libceph: drop return value from page vector copy routines
The return values provided for ceph_copy_to_page_vector() and
ceph_copy_from_page_vector() serve no purpose, so get rid of them.
Signed-off-by: Alex Elder <elder@inktank.com>
Reviewed-by: Josh Durgin <josh.durgin@inktank.com>
diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c
index c259b40..b0eea3e 100644
--- a/drivers/block/rbd.c
+++ b/drivers/block/rbd.c
@@ -1890,8 +1890,7 @@
if (ret < 0)
goto out;
ret = 0;
- (void) ceph_copy_from_page_vector(pages, inbound, 0,
- obj_request->xferred);
+ ceph_copy_from_page_vector(pages, inbound, 0, obj_request->xferred);
if (version)
*version = obj_request->version;
out:
@@ -2089,7 +2088,7 @@
rbd_assert(obj_request->xferred <= (u64) SIZE_MAX);
size = (size_t) obj_request->xferred;
- (void) ceph_copy_from_page_vector(pages, buf, 0, size);
+ ceph_copy_from_page_vector(pages, buf, 0, size);
rbd_assert(size <= (size_t) INT_MAX);
ret = (int) size;
if (version)
diff --git a/include/linux/ceph/libceph.h b/include/linux/ceph/libceph.h
index 2250f8b..29818fc 100644
--- a/include/linux/ceph/libceph.h
+++ b/include/linux/ceph/libceph.h
@@ -232,10 +232,10 @@
extern int ceph_copy_user_to_page_vector(struct page **pages,
const void __user *data,
loff_t off, size_t len);
-extern int ceph_copy_to_page_vector(struct page **pages,
+extern void ceph_copy_to_page_vector(struct page **pages,
const void *data,
loff_t off, size_t len);
-extern int ceph_copy_from_page_vector(struct page **pages,
+extern void ceph_copy_from_page_vector(struct page **pages,
void *data,
loff_t off, size_t len);
extern int ceph_copy_page_vector_to_user(struct page **pages, void __user *data,
diff --git a/net/ceph/pagevec.c b/net/ceph/pagevec.c
index 5b20be9..815a224 100644
--- a/net/ceph/pagevec.c
+++ b/net/ceph/pagevec.c
@@ -118,17 +118,17 @@
}
EXPORT_SYMBOL(ceph_copy_user_to_page_vector);
-int ceph_copy_to_page_vector(struct page **pages,
+void ceph_copy_to_page_vector(struct page **pages,
const void *data,
loff_t off, size_t len)
{
int i = 0;
size_t po = off & ~PAGE_CACHE_MASK;
size_t left = len;
- size_t l;
while (left > 0) {
- l = min_t(size_t, PAGE_CACHE_SIZE-po, left);
+ size_t l = min_t(size_t, PAGE_CACHE_SIZE-po, left);
+
memcpy(page_address(pages[i]) + po, data, l);
data += l;
left -= l;
@@ -138,21 +138,20 @@
i++;
}
}
- return len;
}
EXPORT_SYMBOL(ceph_copy_to_page_vector);
-int ceph_copy_from_page_vector(struct page **pages,
+void ceph_copy_from_page_vector(struct page **pages,
void *data,
loff_t off, size_t len)
{
int i = 0;
size_t po = off & ~PAGE_CACHE_MASK;
size_t left = len;
- size_t l;
while (left > 0) {
- l = min_t(size_t, PAGE_CACHE_SIZE-po, left);
+ size_t l = min_t(size_t, PAGE_CACHE_SIZE-po, left);
+
memcpy(data, page_address(pages[i]) + po, l);
data += l;
left -= l;
@@ -162,7 +161,6 @@
i++;
}
}
- return len;
}
EXPORT_SYMBOL(ceph_copy_from_page_vector);