This is a note to let you know that I've just added the patch titled ext4: fast commit may miss tracking unwritten range during ftruncate to the 5.10-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: ext4-fast-commit-may-miss-tracking-unwritten-range-during-ftruncate.patch and it can be found in the queue-5.10 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From 9725958bb75cdfa10f2ec11526fdb23e7485e8e4 Mon Sep 17 00:00:00 2001 From: Xin Yin <yinxin.x@xxxxxxxxxxxxx> Date: Thu, 23 Dec 2021 11:23:37 +0800 Subject: ext4: fast commit may miss tracking unwritten range during ftruncate From: Xin Yin <yinxin.x@xxxxxxxxxxxxx> commit 9725958bb75cdfa10f2ec11526fdb23e7485e8e4 upstream. If use FALLOC_FL_KEEP_SIZE to alloc unwritten range at bottom, the inode->i_size will not include the unwritten range. When call ftruncate with fast commit enabled, it will miss to track the unwritten range. Change to trace the full range during ftruncate. Signed-off-by: Xin Yin <yinxin.x@xxxxxxxxxxxxx> Reviewed-by: Harshad Shirwadkar <harshadshirwadkar@xxxxxxxxx> Link: https://lore.kernel.org/r/20211223032337.5198-3-yinxin.x@xxxxxxxxxxxxx Signed-off-by: Theodore Ts'o <tytso@xxxxxxx> Cc: stable@xxxxxxxxxx Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- fs/ext4/inode.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) --- a/fs/ext4/inode.c +++ b/fs/ext4/inode.c @@ -5468,8 +5468,7 @@ int ext4_setattr(struct dentry *dentry, ext4_fc_track_range(handle, inode, (attr->ia_size > 0 ? attr->ia_size - 1 : 0) >> inode->i_sb->s_blocksize_bits, - (oldsize > 0 ? oldsize - 1 : 0) >> - inode->i_sb->s_blocksize_bits); + EXT_MAX_BLOCKS - 1); else ext4_fc_track_range( handle, inode, Patches currently in stable-queue which might be from yinxin.x@xxxxxxxxxxxxx are queue-5.10/ext4-fast-commit-may-miss-tracking-unwritten-range-during-ftruncate.patch queue-5.10/ext4-use-ext4_ext_remove_space-for-fast-commit-replay-delete-range.patch queue-5.10/ext4-fix-fast-commit-may-miss-tracking-range-for-falloc_fl_zero_range.patch