.c mm: migrate: prevent memory cgroup release in folio_migrate_mapping() 2026-04-18 00:10:45 -07:00
migrate_device.c mm/migrate_device: document folio_get requirement before frozen PMD split 2026-04-05 13:53:19 -07:00
mincore.c
…
mlock.c mm: rename unlock_page_lruvec_irq and its variants 2026-04-18 00:10:44 -07:00
mm_init.c mm: mark early-init static variables with __meminitdata 2026-04-05 13:53:34 -07:00
mm_slot.h
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mmap.c mm: convert do_brk_flags() to use vma_flags_t 2026-04-05 13:53:40 -07:00
mmap_lock.c
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mmu_gather.c mm/mmu_gather: replace IPI with synchronize_rcu() when batch allocation fails 2026-04-05 13:53:05 -07:00
mmu_notifier.c mm: change to return bool for the MMU notifier's young flag check 2026-04-05 13:53:35 -07:00
mmzone.c
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mprotect.c mm: simplify VMA flag tests of excluded flags 2026-04-05 13:53:41 -07:00
mremap.c mm: convert do_brk_flags() to use vma_flags_t 2026-04-05 13:53:40 -07:00
mseal.c mm/vma: convert vma_modify_flags[_uffd]() to use vma_flags_t 2026-04-05 13:53:41 -07:00
msync.c
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nommu.c mm: abstract reading sysctl_max_map_count, and READ_ONCE() 2026-04-05 13:53:28 -07:00
numa.c
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numa_emulation.c
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numa_memblks.c memblock: numa_memblks: fix detection of NUMA node for CXL windows 2026-02-21 09:58:22 -08:00
oom_kill.c mm/oom_kill.c: simpilfy rcu call with guard(rcu) 2026-04-05 13:53:17 -07:00
page-writeback.c mm: rename zap_vma_pages() to zap_vma() 2026-04-05 13:53:14 -07:00
page_alloc.c mm/alloc_tag: clear codetag for pages allocated before page_ext initialization 2026-04-18 00:10:50 -07:00
page_counter.c
…
page_ext.c
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page_frag_cache.c
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page_idle.c mm/page_idle.c: remove redundant mmu notifier in aging code 2026-04-05 13:53:02 -07:00
page_io.c mm: page_io: prevent memory cgroup release in page_io module 2026-04-18 00:10:45 -07:00
page_isolation.c
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page_owner.c treewide: Replace kmalloc with kmalloc_obj for non-scalar types 2026-02-21 01:02:28 -08:00
page_poison.c
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page_reporting.c mm/page_reporting: change page_reporting_order to PAGE_REPORTING_ORDER_UNSPECIFIED 2026-04-05 13:53:17 -07:00
page_reporting.h
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page_table_check.c
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page_vma_mapped.c mm: centralize+fix comments about compound_mapcount() in new sync_with_folio_pmd_zap() 2026-04-05 13:53:03 -07:00
pagewalk.c mm/pagewalk: fix race between concurrent split and refault 2026-04-05 13:53:37 -07:00
percpu-internal.h
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percpu-km.c
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percpu-stats.c
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percpu-vm.c
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percpu.c mm: memcontrol: return root object cgroup for root memory cgroup 2026-04-18 00:10:44 -07:00
pgalloc-track.h
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pgtable-generic.c mm: change to return bool for pmdp_clear_flush_young() 2026-04-05 13:53:35 -07:00
process_vm_access.c
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ptdump.c
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readahead.c
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rmap.c mm/mglru: fix cgroup OOM during MGLRU state switching 2026-04-05 13:53:33 -07:00
rodata_test.c
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secretmem.c mm: rename VMA flag helpers to be more readable 2026-04-05 13:53:18 -07:00
shmem.c shmem, userfaultfd: implement shmem uffd operations using vm_uffd_ops 2026-04-18 00:10:54 -07:00
shmem_quota.c treewide: Replace kmalloc with kmalloc_obj for non-scalar types 2026-02-21 01:02:28 -08:00
show_mem.c
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shrinker.c mm: memcontrol: remove dead code of checking parent memory cgroup 2026-04-18 00:10:44 -07:00
shrinker_debug.c
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shuffle.c
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shuffle.h
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slab.h mm/slab: use compound_head() in page_slab() 2026-04-05 13:53:10 -07:00
slab_common.c
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slub.c slab: fix memory leak when refill_sheaf() fails 2026-03-11 17:55:26 +01:00
sparse-vmemmap.c mm: mark early-init static variables with __meminitdata 2026-04-05 13:53:34 -07:00
sparse.c mm/sparse: fix preinited section_mem_map clobbering on failure path 2026-04-18 00:10:52 -07:00
swap.c mm: vmscan: prepare for reparenting traditional LRU folios 2026-04-18 00:10:46 -07:00
swap.h mm, swap: no need to clear the shadow explicitly 2026-04-05 13:52:59 -07:00
swap_cgroup.c
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swap_state.c mm/swap: fix swap cache memcg accounting 2026-04-05 13:53:37 -07:00
swap_table.h mm, swap: use the swap table to track the swap count 2026-04-05 13:52:59 -07:00
swapfile.c mm/swapfile: remove duplicate include of swap_table.h 2026-04-05 13:53:31 -07:00
truncate.c folio_batch: rename PAGEVEC_SIZE to FOLIO_BATCH_SIZE 2026-04-05 13:53:07 -07:00
usercopy.c
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userfaultfd.c userfaultfd: mfill_atomic(): remove retry logic 2026-04-18 00:10:54 -07:00
util.c mm/vma: remove __vma_check_mmap_hook() 2026-04-18 00:10:44 -07:00
vma.c mm: add vm_ops->mapped hook 2026-04-05 13:53:43 -07:00
vma.h mm: allow handling of stacked mmap_prepare hooks in more drivers 2026-04-05 13:53:44 -07:00
vma_exec.c mm: convert do_brk_flags() to use vma_flags_t 2026-04-05 13:53:40 -07:00
vma_init.c
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vma_internal.h
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vmalloc.c mm: vmalloc: update outdated comment for renamed vread() 2026-04-05 13:53:34 -07:00
vmpressure.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
vmscan.c mm/vmscan: prevent MGLRU reclaim from pinning address space 2026-04-18 00:10:50 -07:00
vmstat.c mm: vmalloc: streamline vmalloc memory accounting 2026-04-05 13:53:04 -07:00
workingset.c mm: workingset: use lruvec_lru_size() to get the number of lru pages 2026-04-18 00:10:47 -07:00
zpdesc.h
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zsmalloc.c mm/zsmalloc: copy KMSAN metadata in zs_page_migrate() 2026-04-05 13:53:34 -07:00
zswap.c mm: zswap: tie per-CPU acomp_ctx lifetime to the pool 2026-04-18 00:10:50 -07:00