On 2019/1/25 8:52, Jaegeuk Kim wrote: > On 01/24, Chao Yu wrote: >> On 2019/1/23 8:02, Jaegeuk Kim wrote: >>> Some works after roll-forward recovery can get an error which will release >>> all the data structures. Let's flush them in order to make it clean. >>> >>> One possible corruption came from: >>> >>> [ 90.400500] list_del corruption. prev->next should be ffffffed1f566208, >>> but was (null) >>> [ 90.675349] Call trace: >>> [ 90.677869] __list_del_entry_valid+0x94/0xb4 >>> [ 90.682351] remove_dirty_inode+0xac/0x114 >>> [ 90.686563] __f2fs_write_data_pages+0x6a8/0x6c8 >>> [ 90.691302] f2fs_write_data_pages+0x40/0x4c >>> [ 90.695695] do_writepages+0x80/0xf0 >>> [ 90.699372] __writeback_single_inode+0xdc/0x4ac >>> [ 90.704113] writeback_sb_inodes+0x280/0x440 >>> [ 90.708501] wb_writeback+0x1b8/0x3d0 >>> [ 90.712267] wb_workfn+0x1a8/0x4d4 >>> [ 90.715765] process_one_work+0x1c0/0x3d4 >>> [ 90.719883] worker_thread+0x224/0x344 >>> [ 90.723739] kthread+0x120/0x130 >>> [ 90.727055] ret_from_fork+0x10/0x18 >>> >>> Reported-by: Sahitya Tummala <stumm...@codeaurora.org> >>> Signed-off-by: Jaegeuk Kim <jaeg...@kernel.org> >>> --- >>> fs/f2fs/checkpoint.c | 5 +++-- >>> fs/f2fs/node.c | 4 +++- >>> fs/f2fs/super.c | 42 +++++++++++++++++++++++++++++++----------- >>> 3 files changed, 37 insertions(+), 14 deletions(-) >>> >>> diff --git a/fs/f2fs/checkpoint.c b/fs/f2fs/checkpoint.c >>> index f955cd3e0677..ccccf0ce2f06 100644 >>> --- a/fs/f2fs/checkpoint.c >>> +++ b/fs/f2fs/checkpoint.c >>> @@ -306,8 +306,9 @@ static int f2fs_write_meta_pages(struct address_space >>> *mapping, >>> goto skip_write; >>> >>> /* collect a number of dirty meta pages and write together */ >>> - if (wbc->for_kupdate || >>> - get_pages(sbi, F2FS_DIRTY_META) < nr_pages_to_skip(sbi, META)) >>> + if (wbc->sync_mode != WB_SYNC_ALL && >>> + get_pages(sbi, F2FS_DIRTY_META) < >>> + nr_pages_to_skip(sbi, META)) >>> goto skip_write; >>> >>> /* if locked failed, cp will flush dirty pages instead */ >>> diff --git a/fs/f2fs/node.c b/fs/f2fs/node.c >>> index 4f450e573312..f6ff84e29749 100644 >>> --- a/fs/f2fs/node.c >>> +++ b/fs/f2fs/node.c >>> @@ -1920,7 +1920,9 @@ static int f2fs_write_node_pages(struct address_space >>> *mapping, >>> f2fs_balance_fs_bg(sbi); >>> >>> /* collect a number of dirty node pages and write together */ >>> - if (get_pages(sbi, F2FS_DIRTY_NODES) < nr_pages_to_skip(sbi, NODE)) >>> + if (wbc->sync_mode != WB_SYNC_ALL && >>> + get_pages(sbi, F2FS_DIRTY_NODES) < >>> + nr_pages_to_skip(sbi, NODE)) >>> goto skip_write; >>> >>> if (wbc->sync_mode == WB_SYNC_ALL) >>> diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c >>> index 7998ff5418f2..2af0db2b738e 100644 >>> --- a/fs/f2fs/super.c >>> +++ b/fs/f2fs/super.c >>> @@ -1456,9 +1456,16 @@ static int f2fs_enable_quotas(struct super_block >>> *sb); >>> >>> static int f2fs_disable_checkpoint(struct f2fs_sb_info *sbi) >>> { >>> + unsigned int s_flags = sbi->sb->s_flags; >>> struct cp_control cpc; >>> - int err; >>> + int err = 0; >>> + int ret; >>> >>> + if (s_flags & SB_RDONLY) { >>> + f2fs_msg(sbi->sb, KERN_ERR, >>> + "checkpoint=disable on readonly fs"); >>> + return -EINVAL; >>> + } >>> sbi->sb->s_flags |= SB_ACTIVE; >>> >>> f2fs_update_time(sbi, DISABLE_TIME); >>> @@ -1466,18 +1473,24 @@ static int f2fs_disable_checkpoint(struct >>> f2fs_sb_info *sbi) >>> while (!f2fs_time_over(sbi, DISABLE_TIME)) { >>> mutex_lock(&sbi->gc_mutex); >>> err = f2fs_gc(sbi, true, false, NULL_SEGNO); >>> - if (err == -ENODATA) >>> + if (err == -ENODATA) { >>> + err = 0; >>> break; >>> + } >>> if (err && err != -EAGAIN) >>> - return err; >>> + break; >> >> Should be? >> >> if (err) { >> if (err == -EAGAIN) >> err = 0; > > Have to report EAGAIN, but not for ENODATA.
Oh, right. :) Reviewed-by: Chao Yu <yuch...@huawei.com> Thanks, > >> else >> break; >> } >> >> Thanks, >> >>> } >>> >>> - err = sync_filesystem(sbi->sb); >>> - if (err) >>> - return err; >>> + ret = sync_filesystem(sbi->sb); >>> + if (ret || err) { >>> + err = ret ? ret: err; >>> + goto restore_flag; >>> + } >>> >>> - if (f2fs_disable_cp_again(sbi)) >>> - return -EAGAIN; >>> + if (f2fs_disable_cp_again(sbi)) { >>> + err = -EAGAIN; >>> + goto restore_flag; >>> + } >>> >>> mutex_lock(&sbi->gc_mutex); >>> cpc.reason = CP_PAUSE; >>> @@ -1486,7 +1499,9 @@ static int f2fs_disable_checkpoint(struct >>> f2fs_sb_info *sbi) >>> >>> sbi->unusable_block_count = 0; >>> mutex_unlock(&sbi->gc_mutex); >>> - return 0; >>> +restore_flag: >>> + sbi->sb->s_flags = s_flags; /* Restore MS_RDONLY status */ >>> + return err; >>> } >>> >>> static void f2fs_enable_checkpoint(struct f2fs_sb_info *sbi) >>> @@ -3356,7 +3371,7 @@ static int f2fs_fill_super(struct super_block *sb, >>> void *data, int silent) >>> if (test_opt(sbi, DISABLE_CHECKPOINT)) { >>> err = f2fs_disable_checkpoint(sbi); >>> if (err) >>> - goto free_meta; >>> + goto sync_free_meta; >>> } else if (is_set_ckpt_flags(sbi, CP_DISABLED_FLAG)) { >>> f2fs_enable_checkpoint(sbi); >>> } >>> @@ -3369,7 +3384,7 @@ static int f2fs_fill_super(struct super_block *sb, >>> void *data, int silent) >>> /* After POR, we can run background GC thread.*/ >>> err = f2fs_start_gc_thread(sbi); >>> if (err) >>> - goto free_meta; >>> + goto sync_free_meta; >>> } >>> kvfree(options); >>> >>> @@ -3391,6 +3406,11 @@ static int f2fs_fill_super(struct super_block *sb, >>> void *data, int silent) >>> f2fs_update_time(sbi, REQ_TIME); >>> return 0; >>> >>> +sync_free_meta: >>> + /* safe to flush all the data */ >>> + sync_filesystem(sbi->sb); >>> + retry = false; >>> + >>> free_meta: >>> #ifdef CONFIG_QUOTA >>> f2fs_truncate_quota_inode_pages(sb); >>> > > . > _______________________________________________ Linux-f2fs-devel mailing list Linux-f2fs-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel