From: Xin Yin Date: Thu, 23 Dec 2021 03:23:37 +0000 (+0800) Subject: ext4: fast commit may miss tracking unwritten range during ftruncate X-Git-Tag: v6.6.17~8228^2~38 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=9725958bb75cdfa10f2ec11526fdb23e7485e8e4;p=platform%2Fkernel%2Flinux-rpi.git ext4: fast commit may miss tracking unwritten range during ftruncate 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 Reviewed-by: Harshad Shirwadkar Link: https://lore.kernel.org/r/20211223032337.5198-3-yinxin.x@bytedance.com Signed-off-by: Theodore Ts'o Cc: stable@kernel.org --- diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c index 4895909de21b..08a90e25b78b 100644 --- a/fs/ext4/inode.c +++ b/fs/ext4/inode.c @@ -5424,8 +5424,7 @@ int ext4_setattr(struct user_namespace *mnt_userns, 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,