[Kernel] Re: [PATCH OpenHarmony-5.10 18/18] xfs: map unwritten blocks in XFS_IOC_{ALLOC,FREE}SP just like fallocate

在 2022/1/24 9:03, yiyuchangchun@126.com 写道:

From: "Darrick J. Wong"

mainline inclusion from mainline-v5.16-rc5 commit 983d8e60f50806f90534cc5373d0ce867e5aaf79 category: bugfix issue: #I4RVJ4 CVE: CVE-2021-4155

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?i...

Signed-off-by: Yu Changchun --------------------------------

The old ALLOCSP/FREESP ioctls in XFS can be used to preallocate space at the end of files, just like fallocate and RESVSP. Make the behavior consistent with the other ioctls.

Reported-by: Kirill Tkhai Signed-off-by: Darrick J. Wong Signed-off-by: Darrick J. Wong Reviewed-by: Dave Chinner Reviewed-by: Eric Sandeen Signed-off-by: Guo Xuenan Reviewed-by: Zhang Yi Reviewed-by: Xiu Jianfeng Signed-off-by: Zheng Zengkai Signed-off-by: Yu Changchun --- fs/xfs/xfs_ioctl.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)

Reviewed-by: Wei Yongjun