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Linus Torvalds 8b0f9fa2e0 filemap: add a comment about FAULT_FLAG_RETRY_NOWAIT behavior 
I thought Josef Bacik's patch to drop the mmap_sem was buggy, because
when looking at the error cases, there was one case where we returned
VM_FAULT_RETRY without actually dropping the mmap_sem.

Josef had to explain to me (using small words) that yes, that's actually
what we're supposed to do, and his patch was correct.  Which not only
convinced me he knew what he was doing and I should stop arguing with
him, but also that I should add a comment to the case I was confused
about.

Patiently-pointed-out-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2019-03-15 11:26:07 -07:00
..
kasan
treewide: add checks for the return value of memblock_alloc*()
2019-03-12 10:04:02 -07:00
backing-dev.c
writeback: synchronize sync(2) against cgroup writeback membership switches
2019-01-22 14:39:38 -07:00
balloon_compaction.c
virtio_balloon: fix deadlock on OOM
2017-11-14 23:57:38 +02:00
cleancache.c
mm: use octal not symbolic permissions
2018-06-15 07:55:25 +09:00
cma_debug.c
mm/cma_debug.c: remove static scoped cma_debugfs_root
2019-03-05 21:07:20 -08:00
cma.c
memblock: emphasize that memblock_alloc_range() returns a physical address
2019-03-12 10:04:01 -07:00
cma.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
compaction.c
mm/compaction: pass pgdat to too_many_isolated() instead of zone
2019-03-05 21:07:21 -08:00
debug_page_ref.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
debug.c
5.1 Merge Window Pull Request
2019-03-09 15:53:03 -08:00
dmapool.c
docs/core-api/mm: fix return value descriptions in mm/
2019-03-05 21:07:20 -08:00
early_ioremap.c
mm/early_ioremap: Fix boot hang with earlyprintk=efi,keep
2017-12-11 14:54:44 +01:00
fadvise.c
vfs: implement readahead(2) using POSIX_FADV_WILLNEED
2018-08-30 20:01:32 +02:00
failslab.c
mm: no need to check return value of debugfs_create functions
2019-03-05 21:07:17 -08:00
filemap.c
filemap: add a comment about FAULT_FLAG_RETRY_NOWAIT behavior
2019-03-15 11:26:07 -07:00
frame_vector.c
mm/frame_vector.c: release a semaphore in 'get_vaddr_frames()'
2017-12-14 16:00:48 -08:00
frontswap.c
mm: use octal not symbolic permissions
2018-06-15 07:55:25 +09:00
gup_benchmark.c
mm: no need to check return value of debugfs_create functions
2019-03-05 21:07:17 -08:00
gup.c
Merge branch 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2019-03-07 17:43:58 -08:00
highmem.c
mm: convert totalram_pages and totalhigh_pages variables to atomic
2018-12-28 12:11:47 -08:00
hmm.c
mm/hmm: convert to use vm_fault_t
2019-03-12 10:04:00 -07:00
huge_memory.c
mm/huge_memory.c: fix "orig_pud" set but not used
2019-03-05 21:07:21 -08:00
hugetlb_cgroup.c
mm: rename page_counter's count/limit into usage/max
2018-06-07 17:34:35 -07:00
hugetlb.c
mm: update get_user_pages_longterm to migrate pages allocated from CMA region
2019-03-05 21:07:19 -08:00
hwpoison-inject.c
mm/memory_failure: Remove unused trapno from memory_failure
2018-01-23 12:17:42 -06:00
init-mm.c
mm: Allocate the mm_cpumask (mm->cpu_bitmap[]) dynamically based on nr_cpu_ids
2018-07-17 09:35:30 +02:00
internal.h
mm, compaction: capture a page under direct compaction
2019-03-05 21:07:17 -08:00
interval_tree.c
mm/interval_tree.c: use vma_pages() helper
2018-01-31 17:18:37 -08:00
Kconfig
ksm: replace jhash2 with xxhash
2018-12-28 12:11:46 -08:00
Kconfig.debug
mm/page_owner: move config option to mm/Kconfig.debug
2019-03-05 21:07:18 -08:00
khugepaged.c
mm: memcontrol: expose THP events on a per-memcg basis
2019-03-05 21:07:19 -08:00
kmemleak-test.c
…
kmemleak.c
kmemleak: account for tagged pointers when calculating pointer range
2019-02-21 09:01:00 -08:00
ksm.c
mm: ksm: do not block on page lock when searching stable tree
2019-03-05 21:07:19 -08:00
list_lru.c
numa: make "nr_node_ids" unsigned int
2019-03-05 21:07:19 -08:00
maccess.c
Revert "x86/fault: BUG() when uaccess helpers fault on kernel addresses"
2019-02-25 09:10:51 -08:00
madvise.c
mm/mmu_notifier: use structure for invalidate_range_start/end calls v2
2018-12-28 12:11:50 -08:00
Makefile
mm: remove nobootmem
2018-10-31 08:54:16 -07:00
memblock.c
mm: memblock: update comments and kernel-doc
2019-03-12 10:04:02 -07:00
memcontrol.c
mm/memcontrol.c: fix bad line in comment
2019-03-05 21:07:21 -08:00
memfd.c
mm/memfd: add an F_SEAL_FUTURE_WRITE seal to memfd
2019-03-05 21:07:19 -08:00
memory_hotplug.c
xen: fixes and features for 5.1-rc1
2019-03-11 17:08:14 -07:00
memory-failure.c
mm: hwpoison: fix thp split handing in soft_offline_in_use_page()
2019-03-05 21:07:13 -08:00
memory.c
mm/memory.c: do_fault: avoid usage of stale vm_area_struct
2019-03-05 21:07:21 -08:00
mempolicy.c
mm, mempolicy: fix uninit memory access
2019-03-05 21:07:18 -08:00
mempool.c
docs/core-api/mm: fix return value descriptions in mm/
2019-03-05 21:07:20 -08:00
memtest.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
migrate.c
mm/migrate.c: cleanup expected_page_refs()
2019-03-05 21:07:20 -08:00
mincore.c
Revert "Change mincore() to count "mapped" pages rather than "cached" pages"
2019-01-24 09:04:37 +13:00
mlock.c
mm: remove zone_lru_lock() function, access ->lru_lock directly
2019-03-05 21:07:21 -08:00
mm_init.c
mm: convert totalram_pages and totalhigh_pages variables to atomic
2018-12-28 12:11:47 -08:00
mmap.c
mm: fix some typos in mm directory
2019-03-05 21:07:18 -08:00
mmu_context.c
sched/headers: Prepare to move the task_lock()/unlock() APIs to <linux/sched/task.h>
2017-03-02 08:42:38 +01:00
mmu_gather.c
mm: Replace call_rcu_sched() with call_rcu()
2018-11-27 09:21:46 -08:00
mmu_notifier.c
mm/mmu_notifier: use structure for invalidate_range_start/end calls v2
2018-12-28 12:11:50 -08:00
mmzone.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
mprotect.c
mm: update ptep_modify_prot_commit to take old pte value as arg
2019-03-05 21:07:18 -08:00
mremap.c
mm,mremap: bail out earlier in mremap_to under map pressure
2019-03-05 21:07:21 -08:00
msync.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
nommu.c
mm/gup: cache dev_pagemap while pinning pages
2018-10-26 16:38:15 -07:00
oom_kill.c
mm,oom: don't kill global init via memory.oom.group
2019-03-05 21:07:19 -08:00
page_alloc.c
memblock: drop memblock_alloc_*_nopanic() variants
2019-03-12 10:04:02 -07:00
page_counter.c
memcg: introduce memory.min
2018-06-07 17:34:36 -07:00
page_ext.c
memblock: drop memblock_alloc_*_nopanic() variants
2019-03-12 10:04:02 -07:00
page_idle.c
mm: remove zone_lru_lock() function, access ->lru_lock directly
2019-03-05 21:07:21 -08:00
page_io.c
mm/page_io.c: fix polled swap page in
2019-01-04 13:13:48 -08:00
page_isolation.c
mm: only report isolation failures when offlining memory
2018-12-28 12:11:46 -08:00
page_owner.c
mm: no need to check return value of debugfs_create functions
2019-03-05 21:07:17 -08:00
page_poison.c
page_poison: play nicely with KASAN
2019-03-05 21:07:13 -08:00
page_vma_mapped.c
mm/rmap: map_pte() was not handling private ZONE_DEVICE page properly
2018-10-31 08:54:11 -07:00
page-writeback.c
docs/core-api/mm: fix return value descriptions in mm/
2019-03-05 21:07:20 -08:00
pagewalk.c
mm: kernel-doc: add missing parameter descriptions
2018-04-05 21:36:27 -07:00
percpu-internal.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
percpu-km.c
percpu: km: no need to consider pcpu_group_offsets[0]
2019-02-26 13:47:58 -08:00
percpu-stats.c
treewide: Use array_size() in vmalloc()
2018-06-12 16:19:22 -07:00
percpu-vm.c
percpu: allow select gfp to be passed to underlying allocators
2018-02-18 05:33:01 -08:00
percpu.c
memblock: drop memblock_alloc_*_nopanic() variants
2019-03-12 10:04:02 -07:00
pgtable-generic.c
x86/mm: Page size aware flush_tlb_mm_range()
2018-10-09 16:51:11 +02:00
process_vm_access.c
mm: docs: add blank lines to silence sphinx "Unexpected indentation" errors
2018-02-06 18:32:48 -08:00
quicklist.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
readahead.c
docs/core-api/mm: fix return value descriptions in mm/
2019-03-05 21:07:20 -08:00
rmap.c
mm: remove zone_lru_lock() function, access ->lru_lock directly
2019-03-05 21:07:21 -08:00
rodata_test.c
mm: fix RODATA_TEST failure "rodata_test: test data was not read only"
2017-10-03 17:54:24 -07:00
shmem.c
mm/memfd: add an F_SEAL_FUTURE_WRITE seal to memfd
2019-03-05 21:07:19 -08:00
slab_common.c
docs/core-api/mm: fix return value descriptions in mm/
2019-03-05 21:07:20 -08:00
slab.c
docs/core-api/mm: fix return value descriptions in mm/
2019-03-05 21:07:20 -08:00
slab.h
memcg: localize memcg_kmem_enabled() check
2019-03-05 21:07:15 -08:00
slob.c
slab: __GFP_ZERO is incompatible with a constructor
2018-06-07 17:34:34 -07:00
slub.c
numa: make "nr_node_ids" unsigned int
2019-03-05 21:07:19 -08:00
sparse-vmemmap.c
mm: remove include/linux/bootmem.h
2018-10-31 08:54:16 -07:00
sparse.c
memblock: drop memblock_alloc_*_nopanic() variants
2019-03-12 10:04:02 -07:00
swap_cgroup.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
swap_slots.c
mm, swap, get_swap_pages: use entry_size instead of cluster in parameter
2018-08-22 10:52:44 -07:00
swap_state.c
mm: swap: add comment for swap_vma_readahead
2019-03-05 21:07:16 -08:00
swap.c
mm: remove zone_lru_lock() function, access ->lru_lock directly
2019-03-05 21:07:21 -08:00
swapfile.c
mm/swapfile.c: use struct_size() in kvzalloc()
2019-03-05 21:07:21 -08:00
truncate.c
docs/core-api/mm: fix return value descriptions in mm/
2019-03-05 21:07:20 -08:00
usercopy.c
mm/usercopy.c: no check page span for stack objects
2019-01-08 17:15:11 -08:00
userfaultfd.c
hugetlbfs: revert "use i_mmap_rwsem for more pmd sharing synchronization"
2019-01-08 17:15:11 -08:00
util.c
docs/core-api/mm: fix return value descriptions in mm/
2019-03-05 21:07:20 -08:00
vmacache.c
mm: get rid of vmacache_flush_all() entirely
2018-09-13 15:18:04 -10:00
vmalloc.c
docs/core-api/mm: fix return value descriptions in mm/
2019-03-05 21:07:20 -08:00
vmpressure.c
mm/vmpressure.c: convert to use match_string() helper
2018-06-07 17:34:36 -07:00
vmscan.c
mm: remove zone_lru_lock() function, access ->lru_lock directly
2019-03-05 21:07:21 -08:00
vmstat.c
mm: no need to check return value of debugfs_create functions
2019-03-05 21:07:17 -08:00
workingset.c
mm/workingset: remove unused @mapping argument in workingset_eviction()
2019-03-05 21:07:21 -08:00
z3fold.c
z3fold: fix possible reclaim races
2018-11-18 10:15:09 -08:00
zbud.c
mm: docs: fix parameter names mismatch
2018-02-06 18:32:48 -08:00
zpool.c
mm/zpool.c: zpool_evictable: fix mismatch in parameter name and kernel-doc
2018-02-21 15:35:43 -08:00
zsmalloc.c
mm/zsmalloc.c: fix fall-through annotation
2018-10-26 16:26:35 -07:00
zswap.c
mm: convert totalram_pages and totalhigh_pages variables to atomic
2018-12-28 12:11:47 -08:00