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authorAlex Elder <elder@inktank.com>2013-02-14 12:16:43 -0600
committerSage Weil <sage@inktank.com>2013-05-01 21:16:24 -0700
commit2794a82a11cfeae0890741b18b0049ddb55ce646 (patch)
tree9dc71c4a7d95fceed3942418586c5ced230ecdc2 /fs/ceph/addr.c
parent153e5167e0e237faaefb7adf82db5748c1452d73 (diff)
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libceph: separate osd request data info
Pull the fields in an osd request structure that define the data for the request out into a separate structure. Signed-off-by: Alex Elder <elder@inktank.com> Reviewed-by: Josh Durgin <josh.durgin@inktank.com>
Diffstat (limited to 'fs/ceph/addr.c')
-rw-r--r--fs/ceph/addr.c55
1 files changed, 28 insertions, 27 deletions
diff --git a/fs/ceph/addr.c b/fs/ceph/addr.c
index e324222acc82..3a1a77b0ae9f 100644
--- a/fs/ceph/addr.c
+++ b/fs/ceph/addr.c
@@ -243,8 +243,8 @@ static void finish_read(struct ceph_osd_request *req, struct ceph_msg *msg)
dout("finish_read %p req %p rc %d bytes %d\n", inode, req, rc, bytes);
/* unlock all pages, zeroing any data we didn't read */
- for (i = 0; i < req->r_num_pages; i++, bytes -= PAGE_CACHE_SIZE) {
- struct page *page = req->r_pages[i];
+ for (i = 0; i < req->r_data.num_pages; i++, bytes -= PAGE_CACHE_SIZE) {
+ struct page *page = req->r_data.pages[i];
if (bytes < (int)PAGE_CACHE_SIZE) {
/* zero (remainder of) page */
@@ -258,7 +258,7 @@ static void finish_read(struct ceph_osd_request *req, struct ceph_msg *msg)
unlock_page(page);
page_cache_release(page);
}
- kfree(req->r_pages);
+ kfree(req->r_data.pages);
}
static void ceph_unlock_page_vector(struct page **pages, int num_pages)
@@ -336,9 +336,9 @@ static int start_read(struct inode *inode, struct list_head *page_list, int max)
}
pages[i] = page;
}
- req->r_pages = pages;
- req->r_num_pages = nr_pages;
- req->r_page_alignment = 0;
+ req->r_data.pages = pages;
+ req->r_data.num_pages = nr_pages;
+ req->r_data.alignment = 0;
req->r_callback = finish_read;
req->r_inode = inode;
@@ -374,7 +374,8 @@ static int ceph_readpages(struct file *file, struct address_space *mapping,
max = (fsc->mount_options->rsize + PAGE_CACHE_SIZE - 1)
>> PAGE_SHIFT;
- dout("readpages %p file %p nr_pages %d max %d\n", inode, file, nr_pages,
+ dout("readpages %p file %p nr_pages %d max %d\n", inode,
+ file, nr_pages,
max);
while (!list_empty(page_list)) {
rc = start_read(inode, page_list, max);
@@ -567,7 +568,7 @@ static void writepages_finish(struct ceph_osd_request *req,
* raced with a truncation and was adjusted at the osd,
* so don't believe the reply.
*/
- wrote = req->r_num_pages;
+ wrote = req->r_data.num_pages;
} else {
wrote = 0;
mapping_set_error(mapping, rc);
@@ -576,8 +577,8 @@ static void writepages_finish(struct ceph_osd_request *req,
inode, rc, bytes, wrote);
/* clean all pages */
- for (i = 0; i < req->r_num_pages; i++) {
- page = req->r_pages[i];
+ for (i = 0; i < req->r_data.num_pages; i++) {
+ page = req->r_data.pages[i];
BUG_ON(!page);
WARN_ON(!PageUptodate(page));
@@ -606,31 +607,31 @@ static void writepages_finish(struct ceph_osd_request *req,
unlock_page(page);
}
dout("%p wrote+cleaned %d pages\n", inode, wrote);
- ceph_put_wrbuffer_cap_refs(ci, req->r_num_pages, snapc);
+ ceph_put_wrbuffer_cap_refs(ci, req->r_data.num_pages, snapc);
- ceph_release_pages(req->r_pages, req->r_num_pages);
- if (req->r_pages_from_pool)
- mempool_free(req->r_pages,
+ ceph_release_pages(req->r_data.pages, req->r_data.num_pages);
+ if (req->r_data.pages_from_pool)
+ mempool_free(req->r_data.pages,
ceph_sb_to_client(inode->i_sb)->wb_pagevec_pool);
else
- kfree(req->r_pages);
+ kfree(req->r_data.pages);
ceph_osdc_put_request(req);
}
/*
* allocate a page vec, either directly, or if necessary, via a the
- * mempool. we avoid the mempool if we can because req->r_num_pages
+ * mempool. we avoid the mempool if we can because req->r_data.num_pages
* may be less than the maximum write size.
*/
static void alloc_page_vec(struct ceph_fs_client *fsc,
struct ceph_osd_request *req)
{
- req->r_pages = kmalloc(sizeof(struct page *) * req->r_num_pages,
+ req->r_data.pages = kmalloc(sizeof(struct page *) * req->r_data.num_pages,
GFP_NOFS);
- if (!req->r_pages) {
- req->r_pages = mempool_alloc(fsc->wb_pagevec_pool, GFP_NOFS);
- req->r_pages_from_pool = 1;
- WARN_ON(!req->r_pages);
+ if (!req->r_data.pages) {
+ req->r_data.pages = mempool_alloc(fsc->wb_pagevec_pool, GFP_NOFS);
+ req->r_data.pages_from_pool = 1;
+ WARN_ON(!req->r_data.pages);
}
}
@@ -829,9 +830,9 @@ get_more_pages:
break;
}
- req->r_num_pages = calc_pages_for(0, len);
- req->r_page_alignment = 0;
- max_pages = req->r_num_pages;
+ req->r_data.num_pages = calc_pages_for(0, len);
+ req->r_data.alignment = 0;
+ max_pages = req->r_data.num_pages;
alloc_page_vec(fsc, req);
req->r_callback = writepages_finish;
@@ -853,7 +854,7 @@ get_more_pages:
}
set_page_writeback(page);
- req->r_pages[locked_pages] = page;
+ req->r_data.pages[locked_pages] = page;
locked_pages++;
next = page->index + 1;
}
@@ -883,14 +884,14 @@ get_more_pages:
}
/* submit the write */
- offset = req->r_pages[0]->index << PAGE_CACHE_SHIFT;
+ offset = req->r_data.pages[0]->index << PAGE_CACHE_SHIFT;
len = min((snap_size ? snap_size : i_size_read(inode)) - offset,
(u64)locked_pages << PAGE_CACHE_SHIFT);
dout("writepages got %d pages at %llu~%llu\n",
locked_pages, offset, len);
/* revise final length, page count */
- req->r_num_pages = locked_pages;
+ req->r_data.num_pages = locked_pages;
req->r_request_ops[0].extent.length = cpu_to_le64(len);
req->r_request_ops[0].payload_len = cpu_to_le32(len);
req->r_request->hdr.data_len = cpu_to_le32(len);