Matthew Wilcox (Oracle) b9ff43dd27 mm/readahead: Fix readahead with large folios ... Reading 100KB chunks from a big file (eg dd bs=100K) leads to poor readahead behaviour. Studying the traces in detail, I noticed two problems. The first is that we were setting the readahead flag on the folio which contains the last byte read from the block. This is wrong because we will trigger readahead at the end of the read without waiting to see if a subsequent read is going to use the pages we just read. Instead, we need to set the readahead flag on the first folio _after_ the one which contains the last byte that we're reading. The second is that we were looking for the index of the folio with the readahead flag set to exactly match the start + size - async_size. If we've rounded this, either down (as previously) or up (as now), we'll think we hit a folio marked as readahead by a different read, and try to read the wrong pages. So round the expected index to the order of the folio we hit. Reported-by: Guo Xuenan <guoxuenan@huawei.com> Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>		2022-05-05 00:47:29 -04:00
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damon	mm/damon: prevent activated scheme from sleeping by deactivated schemes	2022-04-01 11:46:09 -07:00
kasan	kasan: prevent cpu_quarantine corruption when CPU offline and cache shrink occur at same time	2022-04-27 13:28:48 -07:00
kfence	mm, kfence: support kmem_dump_obj() for KFENCE objects	2022-04-15 14:49:55 -07:00
Kconfig	…
Kconfig.debug	…
Makefile	…
backing-dev.c	…
balloon_compaction.c	mm/balloon_compaction: make balloon page compaction callbacks static	2022-03-28 16:52:57 -04:00
bootmem_info.c	…
cma.c	…
cma.h	…
cma_debug.c	…
cma_sysfs.c	…
compaction.c	mm: compaction: fix compiler warning when CONFIG_COMPACTION=n	2022-04-15 14:49:55 -07:00
debug.c	…
debug_page_ref.c	…
debug_vm_pgtable.c	…
dmapool.c	…
early_ioremap.c	…
fadvise.c	…
failslab.c	…
filemap.c	tmpfs: fix regressions from wider use of ZERO_PAGE	2022-04-15 14:49:54 -07:00
folio-compat.c	…
frontswap.c	…
gup.c	mm/munlock: add lru_add_drain() to fix memcg_stat_test	2022-04-01 11:46:09 -07:00
gup_test.c	…
gup_test.h	…
highmem.c	highmem: fix checks in __kmap_local_sched_{in,out}	2022-04-08 14:20:36 -10:00
hmm.c	…
huge_memory.c	mm/huge_memory: Avoid calling pmd_page() on a non-leaf PMD	2022-04-07 09:43:41 -04:00
hugetlb.c	mm/hwpoison: fix race between hugetlb free/demotion and memory_failure_hugetlb()	2022-04-21 20:01:09 -07:00
hugetlb_cgroup.c	…
hugetlb_vmemmap.c	…
hugetlb_vmemmap.h	…
hwpoison-inject.c	…
init-mm.c	…
internal.h	mm/munlock: protect the per-CPU pagevec by a local_lock_t	2022-04-01 11:46:09 -07:00
interval_tree.c	…
io-mapping.c	…
ioremap.c	…
khugepaged.c	…
kmemleak.c	mm: kmemleak: take a full lowmem check in kmemleak_*_phys()	2022-04-15 14:49:56 -07:00
ksm.c	…
list_lru.c	mm/list_lru.c: revert "mm/list_lru: optimize memcg_reparent_list_lru_node()"	2022-04-08 14:20:36 -10:00
maccess.c	…
madvise.c	Revert "mm: madvise: skip unmapped vma holes passed to process_madvise"	2022-04-01 11:46:09 -07:00
mapping_dirty_helpers.c	…
memblock.c	…
memcontrol.c	memcg: sync flush only if periodic flush is delayed	2022-04-21 20:01:09 -07:00
memfd.c	…
memory-failure.c	mm/memory-failure.c: skip huge_zero_page in memory_failure()	2022-04-21 20:01:09 -07:00
memory.c	mm,hwpoison: unmap poisoned page before invalidation	2022-04-01 11:46:09 -07:00
memory_hotplug.c	…
mempolicy.c	Merge branch 'akpm' (patches from Andrew)	2022-04-08 14:31:41 -10:00
mempool.c	…
memremap.c	…
memtest.c	…
migrate.c	mm: migrate: use thp_order instead of HPAGE_PMD_ORDER for new page allocation.	2022-04-08 14:20:36 -10:00
migrate_device.c	…
mincore.c	…
mlock.c	mm/munlock: protect the per-CPU pagevec by a local_lock_t	2022-04-01 11:46:09 -07:00
mm_init.c	…
mmap.c	mm, hugetlb: allow for "high" userspace addresses	2022-04-21 20:01:09 -07:00
mmap_lock.c	…
mmu_gather.c	…
mmu_notifier.c	mm/mmu_notifier.c: fix race in mmu_interval_notifier_remove()	2022-04-21 20:01:10 -07:00
mmzone.c	…
mprotect.c	…
mremap.c	mmmremap.c: avoid pointless invalidate_range_start/end on mremap(old_size=0)	2022-04-08 14:20:36 -10:00
msync.c	…
nommu.c	no-MMU: expose vmalloc_huge() for alloc_large_system_hash()	2022-04-25 10:11:49 -07:00
oom_kill.c	oom_kill.c: futex: delay the OOM reaper to allow time for proper futex cleanup	2022-04-21 20:01:10 -07:00
page-writeback.c	…
page_alloc.c	page_alloc: use vmalloc_huge for large system hash	2022-04-24 10:00:54 -07:00
page_counter.c	…
page_ext.c	…
page_idle.c	…
page_io.c	mm: fix unexpected zeroed page mapping with zram swap	2022-04-15 14:49:55 -07:00
page_isolation.c	…
page_owner.c	…
page_poison.c	…
page_reporting.c	…
page_reporting.h	…
page_table_check.c	…
page_vma_mapped.c	mm/rmap: Fix handling of hugetlbfs pages in page_vma_mapped_walk	2022-04-07 10:11:20 -04:00
pagewalk.c	…
percpu-internal.h	…
percpu-km.c	…
percpu-stats.c	…
percpu-vm.c	…
percpu.c	…
pgalloc-track.h	…
pgtable-generic.c	…
process_vm_access.c	…
ptdump.c	…
readahead.c	mm/readahead: Fix readahead with large folios	2022-05-05 00:47:29 -04:00
rmap.c	mm/munlock: protect the per-CPU pagevec by a local_lock_t	2022-04-01 11:46:09 -07:00
rodata_test.c	…
secretmem.c	mm/secretmem: fix panic when growing a memfd_secret	2022-04-15 14:49:54 -07:00
shmem.c	tmpfs: fix regressions from wider use of ZERO_PAGE	2022-04-15 14:49:54 -07:00
shuffle.c	…
shuffle.h	…
slab.c	mm, kfence: support kmem_dump_obj() for KFENCE objects	2022-04-15 14:49:55 -07:00
slab.h	mm, kfence: support kmem_dump_obj() for KFENCE objects	2022-04-15 14:49:55 -07:00
slab_common.c	mm, kfence: support kmem_dump_obj() for KFENCE objects	2022-04-15 14:49:55 -07:00
slob.c	mm, kfence: support kmem_dump_obj() for KFENCE objects	2022-04-15 14:49:55 -07:00
slub.c	mm, kfence: support kmem_dump_obj() for KFENCE objects	2022-04-15 14:49:55 -07:00
sparse-vmemmap.c	…
sparse.c	…
swap.c	mm/munlock: protect the per-CPU pagevec by a local_lock_t	2022-04-01 11:46:09 -07:00
swap_cgroup.c	…
swap_slots.c	…
swap_state.c	…
swapfile.c	…
truncate.c	…
usercopy.c	…
userfaultfd.c	userfaultfd: mark uffd_wp regardless of VM_WRITE flag	2022-04-21 20:01:09 -07:00
util.c	kvmalloc: use vmalloc_huge for vmalloc allocations	2022-04-24 10:05:38 -07:00
vmacache.c	…
vmalloc.c	mm/vmalloc: huge vmalloc backing pages should be split rather than compound	2022-04-22 09:20:16 -07:00
vmpressure.c	…
vmscan.c	…
vmstat.c	…
workingset.c	memcg: sync flush only if periodic flush is delayed	2022-04-21 20:01:09 -07:00
z3fold.c	…
zbud.c	…
zpool.c	…
zsmalloc.c	…
zswap.c	…