From: Christophe Leroy <christophe.leroy@csgroup.eu>
To: Nicholas Piggin <npiggin@gmail.com>,
Andrew Morton <akpm@linux-foundation.org>
Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org
Subject: [PATCH] mm/ioremap: Fix iomap_max_page_shift
Date: Sat, 1 May 2021 07:58:59 +0000 (UTC) [thread overview]
Message-ID: <0d615a242c4470462da547dc332e4ec5f00479dd.1619855673.git.christophe.leroy@csgroup.eu> (raw)
iomap_max_page_shift is expected to contain a page shift,
so it can't be a 'bool', has to be an 'unsigned int'
And fix the default values: P4D_SHIFT is when huge iomap is allowed.
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Fixes: bbc180a5adb0 ("mm: HUGE_VMAP arch support cleanup")
---
mm/ioremap.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/mm/ioremap.c b/mm/ioremap.c
index d1dcc7e744ac..2f7193c6a99e 100644
--- a/mm/ioremap.c
+++ b/mm/ioremap.c
@@ -16,16 +16,16 @@
#include "pgalloc-track.h"
#ifdef CONFIG_HAVE_ARCH_HUGE_VMAP
-static bool __ro_after_init iomap_max_page_shift = PAGE_SHIFT;
+static unsigned int __ro_after_init iomap_max_page_shift = P4D_SHIFT;
static int __init set_nohugeiomap(char *str)
{
- iomap_max_page_shift = P4D_SHIFT;
+ iomap_max_page_shift = PAGE_SHIFT;
return 0;
}
early_param("nohugeiomap", set_nohugeiomap);
#else /* CONFIG_HAVE_ARCH_HUGE_VMAP */
-static const bool iomap_max_page_shift = PAGE_SHIFT;
+static const unsigned int iomap_max_page_shift = PAGE_SHIFT;
#endif /* CONFIG_HAVE_ARCH_HUGE_VMAP */
int ioremap_page_range(unsigned long addr,
--
2.25.0
next reply other threads:[~2021-05-01 7:59 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-01 7:58 Christophe Leroy [this message]
2021-05-02 10:36 ` [PATCH] mm/ioremap: Fix iomap_max_page_shift Nicholas Piggin
2021-05-04 11:29 ` Anshuman Khandual
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=0d615a242c4470462da547dc332e4ec5f00479dd.1619855673.git.christophe.leroy@csgroup.eu \
--to=christophe.leroy@csgroup.eu \
--cc=akpm@linux-foundation.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=npiggin@gmail.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).