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From: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
To: linux-block@vger.kernel.org, linux-ext4@vger.kernel.org,
	linux-f2fs-devel@lists.sourceforge.net,
	linux-fsdevel@vger.kernel.org
Cc: axboe@kernel.dk, tytso@mit.edu, adilger.kernel@dilger.ca,
	jaegeuk@kernel.org, chao@kernel.org, johannes.thumshirn@wdc.com,
	damien.lemoal@wdc.com, bvanassche@acm.org,
	chaitanya.kulkarni@wdc.com, dongli.zhang@oracle.com, clm@fb.com,
	ira.weiny@intel.com, dsterba@suse.com, ebiggers@kernel.org,
	hch@infradead.org, dave.hansen@intel.com
Subject: [RFC PATCH 1/8] brd: use memcpy_from_page() in copy_from_brd()
Date: Sun,  7 Feb 2021 11:04:18 -0800	[thread overview]
Message-ID: <20210207190425.38107-2-chaitanya.kulkarni@wdc.com> (raw)
In-Reply-To: <20210207190425.38107-1-chaitanya.kulkarni@wdc.com>

Signed-off-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
---
 drivers/block/brd.c | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

diff --git a/drivers/block/brd.c b/drivers/block/brd.c
index cb5c872ac9b2..d41b7d489e9f 100644
--- a/drivers/block/brd.c
+++ b/drivers/block/brd.c
@@ -226,11 +226,9 @@ static void copy_from_brd(void *dst, struct brd_device *brd,
 
 	copy = min_t(size_t, n, PAGE_SIZE - offset);
 	page = brd_lookup_page(brd, sector);
-	if (page) {
-		src = kmap_atomic(page);
-		memcpy(dst, src + offset, copy);
-		kunmap_atomic(src);
-	} else
+	if (page)
+		memcpy_from_page(dst, page, offset, copy);
+	else
 		memset(dst, 0, copy);
 
 	if (copy < n) {
-- 
2.22.1


WARNING: multiple messages have this Message-ID (diff)
From: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
To: linux-block@vger.kernel.org, linux-ext4@vger.kernel.org,
	linux-f2fs-devel@lists.sourceforge.net,
	linux-fsdevel@vger.kernel.org
Cc: axboe@kernel.dk, hch@infradead.org, damien.lemoal@wdc.com,
	tytso@mit.edu, bvanassche@acm.org, chaitanya.kulkarni@wdc.com,
	dave.hansen@intel.com, johannes.thumshirn@wdc.com,
	ebiggers@kernel.org, clm@fb.com, adilger.kernel@dilger.ca,
	dongli.zhang@oracle.com, dsterba@suse.com, jaegeuk@kernel.org,
	ira.weiny@intel.com
Subject: [f2fs-dev] [RFC PATCH 1/8] brd: use memcpy_from_page() in copy_from_brd()
Date: Sun,  7 Feb 2021 11:04:18 -0800	[thread overview]
Message-ID: <20210207190425.38107-2-chaitanya.kulkarni@wdc.com> (raw)
In-Reply-To: <20210207190425.38107-1-chaitanya.kulkarni@wdc.com>

Signed-off-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
---
 drivers/block/brd.c | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

diff --git a/drivers/block/brd.c b/drivers/block/brd.c
index cb5c872ac9b2..d41b7d489e9f 100644
--- a/drivers/block/brd.c
+++ b/drivers/block/brd.c
@@ -226,11 +226,9 @@ static void copy_from_brd(void *dst, struct brd_device *brd,
 
 	copy = min_t(size_t, n, PAGE_SIZE - offset);
 	page = brd_lookup_page(brd, sector);
-	if (page) {
-		src = kmap_atomic(page);
-		memcpy(dst, src + offset, copy);
-		kunmap_atomic(src);
-	} else
+	if (page)
+		memcpy_from_page(dst, page, offset, copy);
+	else
 		memset(dst, 0, copy);
 
 	if (copy < n) {
-- 
2.22.1



_______________________________________________
Linux-f2fs-devel mailing list
Linux-f2fs-devel@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel

  reply	other threads:[~2021-02-07 19:06 UTC|newest]

Thread overview: 40+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-02-07 19:04 [RFC PATCH 0/8] use core page calls instead of kmaps Chaitanya Kulkarni
2021-02-07 19:04 ` [f2fs-dev] " Chaitanya Kulkarni
2021-02-07 19:04 ` Chaitanya Kulkarni [this message]
2021-02-07 19:04   ` [f2fs-dev] [RFC PATCH 1/8] brd: use memcpy_from_page() in copy_from_brd() Chaitanya Kulkarni
2021-02-07 22:34   ` kernel test robot
2021-02-07 19:04 ` [RFC PATCH 2/8] " Chaitanya Kulkarni
2021-02-07 19:04   ` [f2fs-dev] " Chaitanya Kulkarni
2021-02-08  4:35   ` Ira Weiny
2021-02-08  4:35     ` [f2fs-dev] " Ira Weiny
2021-02-08  5:47     ` Chaitanya Kulkarni
2021-02-08  5:47       ` [f2fs-dev] " Chaitanya Kulkarni
2021-02-07 19:04 ` [RFC PATCH 3/8] null_blk: use memcpy_page() in copy_to_nullb() Chaitanya Kulkarni
2021-02-07 19:04   ` [f2fs-dev] " Chaitanya Kulkarni
2021-02-07 19:04 ` [RFC PATCH 4/8] null_blk: use memcpy_page() in copy_from_nullb() Chaitanya Kulkarni
2021-02-07 19:04   ` [f2fs-dev] " Chaitanya Kulkarni
2021-02-07 19:04 ` [RFC PATCH 5/8] ext4: use memcpy_from_page() in pagecache_read() Chaitanya Kulkarni
2021-02-07 19:04   ` [f2fs-dev] " Chaitanya Kulkarni
2021-02-08  1:45   ` kernel test robot
2021-02-07 19:04 ` [RFC PATCH 6/8] ext4: use memcpy_to_page() in pagecache_write() Chaitanya Kulkarni
2021-02-07 19:04   ` [f2fs-dev] " Chaitanya Kulkarni
2021-03-25 14:22   ` Theodore Ts'o
2021-03-25 14:22     ` [f2fs-dev] " Theodore Ts'o
2021-03-25 15:09     ` Ira Weiny
2021-03-25 15:09       ` [f2fs-dev] " Ira Weiny
2021-03-25 15:10     ` Ira Weiny
2021-03-25 15:10       ` [f2fs-dev] " Ira Weiny
2021-02-07 19:04 ` [RFC PATCH 7/8] f2fs: use memcpy_from_page() in pagecache_read() Chaitanya Kulkarni
2021-02-07 19:04   ` [f2fs-dev] " Chaitanya Kulkarni
2021-02-07 19:04 ` [RFC PATCH 8/8] f2fs: use memcpy_to_page() in pagecache_write() Chaitanya Kulkarni
2021-02-07 19:04   ` [f2fs-dev] " Chaitanya Kulkarni
2021-02-10 18:01   ` Eric Biggers
2021-02-10 18:01     ` [f2fs-dev] " Eric Biggers
2021-02-10 19:41     ` Chaitanya Kulkarni
2021-02-10 19:41       ` [f2fs-dev] " Chaitanya Kulkarni
2021-02-07 19:10 ` [RFC PATCH 0/8] use core page calls instead of kmaps Chaitanya Kulkarni
2021-02-07 19:10   ` [f2fs-dev] " Chaitanya Kulkarni
2021-02-08  4:42   ` Ira Weiny
2021-02-08  4:42     ` [f2fs-dev] " Ira Weiny
2021-02-08  5:47     ` Chaitanya Kulkarni
2021-02-08  5:47       ` [f2fs-dev] " Chaitanya Kulkarni

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