[PATCH v2 07/14] ntfs3: replace ll_rw_block()

Zhang Yi <[email protected]>
Newsgroups gmane.comp.file-systems.reiserfs.general,gmane.comp.file-systems.ext4,gmane.linux.file-systems,gmane.linux.kernel,gmane.linux.cluster.redhat.cluster.devel,gmane.comp.file-systems.ocfs2.devel
Message-ID <[email protected]>
ll_rw_block() is not safe for the sync read path because it cannot
guarantee that submitting read IO if the buffer has been locked. We
could get false positive EIO after wait_on_buffer() if the buffer has
been locked by others. So stop using ll_rw_block() in
ntfs_get_block_vbo().

Signed-off-by: Zhang Yi <[email protected]>
---
 fs/ntfs3/inode.c | 7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

diff --git a/fs/ntfs3/inode.c b/fs/ntfs3/inode.c
index 51363d4e8636..cadbfa111539 100644
--- a/fs/ntfs3/inode.c
+++ b/fs/ntfs3/inode.c
@@ -630,12 +630,9 @@ static noinline int ntfs_get_block_vbo(struct inode *inode, u64 vbo,
 			bh->b_size = block_size;
 			off = vbo & (PAGE_SIZE - 1);
 			set_bh_page(bh, page, off);
-			ll_rw_block(REQ_OP_READ, 1, &bh);
-			wait_on_buffer(bh);
-			if (!buffer_uptodate(bh)) {
-				err = -EIO;
+			err = bh_read(bh, 0);
+			if (err < 0)
 				goto out;
-			}
 			zero_user_segment(page, off + voff, off + block_size);
 		}
 	}
-- 
2.31.1
lmpx.com only provides a reader for public news (NNTP) servers. It is not affiliated with the servers or forums shown here and is not responsible for the content of articles, which is written by their respective authors.