RFC: untangle and fix __blkdev_issue_discard

[Christoph Hellwig]

On Thu, Mar 07, 2024 at 02:05:03PM -0700, Keith Busch wrote:
> On Thu, Mar 07, 2024 at 08:11:47AM -0700, Christoph Hellwig wrote:
> > this tries to address the block for-next oops Chandan reported on XFS.
> > I can't actually reproduce it unfortunately, but this series should
> > sort it out by movign the fatal_signal_pending check out of all but
> > the ioctl path.
> 
> The last patch moves fatal_signal_pending check to blkdev_issue_discard
> path, which has a more users than just the ioctl path. 

That's true.  I guess I actually need to open code blkdev_issue_discard
in the ioctl path or pass a flag (which would be a bit annoying)