Re: [PATCH] mm: Don't bother dropping mmap_sem for zero size readahead

On Thu, Jul 30, 2020 at 01:34:35PM +0200, SeongJae Park wrote:

Hello,

The commit fixed by this patch[1] was merged in v5.1 and this patch was merged in the mainline in v5.7 (5c72feee3e45b40a3c96c7145ec422899d0e8964). Thus, the issue affects [v5.1, v5.6]. I was also able to reproduce the issue and confirm the fix works on v5.4 based kernels.

However, I couldn't find this fix in neither latest stable/linux-5.4.y, nor stable-queue/master. Could you please put this patch in the queue?

[1] https://lore.kernel.org/linux-mm/20200212101356.30759-1-jack@suse.cz/

Now queued up, thanks.

greg k-h