[patch 13/21] vfs: remove redundant position check in do_sendfile

[akpm@linux-foundation.org]

From: Jeff Layton <jlayton@redhat.com>

As Johannes Weiner pointed out, one of the range checks in do_sendfile
is redundant and is already checked in rw_verify_area.

Signed-off-by: Jeff Layton <jlayton@redhat.com>
Reviewed-by: Johannes Weiner <hannes@cmpxchg.org>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Robert Love <rlove@google.com>
Cc: Mandeep Singh Baines <msb@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 fs/read_write.c |    3 ---
 1 file changed, 3 deletions(-)

diff -puN fs/read_write.c~vfs-remove-redundant-position-check-in-do_sendfile fs/read_write.c
--- a/fs/read_write.c~vfs-remove-redundant-position-check-in-do_sendfile
+++ a/fs/read_write.c
@@ -839,9 +839,6 @@ static ssize_t do_sendfile(int out_fd, i
 		max = min(in_inode->i_sb->s_maxbytes, out_inode->i_sb->s_maxbytes);
 
 	pos = *ppos;
-	retval = -EINVAL;
-	if (unlikely(pos < 0))
-		goto fput_out;
 	if (unlikely(pos + count > max)) {
 		retval = -EOVERFLOW;
 		if (pos >= max)
_