From 9725958bb75cdfa10f2ec11526fdb23e7485e8e4 Mon Sep 17 00:00:00 2001 From: Xin Yin Date: Thu, 23 Dec 2021 11:23:37 +0800 Subject: [PATCH] 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 --- fs/ext4/inode.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c index 4895909..08a90e2 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, -- 2.7.4