diff options
| author | Alex Elder <elder@inktank.com> | 2013-02-14 12:16:43 -0600 |
|---|---|---|
| committer | Sage Weil <sage@inktank.com> | 2013-05-01 21:16:25 -0700 |
| commit | 2ac2b7a6d4976bd6b5dc0751aa77d12d48d3ac4c (patch) | |
| tree | af95ff579ab1719871e8678ef530db46514c0eb7 /fs/ceph | |
| parent | 2794a82a11cfeae0890741b18b0049ddb55ce646 (diff) | |
| download | linux-2ac2b7a6d4976bd6b5dc0751aa77d12d48d3ac4c.tar.bz2 | |
libceph: distinguish page and bio requests
An osd request uses either pages or a bio list for its data. Use a
union to record information about the two, and add a data type
tag to select between them.
Signed-off-by: Alex Elder <elder@inktank.com>
Reviewed-by: Josh Durgin <josh.durgin@inktank.com>
Diffstat (limited to 'fs/ceph')
| -rw-r--r-- | fs/ceph/addr.c | 4 | ||||
| -rw-r--r-- | fs/ceph/file.c | 1 |
2 files changed, 5 insertions, 0 deletions
diff --git a/fs/ceph/addr.c b/fs/ceph/addr.c index 3a1a77b0ae9f..276fe96f12e3 100644 --- a/fs/ceph/addr.c +++ b/fs/ceph/addr.c @@ -243,6 +243,7 @@ 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 */ + BUG_ON(req->r_data.type != CEPH_OSD_DATA_TYPE_PAGES); for (i = 0; i < req->r_data.num_pages; i++, bytes -= PAGE_CACHE_SIZE) { struct page *page = req->r_data.pages[i]; @@ -336,6 +337,7 @@ static int start_read(struct inode *inode, struct list_head *page_list, int max) } pages[i] = page; } + req->r_data.type = CEPH_OSD_DATA_TYPE_PAGES; req->r_data.pages = pages; req->r_data.num_pages = nr_pages; req->r_data.alignment = 0; @@ -561,6 +563,7 @@ static void writepages_finish(struct ceph_osd_request *req, long writeback_stat; unsigned issued = ceph_caps_issued(ci); + BUG_ON(req->r_data.type != CEPH_OSD_DATA_TYPE_PAGES); if (rc >= 0) { /* * Assume we wrote the pages we originally sent. The @@ -830,6 +833,7 @@ get_more_pages: break; } + req->r_data.type = CEPH_OSD_DATA_TYPE_PAGES; req->r_data.num_pages = calc_pages_for(0, len); req->r_data.alignment = 0; max_pages = req->r_data.num_pages; diff --git a/fs/ceph/file.c b/fs/ceph/file.c index d35fc05af06f..3643a386ab23 100644 --- a/fs/ceph/file.c +++ b/fs/ceph/file.c @@ -571,6 +571,7 @@ more: req->r_data.own_pages = 1; } } + req->r_data.type = CEPH_OSD_DATA_TYPE_PAGES; req->r_data.pages = pages; req->r_data.num_pages = num_pages; req->r_data.alignment = page_align; |