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| author | Tomi Valkeinen <tomi.valkeinen@ti.com> | 2014-03-20 08:09:19 +0200 |
|---|---|---|
| committer | Tomi Valkeinen <tomi.valkeinen@ti.com> | 2014-03-20 08:13:50 +0200 |
| commit | 17d5ca91cfc59ae91da5ff9da74ab09a9a2a17d9 (patch) | |
| tree | a45f944e15a2600ec20ca4ec11b23d4641095e8e /drivers/block/xen-blkback/xenbus.c | |
| parent | b7e4ab50418d5b34ab0dae95193dd71190e1fb50 (diff) | |
| parent | c86907b59f505863ec7839471e889330982a596e (diff) | |
| download | linux-stable-17d5ca91cfc59ae91da5ff9da74ab09a9a2a17d9.tar.gz linux-stable-17d5ca91cfc59ae91da5ff9da74ab09a9a2a17d9.tar.bz2 linux-stable-17d5ca91cfc59ae91da5ff9da74ab09a9a2a17d9.zip | |
Merge branch '3.15/dss-dt' into 3.15/fbdev
Merge OMAP DSS DT support
Diffstat (limited to 'drivers/block/xen-blkback/xenbus.c')
| -rw-r--r-- | drivers/block/xen-blkback/xenbus.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/drivers/block/xen-blkback/xenbus.c b/drivers/block/xen-blkback/xenbus.c index c2014a0aa206..9a547e6b6ebf 100644 --- a/drivers/block/xen-blkback/xenbus.c +++ b/drivers/block/xen-blkback/xenbus.c @@ -125,8 +125,11 @@ static struct xen_blkif *xen_blkif_alloc(domid_t domid) blkif->persistent_gnts.rb_node = NULL; spin_lock_init(&blkif->free_pages_lock); INIT_LIST_HEAD(&blkif->free_pages); + INIT_LIST_HEAD(&blkif->persistent_purge_list); blkif->free_pages_num = 0; atomic_set(&blkif->persistent_gnt_in_use, 0); + atomic_set(&blkif->inflight, 0); + INIT_WORK(&blkif->persistent_purge_work, xen_blkbk_unmap_purged_grants); INIT_LIST_HEAD(&blkif->pending_free); @@ -259,6 +262,17 @@ static void xen_blkif_free(struct xen_blkif *blkif) if (!atomic_dec_and_test(&blkif->refcnt)) BUG(); + /* Remove all persistent grants and the cache of ballooned pages. */ + xen_blkbk_free_caches(blkif); + + /* Make sure everything is drained before shutting down */ + BUG_ON(blkif->persistent_gnt_c != 0); + BUG_ON(atomic_read(&blkif->persistent_gnt_in_use) != 0); + BUG_ON(blkif->free_pages_num != 0); + BUG_ON(!list_empty(&blkif->persistent_purge_list)); + BUG_ON(!list_empty(&blkif->free_pages)); + BUG_ON(!RB_EMPTY_ROOT(&blkif->persistent_gnts)); + /* Check that there is no request in use */ list_for_each_entry_safe(req, n, &blkif->pending_free, free_list) { list_del(&req->free_list); |