From: "Fabio M. De Francesco" <fmdefrancesco@gmail.com>
To: David Sterba <dsterba@suse.com>, Chris Mason <clm@fb.com>,
Josef Bacik <josef@toxicpanda.com>,
Nick Terrell <terrelln@fb.com>,
linux-btrfs@vger.kernel.org, linux-mm@kvack.org,
linux-kernel@vger.kernel.org, Ira Weiny <ira.weiny@intel.com>,
Andrew Morton <akpm@linux-foundation.org>,
Matthew Wilcox <willy@infradead.org>,
Kees Cook <keescook@chromium.org>,
Sebastian Andrzej Siewior <bigeasy@linutronix.de>,
"James E. J. Bottomley" <James.Bottomley@HansenPartnership.com>,
Helge Deller <deller@gmx.de>,
John David Anglin <dave.anglin@bell.net>,
linux-parisc@vger.kernel.org
Cc: "Fabio M. De Francesco" <fmdefrancesco@gmail.com>
Subject: [PATCH v6 0/2] btrfs: Replace kmap() with kmap_local_page() in zstd.c
Date: Wed, 6 Jul 2022 13:15:18 +0200 [thread overview]
Message-ID: <20220706111520.12858-1-fmdefrancesco@gmail.com> (raw)
This is a little series which serves the purpose to replace kmap() with
kmap_local_page() in btrfs/zstd.c. Actually this task is only accomplished
in patch 2/2.
Instead patch 1/2 is a pre-requisite for the above-mentioned replacement,
however, above all else, it has the purpose to conform the prototypes of
__kunmap_{local,atomic}() to their own correct semantics. Since those
functions don't make changes to the memory pointed by their arguments,
change the type of those arguments to become pointers to const void.
v5 -> v6: Delete an unnecessary assignment in 2/2 (thanks to Ira Weiny).
v4 -> v5: Use plain page_address() for pages which cannot come from Highmem
(instead of kmapping them); remove unnecessary initializations to NULL
in 2/2 (thanks to Ira Weiny).
v3 -> v4: Resend and add linux-mm to the list of recipients (thanks to
Andrew Morton).
Fabio M. De Francesco (2):
highmem: Make __kunmap_{local,atomic}() take "const void *"
btrfs: Replace kmap() with kmap_local_page() in zstd.c
arch/parisc/include/asm/cacheflush.h | 6 ++---
arch/parisc/kernel/cache.c | 2 +-
fs/btrfs/zstd.c | 33 +++++++++++-----------------
include/linux/highmem-internal.h | 10 ++++-----
mm/highmem.c | 2 +-
5 files changed, 23 insertions(+), 30 deletions(-)
--
2.36.1
next reply other threads:[~2022-07-06 11:15 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-07-06 11:15 Fabio M. De Francesco [this message]
2022-07-06 11:15 ` [PATCH v6 1/2] highmem: Make __kunmap_{local,atomic}() take "const void *" Fabio M. De Francesco
2022-07-06 19:07 ` Andrew Morton
2022-07-08 12:47 ` Helge Deller
2022-07-06 11:15 ` [PATCH v6 2/2] btrfs: Replace kmap() with kmap_local_page() in zstd.c Fabio M. De Francesco
2022-07-07 22:12 ` [PATCH v6 0/2] " David Sterba
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