From a4ce40a9a7c1053ac2a41cf64255e44e356e5522 Mon Sep 17 00:00:00 2001 From: Alex Elder Date: Fri, 5 Apr 2013 01:27:12 -0500 Subject: libceph: combine initializing and setting osd data This ends up being a rather large patch but what it's doing is somewhat straightforward. Basically, this is replacing two calls with one. The first of the two calls is initializing a struct ceph_osd_data with data (either a page array, a page list, or a bio list); the second is setting an osd request op so it associates that data with one of the op's parameters. In place of those two will be a single function that initializes the op directly. That means we sort of fan out a set of the needed functions: - extent ops with pages data - extent ops with pagelist data - extent ops with bio list data and - class ops with page data for receiving a response We also have define another one, but it's only used internally: - class ops with pagelist data for request parameters Note that we *still* haven't gotten rid of the osd request's r_data_in and r_data_out fields. All the osd ops refer to them for their data. For now, these data fields are pointers assigned to the appropriate r_data_* field when these new functions are called. Signed-off-by: Alex Elder Reviewed-by: Josh Durgin --- fs/ceph/addr.c | 12 +++++------- 1 file changed, 5 insertions(+), 7 deletions(-) (limited to 'fs/ceph/addr.c') diff --git a/fs/ceph/addr.c b/fs/ceph/addr.c index cc57104a7266..27d62070a8e9 100644 --- a/fs/ceph/addr.c +++ b/fs/ceph/addr.c @@ -245,7 +245,7 @@ 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 */ - osd_data = &req->r_data_in; + osd_data = osd_req_op_extent_osd_data(req, 0, false); BUG_ON(osd_data->type != CEPH_OSD_DATA_TYPE_PAGES); num_pages = calc_pages_for((u64)osd_data->alignment, (u64)osd_data->length); @@ -343,8 +343,7 @@ static int start_read(struct inode *inode, struct list_head *page_list, int max) } pages[i] = page; } - BUG_ON(req->r_ops[0].extent.osd_data != &req->r_data_in); - ceph_osd_data_pages_init(req->r_ops[0].extent.osd_data, pages, len, 0, + osd_req_op_extent_osd_data_pages(req, 0, false, pages, len, 0, false, false); req->r_callback = finish_read; req->r_inode = inode; @@ -572,7 +571,7 @@ static void writepages_finish(struct ceph_osd_request *req, long writeback_stat; unsigned issued = ceph_caps_issued(ci); - osd_data = &req->r_data_out; + osd_data = osd_req_op_extent_osd_data(req, 0, true); BUG_ON(osd_data->type != CEPH_OSD_DATA_TYPE_PAGES); num_pages = calc_pages_for((u64)osd_data->alignment, (u64)osd_data->length); @@ -917,9 +916,8 @@ get_more_pages: dout("writepages got %d pages at %llu~%llu\n", locked_pages, offset, len); - BUG_ON(req->r_ops[0].extent.osd_data != &req->r_data_out); - ceph_osd_data_pages_init(req->r_ops[0].extent.osd_data, pages, - len, 0, !!pool, false); + osd_req_op_extent_osd_data_pages(req, 0, true, pages, len, 0, + !!pool, false); pages = NULL; /* request message now owns the pages array */ pool = NULL; -- cgit v1.2.3