diff options
| author | Chao Yu <chao@kernel.org> | 2021-08-04 08:38:38 +0800 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk@kernel.org> | 2021-08-03 18:08:29 -0700 |
| commit | 91803392c732c43b5cf440e885ea89be7f5fecef (patch) | |
| tree | ed33190a7844c8500801b20f992227dc39380ca7 | |
| parent | 0f6b56ec958d49e2b3dc955cdac6b62702c04b72 (diff) | |
| download | linux-91803392c732c43b5cf440e885ea89be7f5fecef.tar.bz2 | |
f2fs: fix to stop filesystem update once CP failed
During f2fs_write_checkpoint(), once we failed in
f2fs_flush_nat_entries() or do_checkpoint(), metadata of filesystem
such as prefree bitmap, nat/sit version bitmap won't be recovered,
it may cause f2fs image to be inconsistent, let's just set CP error
flag to avoid further updates until we figure out a scheme to rollback
all metadatas in such condition.
Reported-by: Yangtao Li <frank.li@vivo.com>
Signed-off-by: Yangtao Li <frank.li@vivo.com>
Signed-off-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
| -rw-r--r-- | fs/f2fs/checkpoint.c | 12 | ||||
| -rw-r--r-- | fs/f2fs/f2fs.h | 2 | ||||
| -rw-r--r-- | fs/f2fs/segment.c | 15 |
3 files changed, 23 insertions, 6 deletions
diff --git a/fs/f2fs/checkpoint.c b/fs/f2fs/checkpoint.c index 6c208108d69c..7f6745f4630e 100644 --- a/fs/f2fs/checkpoint.c +++ b/fs/f2fs/checkpoint.c @@ -1639,8 +1639,11 @@ int f2fs_write_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc) /* write cached NAT/SIT entries to NAT/SIT area */ err = f2fs_flush_nat_entries(sbi, cpc); - if (err) + if (err) { + f2fs_err(sbi, "f2fs_flush_nat_entries failed err:%d, stop checkpoint", err); + f2fs_bug_on(sbi, !f2fs_cp_error(sbi)); goto stop; + } f2fs_flush_sit_entries(sbi, cpc); @@ -1648,10 +1651,13 @@ int f2fs_write_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc) f2fs_save_inmem_curseg(sbi); err = do_checkpoint(sbi, cpc); - if (err) + if (err) { + f2fs_err(sbi, "do_checkpoint failed err:%d, stop checkpoint", err); + f2fs_bug_on(sbi, !f2fs_cp_error(sbi)); f2fs_release_discard_addrs(sbi); - else + } else { f2fs_clear_prefree_segments(sbi, cpc); + } f2fs_restore_inmem_curseg(sbi); stop: diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h index 1b4c482d08e2..d24fd5045712 100644 --- a/fs/f2fs/f2fs.h +++ b/fs/f2fs/f2fs.h @@ -547,7 +547,7 @@ enum { */ }; -#define DEFAULT_RETRY_IO_COUNT 8 /* maximum retry read IO count */ +#define DEFAULT_RETRY_IO_COUNT 8 /* maximum retry read IO or flush count */ /* congestion wait timeout value, default: 20ms */ #define DEFAULT_IO_TIMEOUT (msecs_to_jiffies(20)) diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c index 80f26158e304..ca9876a6d396 100644 --- a/fs/f2fs/segment.c +++ b/fs/f2fs/segment.c @@ -776,11 +776,22 @@ int f2fs_flush_device_cache(struct f2fs_sb_info *sbi) return 0; for (i = 1; i < sbi->s_ndevs; i++) { + int count = DEFAULT_RETRY_IO_COUNT; + if (!f2fs_test_bit(i, (char *)&sbi->dirty_device)) continue; - ret = __submit_flush_wait(sbi, FDEV(i).bdev); - if (ret) + + do { + ret = __submit_flush_wait(sbi, FDEV(i).bdev); + if (ret) + congestion_wait(BLK_RW_ASYNC, + DEFAULT_IO_TIMEOUT); + } while (ret && --count); + + if (ret) { + f2fs_stop_checkpoint(sbi, false); break; + } spin_lock(&sbi->dev_lock); f2fs_clear_bit(i, (char *)&sbi->dirty_device); |