[PATCH] ocfs2: use generic_segment_checks
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
diff --git a/fs/ocfs2/file.c b/fs/ocfs2/file.c
index d459eb9..ac6c964 100644
--- a/fs/ocfs2/file.c
+++ b/fs/ocfs2/file.c
@@ -1419,36 +1419,6 @@
return total ? total : ret;
}
-static int ocfs2_check_iovec(const struct iovec *iov, size_t *counted,
- unsigned long *nr_segs)
-{
- size_t ocount; /* original count */
- unsigned long seg;
-
- ocount = 0;
- for (seg = 0; seg < *nr_segs; seg++) {
- const struct iovec *iv = &iov[seg];
-
- /*
- * If any segment has a negative length, or the cumulative
- * length ever wraps negative then return -EINVAL.
- */
- ocount += iv->iov_len;
- if (unlikely((ssize_t)(ocount|iv->iov_len) < 0))
- return -EINVAL;
- if (access_ok(VERIFY_READ, iv->iov_base, iv->iov_len))
- continue;
- if (seg == 0)
- return -EFAULT;
- *nr_segs = seg;
- ocount -= iv->iov_len; /* This segment is no good */
- break;
- }
-
- *counted = ocount;
- return 0;
-}
-
static ssize_t ocfs2_file_aio_write(struct kiocb *iocb,
const struct iovec *iov,
unsigned long nr_segs,
@@ -1471,7 +1441,7 @@
if (iocb->ki_left == 0)
return 0;
- ret = ocfs2_check_iovec(iov, &ocount, &nr_segs);
+ ret = generic_segment_checks(iov, &nr_segs, &ocount, VERIFY_READ);
if (ret)
return ret;