netdev - [PATCH RFC PKS/PMEM 24/58] fs/freevxfs: Utilize new kmap

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Message-Id: <20201009195033.3208459-25-ira.weiny@intel.com>
Date:   Fri,  9 Oct 2020 12:49:59 -0700
From:   ira.weiny@...el.com
To:     Andrew Morton <akpm@...ux-foundation.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        Andy Lutomirski <luto@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>
Cc:     Ira Weiny <ira.weiny@...el.com>,
        Christoph Hellwig <hch@...radead.org>, x86@...nel.org,
        Dave Hansen <dave.hansen@...ux.intel.com>,
        Dan Williams <dan.j.williams@...el.com>,
        Fenghua Yu <fenghua.yu@...el.com>, linux-doc@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-nvdimm@...ts.01.org,
        linux-fsdevel@...r.kernel.org, linux-mm@...ck.org,
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Subject: [PATCH RFC PKS/PMEM 24/58] fs/freevxfs: Utilize new kmap_thread()

From: Ira Weiny <ira.weiny@...el.com>

The kmap() calls in this FS are localized to a single thread.  To avoid
the over head of global PKRS updates use the new kmap_thread() call.

Cc: Christoph Hellwig <hch@...radead.org>
Signed-off-by: Ira Weiny <ira.weiny@...el.com>
---
 fs/freevxfs/vxfs_immed.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/fs/freevxfs/vxfs_immed.c b/fs/freevxfs/vxfs_immed.c
index bfc780c682fb..9c42fec4cd85 100644
--- a/fs/freevxfs/vxfs_immed.c
+++ b/fs/freevxfs/vxfs_immed.c
@@ -69,9 +69,9 @@ vxfs_immed_readpage(struct file *fp, struct page *pp)
 	u_int64_t	offset = (u_int64_t)pp->index << PAGE_SHIFT;
 	caddr_t		kaddr;
 
-	kaddr = kmap(pp);
+	kaddr = kmap_thread(pp);
 	memcpy(kaddr, vip->vii_immed.vi_immed + offset, PAGE_SIZE);
-	kunmap(pp);
+	kunmap_thread(pp);
 	
 	flush_dcache_page(pp);
 	SetPageUptodate(pp);
-- 
2.28.0.rc0.12.gb6a658bd00c9