Re: [PATCH] mm: thp: fix a double unlock bug

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On Tue, Jun 01, 2021 at 11:08:49AM +0100, Mel Gorman wrote:
> On Tue, Jun 01, 2021 at 12:24:09PM +0300, Dan Carpenter wrote:
> > We're supposed to be holding the "vmf->ptl" spin_lock when we goto
> > out_map.  The lock is dropped after if finishes cleaning up.
> > 
> > Fixes: 9aff7b33c74a ("mm: thp: refactor NUMA fault handling")
> > Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
> 
> Ouch.
> 
> Acked-by: Mel Gorman <mgorman@xxxxxxx>
> 
> However, that git commit is not stable. Instead of Fixes: I would
> suggest renaming the patch to "mm: thp: refactor NUMA fault handling
> -fix" and replacing Fixes with "This patch is a fix to the mmotm patch
> mm-thp-refactor-numa-fault-handling.patch". Andrew usually slots that
> into the correct place in his quilt series and collapses the fixes before
> sending to Linus which works better with bisection.

I know that these normally get folded in, but I assumed that Andrew
would want the Fixes tag so that he could fold them in automatically
using a mutt alias. #OneClickShopping

regards,
dan carpenter




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