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xen-blkback: init persistent_purge_work work_struct

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Initialize persistent_purge_work work_struct on xen_blkif_alloc (and
remove the previous initialization done in purge_persistent_gnt). This
prevents flush_work from complaining even if purge_persistent_gnt has
not been used.

Signed-off-by: Roger Pau Monné <roger.pau@citrix.com>
Reviewed-by: David Vrabel <david.vrabel@citrix.com>
Tested-by: Sander Eikelenboom <linux@eikelenboom.it>
Signed-off-by: Jens Axboe <axboe@fb.com>
This commit is contained in:
Roger Pau Monne 2014-02-11 20:34:03 -07:00 committed by Jens Axboe
parent 49f5baa510
commit abb97b8c50
3 changed files with 3 additions and 2 deletions
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3
drivers/block/xen-blkback/blkback.c
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@ -299,7 +299,7 @@ static void free_persistent_gnts(struct xen_blkif *blkif, struct rb_root *root,
BUG_ON(num != 0); BUG_ON(num != 0);
} }
static void unmap_purged_grants(struct work_struct *work) void xen_blkbk_unmap_purged_grants(struct work_struct *work)
{ {
struct gnttab_unmap_grant_ref unmap[BLKIF_MAX_SEGMENTS_PER_REQUEST]; struct gnttab_unmap_grant_ref unmap[BLKIF_MAX_SEGMENTS_PER_REQUEST];
struct page *pages[BLKIF_MAX_SEGMENTS_PER_REQUEST]; struct page *pages[BLKIF_MAX_SEGMENTS_PER_REQUEST];
@ -420,7 +420,6 @@ finished:
blkif->vbd.overflow_max_grants = 0; blkif->vbd.overflow_max_grants = 0;
/* We can defer this work */ /* We can defer this work */
INIT_WORK(&blkif->persistent_purge_work, unmap_purged_grants);
schedule_work(&blkif->persistent_purge_work); schedule_work(&blkif->persistent_purge_work);
pr_debug(DRV_PFX "Purged %u/%u\n", (total - num_clean), total); pr_debug(DRV_PFX "Purged %u/%u\n", (total - num_clean), total);
return; return;

1
drivers/block/xen-blkback/common.h
View File

@ -385,6 +385,7 @@ int xen_blkbk_flush_diskcache(struct xenbus_transaction xbt,
int xen_blkbk_barrier(struct xenbus_transaction xbt, int xen_blkbk_barrier(struct xenbus_transaction xbt,
struct backend_info *be, int state); struct backend_info *be, int state);
struct xenbus_device *xen_blkbk_xenbus(struct backend_info *be); struct xenbus_device *xen_blkbk_xenbus(struct backend_info *be);
void xen_blkbk_unmap_purged_grants(struct work_struct *work);
static inline void blkif_get_x86_32_req(struct blkif_request *dst, static inline void blkif_get_x86_32_req(struct blkif_request *dst,
struct blkif_x86_32_request *src) struct blkif_x86_32_request *src)

1
drivers/block/xen-blkback/xenbus.c
View File

@ -129,6 +129,7 @@ static struct xen_blkif *xen_blkif_alloc(domid_t domid)
blkif->free_pages_num = 0; blkif->free_pages_num = 0;
atomic_set(&blkif->persistent_gnt_in_use, 0); atomic_set(&blkif->persistent_gnt_in_use, 0);
atomic_set(&blkif->inflight, 0); atomic_set(&blkif->inflight, 0);
INIT_WORK(&blkif->persistent_purge_work, xen_blkbk_unmap_purged_grants);
INIT_LIST_HEAD(&blkif->pending_free); INIT_LIST_HEAD(&blkif->pending_free);