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libceph: drop return value from page vector copy routines

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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>
This commit is contained in:
Alex Elder 2013-02-06 13:11:38 -06:00
parent 23ed6e13b3
commit 903bb32e89
3 changed files with 10 additions and 13 deletions
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5
drivers/block/rbd.c
View file

@ -1890,8 +1890,7 @@ static int rbd_obj_method_sync(struct rbd_device *rbd_dev,
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 @@ static int rbd_obj_read_sync(struct rbd_device *rbd_dev,
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)

4
include/linux/ceph/libceph.h
View file

@ -232,10 +232,10 @@ extern struct page **ceph_alloc_page_vector(int num_pages, gfp_t flags);
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,

14
net/ceph/pagevec.c
View file

@ -118,17 +118,17 @@ int ceph_copy_user_to_page_vector(struct page **pages,
}
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 @@ int ceph_copy_to_page_vector(struct page **pages,
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 @@ int ceph_copy_from_page_vector(struct page **pages,
i++;
}
}
return len;
}
EXPORT_SYMBOL(ceph_copy_from_page_vector);