From 8016e29f4362e285f0f7e38fadc61a5b7bdfdfa2 Mon Sep 17 00:00:00 2001 From: Harshad Shirwadkar Date: Thu, 15 Oct 2020 13:37:59 -0700 Subject: ext4: fast commit recovery path This patch adds fast commit recovery path support for Ext4 file system. We add several helper functions that are similar in spirit to e2fsprogs journal recovery path handlers. Example of such functions include - a simple block allocator, idempotent block bitmap update function etc. Using these routines and the fast commit log in the fast commit area, the recovery path (ext4_fc_replay()) performs fast commit log recovery. Reported-by: kernel test robot Signed-off-by: Harshad Shirwadkar Link: https://lore.kernel.org/r/20201015203802.3597742-8-harshadshirwadkar@gmail.com Signed-off-by: Theodore Ts'o --- fs/ext4/balloc.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) (limited to 'fs/ext4/balloc.c') diff --git a/fs/ext4/balloc.c b/fs/ext4/balloc.c index dea738ba2acd..1d640b145637 100644 --- a/fs/ext4/balloc.c +++ b/fs/ext4/balloc.c @@ -368,7 +368,12 @@ static int ext4_validate_block_bitmap(struct super_block *sb, struct buffer_head *bh) { ext4_fsblk_t blk; - struct ext4_group_info *grp = ext4_get_group_info(sb, block_group); + struct ext4_group_info *grp; + + if (EXT4_SB(sb)->s_mount_state & EXT4_FC_REPLAY) + return 0; + + grp = ext4_get_group_info(sb, block_group); if (buffer_verified(bh)) return 0; -- cgit v1.2.3