From: Christoph Hellwig <hch@infradead.org>
To: David Hildenbrand <david@redhat.com>
Cc: Mark Rutland <mark.rutland@arm.com>,
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Subject: Re: [PATCH v2 0/9] mm: PG_reserved cleanups and documentation
Date: Tue, 15 Jan 2019 07:38:39 -0800 [thread overview]
Message-ID: <20190115153839.GE26443@infradead.org> (raw)
In-Reply-To: <20190114125903.24845-1-david@redhat.com>
On Mon, Jan 14, 2019 at 01:58:54PM +0100, David Hildenbrand wrote:
> Nothing major changed since the last version. I would be happy about
> additional ACKs. If there are no further comments, can this go via the
> mm-tree in one chunk?
>
> I was recently going over all users of PG_reserved. Short story: it is
> difficult and sometimes not really clear if setting/checking for
> PG_reserved is only a relict from the past. Easy to break things. I
> guess I now have a pretty good idea wh things are like that
> nowadays and how they evolved.
Any reason you skipped
drivers/gpu/drm/drm_pci.c:drm_pci_alloc()
and
drivers/gpu/drm/drm_scatter.c:drm_legacy_sg_alloc()
which both look completely bogus as-is?
In fact we should probably just try to kill them off as they have
very few users left.
next prev parent reply other threads:[~2019-01-15 15:41 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-01-14 12:58 [PATCH v2 0/9] mm: PG_reserved cleanups and documentation David Hildenbrand
2019-01-14 12:58 ` [PATCH v2 1/9] agp: efficeon: no need to set PG_reserved on GATT tables David Hildenbrand
2019-01-14 12:58 ` [PATCH v2 2/9] s390/vdso: don't clear PG_reserved David Hildenbrand
2019-01-14 12:58 ` [PATCH v2 3/9] powerpc/vdso: " David Hildenbrand
2019-01-14 12:58 ` [PATCH v2 4/9] riscv/vdso: " David Hildenbrand
2019-01-15 15:36 ` Christoph Hellwig
2019-01-14 12:58 ` [PATCH v2 5/9] m68k/mm: use __ClearPageReserved() David Hildenbrand
2019-01-14 14:02 ` Geert Uytterhoeven
2019-01-14 12:59 ` [PATCH v2 6/9] arm64: kexec: no need to ClearPageReserved() David Hildenbrand
2019-01-14 15:50 ` Bhupesh Sharma
2019-01-25 16:25 ` Catalin Marinas
2019-01-14 12:59 ` [PATCH v2 7/9] arm64: kdump: No need to mark crashkernel pages manually PG_reserved David Hildenbrand
2019-01-14 15:52 ` Bhupesh Sharma
2019-01-25 16:28 ` Catalin Marinas
2019-01-14 12:59 ` [PATCH v2 8/9] ia64: perfmon: Don't mark buffer pages as PG_reserved David Hildenbrand
2019-01-14 12:59 ` [PATCH v2 9/9] mm: better document PG_reserved David Hildenbrand
2019-01-15 15:38 ` Christoph Hellwig [this message]
2019-01-15 15:53 ` [PATCH v2 0/9] mm: PG_reserved cleanups and documentation David Hildenbrand
2019-01-21 11:36 ` David Hildenbrand
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