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authorSage Weil <sage@newdream.net>2011-06-13 16:20:18 -0700
committerSage Weil <sage@newdream.net>2011-06-13 16:26:17 -0700
commit9bb0ce2b0b734f3325ea5cd6b351856eeac94f78 (patch)
treeafd4c5d343ddfabae8c3b78bff342f6ba6037055 /net/ceph
parent773e9b442693b250aa6c452cb0cf5a9343f51cef (diff)
downloadlinux-9bb0ce2b0b734f3325ea5cd6b351856eeac94f78.tar.bz2
libceph: fix page calculation for non-page-aligned io
Set the page count correctly for non-page-aligned IO. We were already doing this correctly for alignment, but not the page count. Fixes DIRECT_IO writes from unaligned pages. Signed-off-by: Sage Weil <sage@newdream.net>
Diffstat (limited to 'net/ceph')
-rw-r--r--net/ceph/osd_client.c10
1 files changed, 6 insertions, 4 deletions
diff --git a/net/ceph/osd_client.c b/net/ceph/osd_client.c
index 9cb627a4073a..7330c2757c0c 100644
--- a/net/ceph/osd_client.c
+++ b/net/ceph/osd_client.c
@@ -477,8 +477,9 @@ struct ceph_osd_request *ceph_osdc_new_request(struct ceph_osd_client *osdc,
calc_layout(osdc, vino, layout, off, plen, req, ops);
req->r_file_layout = *layout; /* keep a copy */
- /* in case it differs from natural alignment that calc_layout
- filled in for us */
+ /* in case it differs from natural (file) alignment that
+ calc_layout filled in for us */
+ req->r_num_pages = calc_pages_for(page_align, *plen);
req->r_page_alignment = page_align;
ceph_osdc_build_request(req, off, plen, ops,
@@ -2027,8 +2028,9 @@ static struct ceph_msg *get_reply(struct ceph_connection *con,
int want = calc_pages_for(req->r_page_alignment, data_len);
if (unlikely(req->r_num_pages < want)) {
- pr_warning("tid %lld reply %d > expected %d pages\n",
- tid, want, m->nr_pages);
+ pr_warning("tid %lld reply has %d bytes %d pages, we"
+ " had only %d pages ready\n", tid, data_len,
+ want, req->r_num_pages);
*skip = 1;
ceph_msg_put(m);
m = NULL;