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| author | Dongli Zhang <dongli.zhang@oracle.com> | 2017-06-28 15:57:28 +0300 |
|---|---|---|
| committer | Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> | 2017-07-25 18:31:09 +0300 |
| commit | bd912ef3e46b6edb51bb8af4b73fd2be7817e305 (patch) | |
| tree | 61b5281d5730da8d913a400b63182e64375bdc02 /drivers/xen | |
| parent | 4b422cb99836de3d261faec20a0329385bdec43d (diff) | |
| download | linux-bd912ef3e46b6edb51bb8af4b73fd2be7817e305.tar.xz | |
xen/blkfront: always allocate grants first from per-queue persistent grants
This patch partially reverts 3df0e50 ("xen/blkfront: pseudo support for
multi hardware queues/rings"). The xen-blkfront queue/ring might hang due
to grants allocation failure in the situation when gnttab_free_head is
almost empty while many persistent grants are reserved for this queue/ring.
As persistent grants management was per-queue since 73716df ("xen/blkfront:
make persistent grants pool per-queue"), we should always allocate from
persistent grants first.
Acked-by: Roger Pau Monné <roger.pau@citrix.com>
Signed-off-by: Dongli Zhang <dongli.zhang@oracle.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Diffstat (limited to 'drivers/xen')
0 files changed, 0 insertions, 0 deletions