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| author | Alex Elder <elder@inktank.com> | 2013-01-25 17:08:55 -0600 |
|---|---|---|
| committer | Sage Weil <sage@inktank.com> | 2013-02-13 18:29:10 -0800 |
| commit | 25dcf954c3230946b5f3e18db9f91d7640eff76e (patch) | |
| tree | cc7e5d7f69c3ab1dd49deea447fb697675bff5a3 /drivers/block | |
| parent | 975241afcbba82ab1ddc6ebf8a02246d1e9314fd (diff) | |
| download | linux-25dcf954c3230946b5f3e18db9f91d7640eff76e.tar.gz linux-25dcf954c3230946b5f3e18db9f91d7640eff76e.tar.bz2 linux-25dcf954c3230946b5f3e18db9f91d7640eff76e.zip | |
rbd: decrement obj request count when deleting
Decrement the obj_request_count value when deleting an object
request from its image request's list. Rearrange a few lines
in the surrounding code.
This resolves:
http://tracker.ceph.com/issues/3940
Signed-off-by: Alex Elder <elder@inktank.com>
Reviewed-by: Josh Durgin <josh.durgin@inktank.com>
Diffstat (limited to 'drivers/block')
| -rw-r--r-- | drivers/block/rbd.c | 16 |
1 files changed, 12 insertions, 4 deletions
diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c index fc1a045cee4d..d3d15d06abc0 100644 --- a/drivers/block/rbd.c +++ b/drivers/block/rbd.c @@ -1063,22 +1063,29 @@ static void rbd_img_request_put(struct rbd_img_request *img_request) static inline void rbd_img_obj_request_add(struct rbd_img_request *img_request, struct rbd_obj_request *obj_request) { + rbd_assert(obj_request->img_request == NULL); + rbd_obj_request_get(obj_request); obj_request->img_request = img_request; - list_add_tail(&obj_request->links, &img_request->obj_requests); - obj_request->which = img_request->obj_request_count++; + obj_request->which = img_request->obj_request_count; rbd_assert(obj_request->which != BAD_WHICH); + img_request->obj_request_count++; + list_add_tail(&obj_request->links, &img_request->obj_requests); } static inline void rbd_img_obj_request_del(struct rbd_img_request *img_request, struct rbd_obj_request *obj_request) { rbd_assert(obj_request->which != BAD_WHICH); - obj_request->which = BAD_WHICH; + list_del(&obj_request->links); + rbd_assert(img_request->obj_request_count > 0); + img_request->obj_request_count--; + rbd_assert(obj_request->which == img_request->obj_request_count); + obj_request->which = BAD_WHICH; rbd_assert(obj_request->img_request == img_request); - obj_request->callback = NULL; obj_request->img_request = NULL; + obj_request->callback = NULL; rbd_obj_request_put(obj_request); } @@ -1472,6 +1479,7 @@ static void rbd_img_request_destroy(struct kref *kref) for_each_obj_request_safe(img_request, obj_request, next_obj_request) rbd_img_obj_request_del(img_request, obj_request); + rbd_assert(img_request->obj_request_count == 0); if (img_request->write_request) ceph_put_snap_context(img_request->snapc); |