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Commit 43bfe5de authored by Alex Elder's avatar Alex Elder Committed by Sage Weil
Browse files

libceph: define osd data initialization helpers 



Define and use functions that encapsulate the initializion of a
ceph_osd_data structure.

Signed-off-by: default avatarAlex Elder <elder@inktank.com>
Reviewed-by: default avatarJosh Durgin <josh.durgin@inktank.com>
parent 9fc6e064

drivers/block/rbd.c

+5 −9
Original line number Diff line number Diff line
@@ -1350,17 +1350,13 @@ static struct ceph_osd_request *rbd_osd_req_create( 
		break;		/* Nothing to do */

	case OBJ_REQUEST_BIO:

		rbd_assert(obj_request->bio_list != NULL);

		osd_data->type = CEPH_OSD_DATA_TYPE_BIO;

		osd_data->bio = obj_request->bio_list;

		osd_data->bio_length = obj_request->length;

		ceph_osd_data_bio_init(osd_data, obj_request->bio_list,

					obj_request->length);

		break;

	case OBJ_REQUEST_PAGES:

		osd_data->type = CEPH_OSD_DATA_TYPE_PAGES;

		osd_data->pages = obj_request->pages;

		osd_data->length = obj_request->length;

		osd_data->alignment = offset & ~PAGE_MASK;

		osd_data->pages_from_pool = false;

		osd_data->own_pages = false;

		ceph_osd_data_pages_init(osd_data, obj_request->pages,

				obj_request->length, offset & ~PAGE_MASK,

				false, false);

		break;

	}

fs/ceph/addr.c

+4 −9
Original line number Diff line number Diff line
@@ -342,10 +342,8 @@ static int start_read(struct inode *inode, struct list_head *page_list, int max) 
		}

		pages[i] = page;

	}

	req->r_data_in.type = CEPH_OSD_DATA_TYPE_PAGES;

	req->r_data_in.pages = pages;

	req->r_data_in.length = len;

	req->r_data_in.alignment = 0;

	ceph_osd_data_pages_init(&req->r_data_in, pages, len, 0,

					false, false);

	req->r_callback = finish_read;

	req->r_inode = inode;
@@ -917,11 +915,8 @@ static int ceph_writepages_start(struct address_space *mapping, 
		dout("writepages got %d pages at %llu~%llu\n",

		     locked_pages, offset, len);



		req->r_data_out.type = CEPH_OSD_DATA_TYPE_PAGES;

		req->r_data_out.pages = pages;

		req->r_data_out.length = len;

		req->r_data_out.alignment = 0;

		req->r_data_out.pages_from_pool = !!pool;

		ceph_osd_data_pages_init(&req->r_data_out, pages, len, 0,

						!!pool, false);



		pages = NULL;	/* request message now owns the pages array */

		pool = NULL;

fs/ceph/file.c

+4 −6
Original line number Diff line number Diff line
@@ -491,6 +491,7 @@ static ssize_t ceph_sync_write(struct file *file, const char __user *data, 
	unsigned long buf_align;

	int ret;

	struct timespec mtime = CURRENT_TIME;

	bool own_pages = false;



	if (ceph_snap(file_inode(file)) != CEPH_NOSNAP)

		return -EROFS;
@@ -571,14 +572,11 @@ static ssize_t ceph_sync_write(struct file *file, const char __user *data, 
		if ((file->f_flags & O_SYNC) == 0) {

			/* get a second commit callback */

			req->r_safe_callback = sync_write_commit;

			req->r_data_out.own_pages = 1;

			own_pages = true;

		}

	}

	req->r_data_out.type = CEPH_OSD_DATA_TYPE_PAGES;

	req->r_data_out.pages = pages;

	req->r_data_out.length = len;

	req->r_data_out.alignment = page_align;

	req->r_inode = inode;

	ceph_osd_data_pages_init(&req->r_data_out, pages, len, page_align,

					false, own_pages);



	/* BUG_ON(vino.snap != CEPH_NOSNAP); */

	ceph_osdc_build_request(req, pos, num_ops, ops,

include/linux/ceph/osd_client.h

+11 −0
Original line number Diff line number Diff line
@@ -280,6 +280,17 @@ static inline void ceph_osdc_put_request(struct ceph_osd_request *req) 
	kref_put(&req->r_kref, ceph_osdc_release_request);

}



extern void ceph_osd_data_pages_init(struct ceph_osd_data *osd_data,

				     struct page **pages, u64 length,

				     u32 alignment, bool pages_from_pool,

				     bool own_pages);

extern void ceph_osd_data_pagelist_init(struct ceph_osd_data *osd_data,

					struct ceph_pagelist *pagelist);

#ifdef CONFIG_BLOCK

extern void ceph_osd_data_bio_init(struct ceph_osd_data *osd_data,

				   struct bio *bio, size_t bio_length);

#endif /* CONFIG_BLOCK */



extern int ceph_osdc_start_request(struct ceph_osd_client *osdc,

				   struct ceph_osd_request *req,

				   bool nofail);

net/ceph/osd_client.c

+39 −16
Original line number Diff line number Diff line
@@ -79,6 +79,38 @@ static int calc_layout(struct ceph_file_layout *layout, u64 off, u64 *plen, 
	return 0;

}



void ceph_osd_data_pages_init(struct ceph_osd_data *osd_data,

			struct page **pages, u64 length, u32 alignment,

			bool pages_from_pool, bool own_pages)

{

	osd_data->type = CEPH_OSD_DATA_TYPE_PAGES;

	osd_data->pages = pages;

	osd_data->length = length;

	osd_data->alignment = alignment;

	osd_data->pages_from_pool = pages_from_pool;

	osd_data->own_pages = own_pages;

}

EXPORT_SYMBOL(ceph_osd_data_pages_init);



void ceph_osd_data_pagelist_init(struct ceph_osd_data *osd_data,

			struct ceph_pagelist *pagelist)

{

	osd_data->type = CEPH_OSD_DATA_TYPE_PAGELIST;

	osd_data->pagelist = pagelist;

}

EXPORT_SYMBOL(ceph_osd_data_pagelist_init);



#ifdef CONFIG_BLOCK

void ceph_osd_data_bio_init(struct ceph_osd_data *osd_data,

			struct bio *bio, size_t bio_length)

{

	osd_data->type = CEPH_OSD_DATA_TYPE_BIO;

	osd_data->bio = bio;

	osd_data->bio_length = bio_length;

}

EXPORT_SYMBOL(ceph_osd_data_bio_init);

#endif /* CONFIG_BLOCK */



/*

 * requests

 */
@@ -400,8 +432,7 @@ static u64 osd_req_encode_op(struct ceph_osd_request *req, 
		ceph_pagelist_append(pagelist, src->cls.indata,

				     src->cls.indata_len);



		req->r_data_out.type = CEPH_OSD_DATA_TYPE_PAGELIST;

		req->r_data_out.pagelist = pagelist;

		ceph_osd_data_pagelist_init(&req->r_data_out, pagelist);

		out_data_len = pagelist->length;

		break;

	case CEPH_OSD_OP_STARTSYNC:
@@ -2056,7 +2087,6 @@ int ceph_osdc_readpages(struct ceph_osd_client *osdc, 
			struct page **pages, int num_pages, int page_align)

{

	struct ceph_osd_request *req;

	struct ceph_osd_data *osd_data;

	struct ceph_osd_req_op op;

	int rc = 0;
@@ -2071,14 +2101,11 @@ int ceph_osdc_readpages(struct ceph_osd_client *osdc, 


	/* it may be a short read due to an object boundary */



	osd_data = &req->r_data_in;

	osd_data->type = CEPH_OSD_DATA_TYPE_PAGES;

	osd_data->pages = pages;

	osd_data->length = *plen;

	osd_data->alignment = page_align;

	ceph_osd_data_pages_init(&req->r_data_in, pages, *plen, page_align,

				false, false);



	dout("readpages  final extent is %llu~%llu (%llu bytes align %d)\n",

	     off, *plen, osd_data->length, page_align);

	     off, *plen, *plen, page_align);



	ceph_osdc_build_request(req, off, 1, &op, NULL, vino.snap, NULL);
@@ -2104,7 +2131,6 @@ int ceph_osdc_writepages(struct ceph_osd_client *osdc, struct ceph_vino vino, 
			 struct page **pages, int num_pages)

{

	struct ceph_osd_request *req;

	struct ceph_osd_data *osd_data;

	struct ceph_osd_req_op op;

	int rc = 0;

	int page_align = off & ~PAGE_MASK;
@@ -2119,12 +2145,9 @@ int ceph_osdc_writepages(struct ceph_osd_client *osdc, struct ceph_vino vino, 
		return PTR_ERR(req);



	/* it may be a short write due to an object boundary */

	osd_data = &req->r_data_out;

	osd_data->type = CEPH_OSD_DATA_TYPE_PAGES;

	osd_data->pages = pages;

	osd_data->length = len;

	osd_data->alignment = page_align;

	dout("writepages %llu~%llu (%llu bytes)\n", off, len, osd_data->length);

	ceph_osd_data_pages_init(&req->r_data_out, pages, len, page_align,

				false, false);

	dout("writepages %llu~%llu (%llu bytes)\n", off, len, len);



	ceph_osdc_build_request(req, off, 1, &op, snapc, CEPH_NOSNAP, mtime);