export RK_PA3

hc

2024-02-19 151fecfb72a0d602dfe79790602ef64b4e241574

 kernel/fs/ext4/verity.c
..
..
@@ -79,8 +79,7 @@
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 		size_t n = min_t(size_t, count,
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 				 PAGE_SIZE - offset_in_page(pos));
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 		struct page *page;
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-		void *fsdata;
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-		void *addr;
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+		void *fsdata = NULL;
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 		int res;
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 		res = pagecache_write_begin(NULL, inode->i_mapping, pos, n, 0,
..
..
@@ -88,9 +87,7 @@
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 		if (res)
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 			return res;
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-		addr = kmap_atomic(page);
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-		memcpy(addr + offset_in_page(pos), buf, n);
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-		kunmap_atomic(addr);
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+		memcpy_to_page(page, offset_in_page(pos), buf, n);
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 		res = pagecache_write_end(NULL, inode->i_mapping, pos, n, n,
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 					  page, fsdata);