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 5/8] ext4: use memcpy_from_page() in pagecache_read()
Date: Sun, 7 Feb 2021 11:04:22 -0800 [thread overview]
Message-ID: <20210207190425.38107-6-chaitanya.kulkarni@wdc.com> (raw)
In-Reply-To: <20210207190425.38107-1-chaitanya.kulkarni@wdc.com>
Signed-off-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
---
fs/ext4/verity.c | 5 +----
1 file changed, 1 insertion(+), 4 deletions(-)
diff --git a/fs/ext4/verity.c b/fs/ext4/verity.c
index 5b7ba8f71153..c8e07f8a792d 100644
--- a/fs/ext4/verity.c
+++ b/fs/ext4/verity.c
@@ -45,16 +45,13 @@ static int pagecache_read(struct inode *inode, void *buf, size_t count,
size_t n = min_t(size_t, count,
PAGE_SIZE - offset_in_page(pos));
struct page *page;
- void *addr;
page = read_mapping_page(inode->i_mapping, pos >> PAGE_SHIFT,
NULL);
if (IS_ERR(page))
return PTR_ERR(page);
- addr = kmap_atomic(page);
- memcpy(buf, addr + offset_in_page(pos), n);
- kunmap_atomic(addr);
+ memcpy_from_page(buf, page, offset_in_page(pos), n);
put_page(page);
--
2.22.1
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next prev parent reply other threads:[~2021-02-07 19:05 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-02-07 19:04 [f2fs-dev] [RFC PATCH 0/8] use core page calls instead of kmaps Chaitanya Kulkarni
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 19:04 ` [f2fs-dev] [RFC PATCH 2/8] " Chaitanya Kulkarni
2021-02-08 4:35 ` Ira Weiny
2021-02-08 5:47 ` Chaitanya Kulkarni
2021-02-07 19:04 ` [f2fs-dev] [RFC PATCH 3/8] null_blk: use memcpy_page() in copy_to_nullb() Chaitanya Kulkarni
2021-02-07 19:04 ` [f2fs-dev] [RFC PATCH 4/8] null_blk: use memcpy_page() in copy_from_nullb() Chaitanya Kulkarni
2021-02-07 19:04 ` Chaitanya Kulkarni [this message]
2021-02-07 19:04 ` [f2fs-dev] [RFC PATCH 6/8] ext4: use memcpy_to_page() in pagecache_write() Chaitanya Kulkarni
2021-03-25 14:22 ` Theodore Ts'o
2021-03-25 15:09 ` Ira Weiny
2021-03-25 15:10 ` Ira Weiny
2021-02-07 19:04 ` [f2fs-dev] [RFC PATCH 7/8] f2fs: use memcpy_from_page() in pagecache_read() Chaitanya Kulkarni
2021-02-07 19:04 ` [f2fs-dev] [RFC PATCH 8/8] f2fs: use memcpy_to_page() in pagecache_write() Chaitanya Kulkarni
2021-02-10 18:01 ` Eric Biggers
2021-02-10 19:41 ` Chaitanya Kulkarni
2021-02-07 19:10 ` [f2fs-dev] [RFC PATCH 0/8] use core page calls instead of kmaps Chaitanya Kulkarni
2021-02-08 4:42 ` Ira Weiny
2021-02-08 5:47 ` Chaitanya Kulkarni
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