[ Upstream commit 812a95977fd2f0d1f220c716a98a7f22e22f488d ]
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 stummala@codeaurora.org Reviewed-by: Chao Yu yuchao0@huawei.com Signed-off-by: Jaegeuk Kim jaegeuk@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- fs/f2fs/checkpoint.c | 5 +++-- fs/f2fs/node.c | 4 +++- fs/f2fs/super.c | 44 +++++++++++++++++++++++++++++++++----------- 3 files changed, 39 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 5892fa3c885f..144ffba3ec5a 100644 --- a/fs/f2fs/super.c +++ b/fs/f2fs/super.c @@ -1460,9 +1460,16 @@ 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); @@ -1470,18 +1477,24 @@ 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; }
- 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; @@ -1490,7 +1503,9 @@ 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) @@ -3359,7 +3374,7 @@ 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); } @@ -3372,7 +3387,7 @@ 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);
@@ -3394,6 +3409,11 @@ 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); @@ -3407,6 +3427,8 @@ static int f2fs_fill_super(struct super_block *sb, void *data, int silent) * falls into an infinite loop in f2fs_sync_meta_pages(). */ truncate_inode_pages_final(META_MAPPING(sbi)); + /* evict some inodes being cached by GC */ + evict_inodes(sb); f2fs_unregister_sysfs(sbi); free_root_inode: dput(sb->s_root);