On Thu, Apr 17, 2025 at 05:10:53PM -0400, Stefan Hajnoczi wrote:
> The Linux BLKZEROOUT ioctl is only invoked when BDRV_O_NOCACHE is set
> because old kernels did not invalidate the page cache. In that case
> mixing BLKZEROOUT with buffered I/O could lead to corruption.
>
> However, Linux 4.9 comm
The Linux BLKZEROOUT ioctl is only invoked when BDRV_O_NOCACHE is set
because old kernels did not invalidate the page cache. In that case
mixing BLKZEROOUT with buffered I/O could lead to corruption.
However, Linux 4.9 commit 22dd6d356628 ("block: invalidate the page
cache when issuing BLKZEROOUT"
