From: Andrea Righi Date: Tue, 27 Oct 2020 04:49:13 +0000 (-0700) Subject: ext4: properly check for dirty state in ext4_inode_datasync_dirty() X-Git-Tag: v5.10.7~1282^2~8 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=d0520df7240f7117226e871453e1b20d12a9614a;p=platform%2Fkernel%2Flinux-rpi.git ext4: properly check for dirty state in ext4_inode_datasync_dirty() ext4_inode_datasync_dirty() needs to return 'true' if the inode is dirty, 'false' otherwise, but the logic seems to be incorrectly changed by commit aa75f4d3daae ("ext4: main fast-commit commit path"). This introduces a problem with swap files that are always failing to be activated, showing this error in dmesg: [ 34.406479] swapon: file is not committed Simple test case to reproduce the problem: # fallocate -l 8G swapfile # chmod 0600 swapfile # mkswap swapfile # swapon swapfile Fix the logic to return the proper state of the inode. Link: https://lore.kernel.org/lkml/20201024131333.GA32124@xps-13-7390 Fixes: 8016e29f4362 ("ext4: fast commit recovery path") Signed-off-by: Andrea Righi Signed-off-by: Harshad Shirwadkar Link: https://lore.kernel.org/r/20201027044915.2553163-1-harshadshirwadkar@gmail.com Signed-off-by: Theodore Ts'o --- diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c index 03c2253005f0..520a0209451e 100644 --- a/fs/ext4/inode.c +++ b/fs/ext4/inode.c @@ -3307,10 +3307,12 @@ static bool ext4_inode_datasync_dirty(struct inode *inode) if (journal) { if (jbd2_transaction_committed(journal, - EXT4_I(inode)->i_datasync_tid)) - return true; - return atomic_read(&EXT4_SB(inode->i_sb)->s_fc_subtid) >= - EXT4_I(inode)->i_fc_committed_subtid; + EXT4_I(inode)->i_datasync_tid)) + return false; + if (test_opt2(inode->i_sb, JOURNAL_FAST_COMMIT)) + return atomic_read(&EXT4_SB(inode->i_sb)->s_fc_subtid) < + EXT4_I(inode)->i_fc_committed_subtid; + return true; } /* Any metadata buffers to write? */