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Merge branch 'stable/for-jens-3.18' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen into for-3.18/drivers

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Konrad writes:

This pull has two fixes and one cleanup. Nothing earthshattering.
This commit is contained in:
Jens Axboe 2014-10-01 14:37:25 -06:00
commit 7b7b7f7e02
3 changed files with 13 additions and 6 deletions
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1
drivers/block/xen-blkback/blkback.c
View File

@ -763,6 +763,7 @@ again:
BUG_ON(new_map_idx >= segs_to_map);
if (unlikely(map[new_map_idx].status != 0)) {
pr_debug(DRV_PFX "invalid buffer -- could not remap it\n");
put_free_pages(blkif, &pages[seg_idx]->page, 1);
pages[seg_idx]->handle = BLKBACK_INVALID_HANDLE;
ret |= 1;
goto next;

6
drivers/block/xen-blkback/xenbus.c
View File

@ -270,6 +270,9 @@ static int xen_blkif_disconnect(struct xen_blkif *blkif)
blkif->blk_rings.common.sring = NULL;
}
/* Remove all persistent grants and the cache of ballooned pages. */
xen_blkbk_free_caches(blkif);
return 0;
}
@ -281,9 +284,6 @@ static void xen_blkif_free(struct xen_blkif *blkif)
xen_blkif_disconnect(blkif);
xen_vbd_free(&blkif->vbd);
/* 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);

12
drivers/block/xen-blkfront.c
View File

@ -582,6 +582,14 @@ static inline void flush_requests(struct blkfront_info *info)
notify_remote_via_irq(info->irq);
}
static inline bool blkif_request_flush_valid(struct request *req,
struct blkfront_info *info)
{
return ((req->cmd_type != REQ_TYPE_FS) ||
((req->cmd_flags & (REQ_FLUSH | REQ_FUA)) &&
!info->flush_op));
}
/*
* do_blkif_request
* read a block; request is in a request queue
@ -604,9 +612,7 @@ static void do_blkif_request(struct request_queue *rq)
blk_start_request(req);
if ((req->cmd_type != REQ_TYPE_FS) ||
((req->cmd_flags & (REQ_FLUSH | REQ_FUA)) &&
!info->flush_op)) {
if (blkif_request_flush_valid(req, info)) {
__blk_end_request_all(req, -EIO);
continue;
}