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Manjong Lee 6759b91d21 mm: bdi: initialize bdi_min_ratio when bdi is unregistered 
commit 3c376dfafbf7a8ea0dea212d095ddd83e93280bb upstream.

Initialize min_ratio if it is set during bdi unregistration.  This can
prevent problems that may occur a when bdi is removed without resetting
min_ratio.

For example.
1) insert external sdcard
2) set external sdcard's min_ratio 70
3) remove external sdcard without setting min_ratio 0
4) insert external sdcard
5) set external sdcard's min_ratio 70 << error occur(can't set)

Because when an sdcard is removed, the present bdi_min_ratio value will
remain.  Currently, the only way to reset bdi_min_ratio is to reboot.

[akpm@linux-foundation.org: tweak comment and coding style]

Link: https://lkml.kernel.org/r/20211021161942.5983-1-mj0123.lee@samsung.com
Signed-off-by: Manjong Lee <mj0123.lee@samsung.com>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Changheun Lee <nanich.lee@samsung.com>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: <seunghwan.hyun@samsung.com>
Cc: <sookwan7.kim@samsung.com>
Cc: <yt0928.kim@samsung.com>
Cc: <junho89.kim@samsung.com>
Cc: <jisoo2146.oh@samsung.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-12-14 10:16:54 +01:00
..
kasan
kasan: fix shadow_size calculation error in kasan_module_alloc
2018-08-24 13:09:12 +02:00
backing-dev.c
mm: bdi: initialize bdi_min_ratio when bdi is unregistered
2021-12-14 10:16:54 +01:00
balloon_compaction.c
virtio_balloon: fix deadlock on OOM
2018-10-13 09:27:30 +02:00
bootmem.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
cleancache.c
…
cma_debug.c
mm/cma_debug.c: fix the break condition in cma_maxchunk_get()
2019-06-15 11:54:51 +02:00
cma.c
mm/cma.c: fail if fixed declaration can't be honored
2019-08-06 19:05:23 +02:00
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.c: clear total_{migrate,free}_scanned before scanning a new zone
2019-10-05 12:48:13 +02:00
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
mm: get rid of vmacache_flush_all() entirely
2018-09-19 22:43:48 +02:00
dmapool.c
…
early_ioremap.c
mm/early_ioremap: Fix boot hang with earlyprintk=efi,keep
2018-02-25 11:08:03 +01:00
fadvise.c
mm/fadvise.c: fix signed overflow UBSAN complaint
2018-09-15 09:45:28 +02:00
failslab.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
filemap.c
mm/filemap.c: clear page error before actual read
2020-10-01 13:12:40 +02:00
frame_vector.c
mm/frame_vector.c: release a semaphore in 'get_vaddr_frames()'
2018-03-03 10:24:21 +01:00
frontswap.c
…
gup.c
gup: document and work around "COW can break either way" issue
2021-04-28 12:08:42 +02:00
highmem.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
hmm.c
mm, hmm: mark hmm_devmem_{add, add_resource} EXPORT_SYMBOL_GPL
2019-01-13 10:01:02 +01:00
huge_memory.c
mm/huge_memory.c: don't discard hugepage if other processes are mapping it
2021-07-20 16:17:41 +02:00
hugetlb_cgroup.c
mm: hugetlb: switch to css_tryget() in hugetlb_cgroup_charge_cgroup()
2019-11-20 17:59:33 +01:00
hugetlb.c
hugetlb: take PMD sharing into account when flushing tlb/caches
2021-12-08 08:46:53 +01:00
hwpoison-inject.c
…
init-mm.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
internal.h
mm/thp: fix vma_address() if virtual address below file offset
2021-07-11 12:48:10 +02:00
interval_tree.c
lib/interval_tree: fast overlap detection
2017-09-08 18:26:49 -07:00
Kconfig
mm/hmm: select mmu notifier when selecting HMM
2019-06-15 11:54:51 +02:00
Kconfig.debug
kmemcheck: rip it out
2018-02-22 15:42:24 +01:00
khugepaged.c
khugepaged: fix wrong result value for trace_mm_collapse_huge_page_isolate()
2021-05-22 10:57:39 +02:00
kmemleak-test.c
…
kmemleak.c
mm/kmemleak.c: make cond_resched() rate-limiting more efficient
2021-09-22 11:45:16 +02:00
ksm.c
ksm: fix potential missing rmap_item for stable_node
2021-05-22 10:57:39 +02:00
list_lru.c
mm/list_lru.c: fix memory leak in __memcg_init_list_lru_node
2019-06-19 08:20:54 +02:00
maccess.c
uaccess: Add non-pagefault user-space write function
2020-09-09 19:03:11 +02:00
madvise.c
mm: madvise(MADV_DODUMP): allow hugetlbfs pages
2018-10-10 08:54:22 +02:00
Makefile
kmemcheck: rip it out
2018-02-22 15:42:24 +01:00
memblock.c
memblock: do not start bottom-up allocations with kernel_end
2021-02-23 14:00:32 +01:00
memcontrol.c
mm: writeback: use exact memcg dirty counts
2021-04-07 12:47:03 +02:00
memory_hotplug.c
mm/memory_hotplug: use "unsigned long" for PFN in zone_for_pfn_range()
2021-09-22 11:45:34 +02:00
memory-failure.c
mm/memory-failure: make sure wait for page writeback in memory_failure
2021-06-30 08:48:48 -04:00
memory.c
hugetlbfs: flush TLBs correctly after huge_pmd_unshare
2021-12-08 08:46:52 +01:00
mempolicy.c
mm: mempolicy: fix potential pte_unmap_unlock pte error
2020-11-18 18:27:52 +01:00
mempool.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
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: add missing flush_dcache_page for non-mapped page migrate
2019-04-03 06:25:20 +02:00
mincore.c
mm/mincore.c: make mincore() more conservative
2019-05-21 18:50:16 +02:00
mlock.c
mm/mlock.c: change count_mm_mlocked_page_nr return type
2019-07-10 09:54:36 +02:00
mm_init.c
…
mmap.c
mm/mmap.c: initialize align_offset explicitly for vm_unmapped_area
2020-10-01 13:12:41 +02:00
mmu_context.c
…
mmu_notifier.c
mm/mmu_notifier: use hlist_add_head_rcu()
2019-07-31 07:28:56 +02:00
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, numa: fix bad pmd by atomically check for pmd_trans_huge when marking page tables prot_numa
2020-03-11 18:03:02 +01:00
mremap.c
mm: Fix mremap not considering huge pmd devmap
2020-06-11 09:22:57 +02:00
msync.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
nobootmem.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
x86/mm: split vmalloc_sync_all()
2020-04-02 16:34:20 +02:00
oom_kill.c
mm, oom: do not trigger out_of_memory from the #PF
2021-11-26 11:40:37 +01:00
page_alloc.c
mm/page_alloc: speed up the iteration of max_order
2021-09-22 11:45:16 +02:00
page_counter.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
page_ext.c
mm/page_ext.c: fix an imbalance with kmemleak
2019-04-05 22:31:27 +02:00
page_idle.c
mm/page_idle.c: fix oops because end_pfn is larger than max_pfn
2019-07-03 13:15:59 +02:00
page_io.c
swap: fix swapfile read/write offset
2021-03-07 11:27:46 +01:00
page_isolation.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
page_owner.c
mm/page_owner.c: remove drain_all_pages from init_early_allocated_pages
2020-07-31 16:44:45 +02:00
page_poison.c
page_poison: play nicely with KASAN
2019-04-05 22:31:28 +02:00
page_vma_mapped.c
mm/thp: another PVMW_SYNC fix in page_vma_mapped_walk()
2021-07-11 12:48:12 +02:00
page-writeback.c
mm/page-writeback.c: avoid potential division by zero in wb_min_max_ratio()
2020-01-23 08:20:32 +01:00
pagewalk.c
mm: pagewalk: fix termination condition in walk_pte_range()
2020-10-01 13:12:32 +02:00
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: convert spin_lock_irq to spin_lock_irqsave.
2019-02-12 19:46:05 +01:00
percpu-stats.c
percpu: fix starting offset for chunk statistics traversal
2017-09-27 14:45:57 -07:00
percpu-vm.c
percpu: add __GFP_NORETRY semantics to the percpu balancing path
2018-04-08 14:26:29 +02:00
percpu.c
percpu: fix first chunk size calculation for populated bitmap
2020-09-23 10:46:36 +02:00
pgtable-generic.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
process_vm_access.c
…
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
readahead: stricter check for bdi io_pages
2018-09-09 19:55:53 +02:00
rmap.c
mm/thp: fix page_address_in_vma() on file THP tails
2021-07-11 12:48:10 +02:00
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
userfaultfd: release page in error path to avoid BUG_ON
2021-05-22 10:57:39 +02:00
slab_common.c
mm/slab: use memzero_explicit() in kzfree()
2020-06-30 15:38:08 -04:00
slab.c
mm/slab.c: fix an infinite loop in leaks_show()
2019-06-15 11:54:51 +02:00
slab.h
mm: kmemleak: slob: respect SLAB_NOLEAKTRACE flag
2021-11-26 11:40:40 +01:00
slob.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
slub.c
mm/slub.c: include swab.h
2021-06-30 08:48:54 -04:00
sparse-vmemmap.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
sparse.c
mm: sections are not offlined during memory hotremove
2018-05-16 10:10:27 +02:00
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
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
swap_state.c
mm/swap_state: fix a data race in swapin_nr_pages
2020-10-01 13:12:46 +02:00
swap.c
mm: avoid marking swap cached page as lazyfree
2017-10-03 17:54:24 -07:00
swapfile.c
swap: fix swapfile read/write offset
2021-03-07 11:27:46 +01:00
truncate.c
mm: cleancache: fix corruption on missed inode invalidation
2018-12-08 13:03:40 +01:00
usercopy.c
usercopy: Avoid HIGHMEM pfn warning
2019-10-11 18:18:34 +02:00
userfaultfd.c
hugetlbfs: hugetlb_fault_mutex_hash() cleanup
2021-06-03 08:36:25 +02:00
util.c
mm: add kvfree_sensitive() for freeing sensitive data objects
2020-06-20 10:24:59 +02:00
vmacache.c
mm: get rid of vmacache_flush_all() entirely
2018-09-19 22:43:48 +02:00
vmalloc.c
mm/vmalloc.c: don't dereference possible NULL pointer in __vunmap()
2020-06-03 08:18:11 +02:00
vmpressure.c
…
vmscan.c
mm: memcg: make sure memory.events is uptodate when waking pollers
2021-04-07 12:47:03 +02:00
vmstat.c
mm, vmstat: drop zone->lock in /proc/pagetypeinfo
2021-06-03 08:36:10 +02:00
workingset.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
z3fold.c
z3fold: fix possible reclaim races
2018-12-01 09:42:54 +01:00
zbud.c
…
zpool.c
…
zsmalloc.c
mm/zsmalloc.c: close race window between zs_pool_dec_isolated() and zs_unregister_migration()
2021-11-26 11:40:36 +01:00
zswap.c
zswap: re-check zswap_is_full() after do zswap_shrink()
2018-09-05 09:26:30 +02:00