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Yi Chen 844ced0db7 f2fs: fix to avoid inconsistent quota data 
[ Upstream commit 25fb04dbce6a0e165d28fd1fa8a1d7018c637fe8 ]

Occasionally, quota data may be corrupted detected by fsck:

Info: checkpoint state = 45 :  crc compacted_summary unmount
[QUOTA WARNING] Usage inconsistent for ID 0:actual (1543036928, 762) != expected (1543032832, 762)
[ASSERT] (fsck_chk_quota_files:1986)  --> Quota file is missing or invalid quota file content found.
[QUOTA WARNING] Usage inconsistent for ID 0:actual (1352478720, 344) != expected (1352474624, 344)
[ASSERT] (fsck_chk_quota_files:1986)  --> Quota file is missing or invalid quota file content found.

[FSCK] Unreachable nat entries                        [Ok..] [0x0]
[FSCK] SIT valid block bitmap checking                [Ok..]
[FSCK] Hard link checking for regular file            [Ok..] [0x0]
[FSCK] valid_block_count matching with CP             [Ok..] [0xdf299]
[FSCK] valid_node_count matcing with CP (de lookup)   [Ok..] [0x2b01]
[FSCK] valid_node_count matcing with CP (nat lookup)  [Ok..] [0x2b01]
[FSCK] valid_inode_count matched with CP              [Ok..] [0x2665]
[FSCK] free segment_count matched with CP             [Ok..] [0xcb04]
[FSCK] next block offset is free                      [Ok..]
[FSCK] fixing SIT types
[FSCK] other corrupted bugs                           [Fail]

The root cause is:
If we open file w/ readonly flag, disk quota info won't be initialized
for this file, however, following mmap() will force to convert inline
inode via f2fs_convert_inline_inode(), which may increase block usage
for this inode w/o updating quota data, it causes inconsistent disk quota
info.

The issue will happen in following stack:
open(file, O_RDONLY)
mmap(file)
- f2fs_convert_inline_inode
 - f2fs_convert_inline_page
  - f2fs_reserve_block
   - f2fs_reserve_new_block
    - f2fs_reserve_new_blocks
     - f2fs_i_blocks_write
      - dquot_claim_block
inode->i_blocks increase, but the dqb_curspace keep the size for the dquots
is NULL.

To fix this issue, let's call dquot_initialize() anyway in both
f2fs_truncate() and f2fs_convert_inline_inode() functions to avoid potential
inconsistent quota data issue.

Fixes: 0abd675e97e6 ("f2fs: support plain user/group quota")
Signed-off-by: Daiyue Zhang <zhangdaiyue1@huawei.com>
Signed-off-by: Dehe Gu <gudehe@huawei.com>
Signed-off-by: Junchao Jiang <jiangjunchao1@huawei.com>
Signed-off-by: Ge Qiu <qiuge@huawei.com>
Signed-off-by: Yi Chen <chenyi77@huawei.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
 		2021-04-12 12:52:20 +08:00
Documentation KVM: Forbid the use of tagged userspace addresses for memslots 2021-04-12 12:51:44 +08:00
LICENSES Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
arch MIPS: properly stop .eh_frame generation 2021-04-12 12:52:19 +08:00
block bsg: free the request before return error code 2021-04-12 12:52:19 +08:00
certs Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
crypto crypto: asym_tpm: correct zero out potential secrets 2021-04-12 12:51:10 +08:00
drivers mtd: parsers: afs: Fix freeing the part name memory in failure 2021-04-12 12:52:20 +08:00
fs f2fs: fix to avoid inconsistent quota data 2021-04-12 12:52:20 +08:00
include tcp: fix SO_RCVLOWAT related hangs under mem pressure 2021-04-12 12:52:15 +08:00
init fgraph: Initialize tracing_graph_pause at task creation 2021-04-12 12:51:55 +08:00
ipc ipc/util.c: sysvipc_find_ipc() incorrectly updates position index 2021-03-16 16:27:51 +08:00
kernel sched/eas: Don't update misfit status if the task is pinned 2021-04-12 12:52:20 +08:00
lib udp: fix skb_copy_and_csum_datagram with odd segment sizes 2021-04-12 12:52:05 +08:00
mm mm: provide a saner PTE walking API for modules 2021-04-12 12:52:09 +08:00
net bpf: Fix bpf_fib_lookup helper MTU check for SKB ctx 2021-04-12 12:52:15 +08:00
package generate-rpms: modify the name of the kernel tag for x86 and arm64 2021-04-07 06:53:59 +00:00
samples samples: bpf: Fix lwt_len_hist reusing previous BPF map 2021-03-16 16:42:53 +08:00
scripts scripts/recordmcount.pl: support big endian for ARCH sh 2021-04-12 12:52:10 +08:00
security evm: Fix memleak in init_desc 2021-04-12 12:52:18 +08:00
sound ASoC: cpcap: fix microphone timeslot mask 2021-04-12 12:52:20 +08:00
tools selftests: txtimestamp: fix compilation issue 2021-04-12 12:52:04 +08:00
usr Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
virt KVM: Use kvm_pfn_t for local PFN variable in hva_to_pfn_remapped() 2021-04-12 12:52:09 +08:00
.clang-format Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
.cocciconfig Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
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Kconfig Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
MAINTAINERS Documentation/llvm: add documentation on building w/ Clang/LLVM 2021-03-16 16:34:24 +08:00
Makefile x86/build: Disable CET instrumentation in the kernel 2021-04-12 12:51:57 +08:00
README Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
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README.md

Tencent Linux Kernel 4.0