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Commit 87060c10 authored by Alex Elder's avatar Alex Elder Committed by Sage Weil
Browse files

libceph: a few more osd data cleanups 



These are very small changes that make use osd_data local pointers
as shorthands for structures being operated on.

Signed-off-by: default avatarAlex Elder <elder@inktank.com>
Reviewed-by: default avatarJosh Durgin <josh.durgin@inktank.com>
parent 23c08a9c

fs/ceph/addr.c

+17 −13
Original line number Diff line number Diff line
@@ -236,6 +236,7 @@ static int ceph_readpage(struct file *filp, struct page *page) 
static void finish_read(struct ceph_osd_request *req, struct ceph_msg *msg)

{

	struct inode *inode = req->r_inode;

	struct ceph_osd_data *osd_data;

	int rc = req->r_result;

	int bytes = le32_to_cpu(msg->hdr.data_len);

	int num_pages;
@@ -244,11 +245,12 @@ 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 */

	BUG_ON(req->r_data_in.type != CEPH_OSD_DATA_TYPE_PAGES);

	num_pages = calc_pages_for((u64)req->r_data_in.alignment,

					(u64)req->r_data_in.length);

	osd_data = &req->r_data_in;

	BUG_ON(osd_data->type != CEPH_OSD_DATA_TYPE_PAGES);

	num_pages = calc_pages_for((u64)osd_data->alignment,

					(u64)osd_data->length);

	for (i = 0; i < num_pages; i++) {

		struct page *page = req->r_data_in.pages[i];

		struct page *page = osd_data->pages[i];



		if (bytes < (int)PAGE_CACHE_SIZE) {

			/* zero (remainder of) page */
@@ -263,7 +265,7 @@ static void finish_read(struct ceph_osd_request *req, struct ceph_msg *msg) 
		page_cache_release(page);

		bytes -= PAGE_CACHE_SIZE;

	}

	kfree(req->r_data_in.pages);

	kfree(osd_data->pages);

}



static void ceph_unlock_page_vector(struct page **pages, int num_pages)
@@ -557,6 +559,7 @@ static void writepages_finish(struct ceph_osd_request *req, 
{

	struct inode *inode = req->r_inode;

	struct ceph_inode_info *ci = ceph_inode(inode);

	struct ceph_osd_data *osd_data;

	unsigned wrote;

	struct page *page;

	int num_pages;
@@ -569,9 +572,10 @@ static void writepages_finish(struct ceph_osd_request *req, 
	long writeback_stat;

	unsigned issued = ceph_caps_issued(ci);



	BUG_ON(req->r_data_out.type != CEPH_OSD_DATA_TYPE_PAGES);

	num_pages = calc_pages_for((u64)req->r_data_out.alignment,

					(u64)req->r_data_out.length);

	osd_data = &req->r_data_out;

	BUG_ON(osd_data->type != CEPH_OSD_DATA_TYPE_PAGES);

	num_pages = calc_pages_for((u64)osd_data->alignment,

					(u64)osd_data->length);

	if (rc >= 0) {

		/*

		 * Assume we wrote the pages we originally sent.  The
@@ -589,7 +593,7 @@ static void writepages_finish(struct ceph_osd_request *req, 


	/* clean all pages */

	for (i = 0; i < num_pages; i++) {

		page = req->r_data_out.pages[i];

		page = osd_data->pages[i];

		BUG_ON(!page);

		WARN_ON(!PageUptodate(page));
@@ -620,12 +624,12 @@ static void writepages_finish(struct ceph_osd_request *req, 
	dout("%p wrote+cleaned %d pages\n", inode, wrote);

	ceph_put_wrbuffer_cap_refs(ci, num_pages, snapc);



	ceph_release_pages(req->r_data_out.pages, num_pages);

	if (req->r_data_out.pages_from_pool)

		mempool_free(req->r_data_out.pages,

	ceph_release_pages(osd_data->pages, num_pages);

	if (osd_data->pages_from_pool)

		mempool_free(osd_data->pages,

			     ceph_sb_to_client(inode->i_sb)->wb_pagevec_pool);

	else

		kfree(req->r_data_out.pages);

		kfree(osd_data->pages);

	ceph_osdc_put_request(req);

}