From 20872584b8c0b006c007da9588a272c9e28d2e18 Mon Sep 17 00:00:00 2001 From: Chao Yu Date: Sun, 28 May 2023 15:47:12 +0800 Subject: [PATCH] f2fs: fix to drop all dirty meta/node pages during umount() For cp error case, there will be dirty meta/node pages remained after f2fs_write_checkpoint() in f2fs_put_super(), drop them explicitly, and do sanity check on reference count of dirty pages and inflight IOs. Signed-off-by: Chao Yu Signed-off-by: Jaegeuk Kim --- fs/f2fs/super.c | 18 ++++++++++++++++-- 1 file changed, 16 insertions(+), 2 deletions(-) diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c index ee390c398e1c1..2936bc870f5c3 100644 --- a/fs/f2fs/super.c +++ b/fs/f2fs/super.c @@ -1571,6 +1571,7 @@ static void f2fs_put_super(struct super_block *sb) { struct f2fs_sb_info *sbi = F2FS_SB(sb); int i; + int err = 0; bool done; /* unregister procfs/sysfs entries in advance to avoid race case */ @@ -1597,7 +1598,7 @@ static void f2fs_put_super(struct super_block *sb) struct cp_control cpc = { .reason = CP_UMOUNT, }; - f2fs_write_checkpoint(sbi, &cpc); + err = f2fs_write_checkpoint(sbi, &cpc); } /* be sure to wait for any on-going discard commands */ @@ -1606,7 +1607,7 @@ static void f2fs_put_super(struct super_block *sb) struct cp_control cpc = { .reason = CP_UMOUNT | CP_TRIMMED, }; - f2fs_write_checkpoint(sbi, &cpc); + err = f2fs_write_checkpoint(sbi, &cpc); } /* @@ -1623,6 +1624,19 @@ static void f2fs_put_super(struct super_block *sb) f2fs_wait_on_all_pages(sbi, F2FS_WB_CP_DATA); + if (err) { + truncate_inode_pages_final(NODE_MAPPING(sbi)); + truncate_inode_pages_final(META_MAPPING(sbi)); + } + + for (i = 0; i < NR_COUNT_TYPE; i++) { + if (!get_pages(sbi, i)) + continue; + f2fs_err(sbi, "detect filesystem reference count leak during " + "umount, type: %d, count: %lld", i, get_pages(sbi, i)); + f2fs_bug_on(sbi, 1); + } + f2fs_bug_on(sbi, sbi->fsync_node_num); f2fs_destroy_compress_inode(sbi); -- 2.30.2