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Subject[PATCH] fs: Reset fully_mapped more accurately
Date
Because get_block() might set the buffer mapped, reset fully_mapped
after it is more accurately.

Signed-off-by: Liu Xiang <liu.xiang6@zte.com.cn>
---
fs/buffer.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/buffer.c b/fs/buffer.c
index 52d024b..b2e9167 100644
--- a/fs/buffer.c
+++ b/fs/buffer.c
@@ -2241,7 +2241,6 @@ int block_read_full_page(struct page *page, get_block_t *get_block)
if (!buffer_mapped(bh)) {
int err = 0;

- fully_mapped = 0;
if (iblock < lblock) {
WARN_ON(bh->b_size != blocksize);
err = get_block(inode, iblock, bh, 0);
@@ -2249,6 +2248,7 @@ int block_read_full_page(struct page *page, get_block_t *get_block)
SetPageError(page);
}
if (!buffer_mapped(bh)) {
+ fully_mapped = 0;
zero_user(page, i * blocksize, blocksize);
if (!err)
set_buffer_uptodate(bh);
--
1.9.1
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