From: Xin Yin yinxin.x@bytedance.com
stable inclusion from stable-v5.10.94 commit f26b24b4c115f9c8fe8defd2c158420d30b7af0f bugzilla: https://gitee.com/openeuler/kernel/issues/I531X9
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
--------------------------------
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@bytedance.com Reviewed-by: Harshad Shirwadkar harshadshirwadkar@gmail.com Link: https://lore.kernel.org/r/20211223032337.5198-3-yinxin.x@bytedance.com Signed-off-by: Theodore Ts'o tytso@mit.edu Cc: stable@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Zheng Zengkai zhengzengkai@huawei.com Acked-by: Xie XiuQi xiexiuqi@huawei.com --- 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 9d8c01898a2d..9b2afb51d93e 100644 --- a/fs/ext4/inode.c +++ b/fs/ext4/inode.c @@ -5433,8 +5433,7 @@ int ext4_setattr(struct dentry *dentry, struct iattr *attr) 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,