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Subject[PATCH] fs/buffer.c: use lowmem_page_address instead of page_address
Date
Here, the page has been identified as lowmem already. So, calling
lowmem_page_address() directly is a little cheaper than page_address().

Signed-off-by: Heesub Shin <heesub.shin@samsung.com>
Cc: Dongjun Shin <d.j.shin@samsung.com>
---
fs/buffer.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/buffer.c b/fs/buffer.c
index 695eb14..ccc2c7b 100644
--- a/fs/buffer.c
+++ b/fs/buffer.c
@@ -1464,7 +1464,7 @@ void set_bh_page(struct buffer_head *bh,
*/
bh->b_data = (char *)(0 + offset);
else
- bh->b_data = page_address(page) + offset;
+ bh->b_data = lowmem_page_address(page) + offset;
}
EXPORT_SYMBOL(set_bh_page);

--
1.8.3.2


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