Displaying 18 results from an estimated 18 matches for "pending_reqs".
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pending_req
2012 Aug 16
0
[RFC v1 3/5] VBD: enlarge max segment per request in blkfront
...atic int dispatch_rw_block_io(struct xen_blkif *blkif,
- struct blkif_request *req,
struct pending_req *pending_req);
static void make_response(struct xen_blkif *blkif, u64 id,
- unsigned short op, int st);
-
-/*
- * Retrieve from the ''pending_reqs'' a free pending_req structure to be used.
- */
-static struct pending_req *alloc_req(void)
-{
- struct pending_req *req = NULL;
- unsigned long flags;
-
- spin_lock_irqsave(&blkbk->pending_free_lock, flags);
- if (!list_empty(&blkbk->pending_free)) {
- re...
2008 May 30
5
[PATCH 1/4] pvSCSI driver
pvSCSI backend driver
Signed-off-by: Tomonari Horikoshi <t.horikoshi@jp.fujitsu.com>
Signed-off-by: Jun Kamada <kama@jp.fujitsu.com>
-----
Jun Kamada
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2013 Feb 28
1
[PATCH RFC 09/12] xen-blkback: move pending handles list from blkbk to pending_req
...blkif *blkif, u64 id,
static int __init xen_blkif_init(void)
{
- int i, mmap_pages;
+ int i;
int rc = 0;
if (!xen_domain())
@@ -1226,21 +1225,15 @@ static int __init xen_blkif_init(void)
return -ENOMEM;
}
- mmap_pages = xen_blkif_reqs * BLKIF_MAX_SEGMENTS_PER_REQUEST;
blkbk->pending_reqs = kzalloc(sizeof(blkbk->pending_reqs[0]) *
xen_blkif_reqs, GFP_KERNEL);
- blkbk->pending_grant_handles = kmalloc(sizeof(blkbk->pending_grant_handles[0]) *
- mmap_pages, GFP_KERNEL);
- if (!blkbk->pending_reqs || !blkbk->pending_grant_handles) {
+ if (!blkbk->p...
2012 Sep 19
27
[PATCH] Persistent grant maps for xen blk drivers
...nt;
+}
+
+static struct pers_gnt *get_pers_gnt(struct xen_blkif *blkif,
+ grant_ref_t gref)
+{
+ int i;
+
+ for (i = 0; i < blkif->pers_gnt_c; i++)
+ if (gref == blkif->pers_gnts[i]->gnt)
+ return blkif->pers_gnts[i];
+ return NULL;
+}
+
/*
* Retrieve from the ''pending_reqs'' a free pending_req structure to be used.
*/
@@ -274,6 +293,12 @@ int xen_blkif_schedule(void *arg)
{
struct xen_blkif *blkif = arg;
struct xen_vbd *vbd = &blkif->vbd;
+ struct gnttab_unmap_grant_ref unmap[BLKIF_MAX_SEGMENTS_PER_REQUEST];
+ struct page *pages[BLKIF_MAX_SEGMEN...
2011 Jun 21
13
VM disk I/O limit patch
Hi all,
I add a blkback QoS patch.
You can config(dynamic/static) different I/O speed for different VM disk
by this patch.
----------------------------------------------------------------------------
diff -urNp blkback/blkback.c blkback-qos/blkback.c
--- blkback/blkback.c 2011-06-22 07:54:19.000000000 +0800
+++ blkback-qos/blkback.c 2011-06-22 07:53:18.000000000 +0800
@@ -44,6 +44,11 @@
2011 Jun 21
13
VM disk I/O limit patch
Hi all,
I add a blkback QoS patch.
You can config(dynamic/static) different I/O speed for different VM disk
by this patch.
----------------------------------------------------------------------------
diff -urNp blkback/blkback.c blkback-qos/blkback.c
--- blkback/blkback.c 2011-06-22 07:54:19.000000000 +0800
+++ blkback-qos/blkback.c 2011-06-22 07:53:18.000000000 +0800
@@ -44,6 +44,11 @@
2008 Nov 05
0
[PATCH] blktap: ensure vma->vm_mm''s mmap_sem is being held whenever it is being modified
As usual, written and (build-)tested on 2.6.27.4 and made apply to the 2.6.18
tree without further testing.
Signed-off-by: Jan Beulich <jbeulich@novell.com>
Index: head-2008-11-04/drivers/xen/blktap/blktap.c
===================================================================
--- head-2008-11-04.orig/drivers/xen/blktap/blktap.c 2008-10-01 16:35:04.000000000 +0200
+++
2012 Nov 02
2
[PATCH] xen-blk: persistent-grants fixes
This patch contains fixes for persistent grants implementation v2:
* handle == 0 is a valid handle, so initialize grants in blkback
setting the handle to BLKBACK_INVALID_HANDLE instead of 0. Reported
by Konrad Rzeszutek Wilk.
* new_map is a boolean, use "true" or "false" instead of 1 and 0.
Reported by Konrad Rzeszutek Wilk.
* blkfront announces the
2013 Apr 19
14
[GIT PULL] (xen) stable/for-jens-3.10
Hey Jens,
Please in your spare time (if there is such a thing at a conference)
pull this branch:
git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen.git stable/for-jens-3.10
for your v3.10 branch. Sorry for being so late with this.
<blurb>
It has the ''feature-max-indirect-segments'' implemented in both backend
and frontend. The current problem with the backend and
2010 Sep 15
15
xenpaging fixes for kernel and hypervisor
Patrick,
there following patches fix xenpaging for me.
Granttable handling is incomplete. If a page is gone, a GNTST_eagain
should be returned to the caller to inidcate the hypercall has to be
retried after a while, until the page is available again.
Please review.
Olaf
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2007 Jul 30
0
[PATCH][1/4][IOMGR] I/O request Manager body
This patch provides a I/O request management framework.
This framework can control virtual block device threads at 7 places :
* deciding that virtual block devices(threads) is ether going or waiting,
* before allocating pending_request variables,
* after allocated pending_request variables,
* after allocated no pending_request variables (Namely, out of request),
* after freed
2012 Aug 16
0
[RFC v1 5/5] VBD: enlarge max segment per request in blkfront
add segring support in blkback
Signed-off-by: Ronghui Duan <ronghui.duan@intel.com>
diff --git a/drivers/block/xen-blkback/blkback.c b/drivers/block/xen-blkback/blkback.c
index 45eda98..0bbc226 100644
--- a/drivers/block/xen-blkback/blkback.c
+++ b/drivers/block/xen-blkback/blkback.c
@@ -60,6 +60,10 @@ static int xen_blkif_reqs = 64;
module_param_named(reqs, xen_blkif_reqs, int, 0);
2011 Sep 01
9
[PATCH V4 0/3] xen-blkfront/blkback discard support
Dear list,
This is the V4 of the trim support for xen-blkfront/blkback,
Now we move BLKIF_OP_TRIM to BLKIF_OP_DISCARD, and dropped all
"trim" stuffs in the patches, and use "discard" instead.
Also we updated the helpers of blkif_x86_{32|64}_request or we
will meet problems using a non-native protocol.
And this patch has been tested with both SSD and raw file,
with SSD we will
2012 Apr 10
7
[PATCH v3 1/2] xen: enter/exit lazy_mmu_mode around m2p_override calls
This patch is a significant performance improvement for the
m2p_override: about 6% using the gntdev device.
Each m2p_add/remove_override call issues a MULTI_grant_table_op and a
__flush_tlb_single if kmap_op != NULL. Batching all the calls together
is a great performance benefit because it means issuing one hypercall
total rather than two hypercall per page.
If paravirt_lazy_mode is set
2011 Dec 01
11
[PATCH 0 of 2] Paging support updates for XCP dom0
This is a cherry pick of two patches that add support for guest paged out
frames in the XCP 2.6.32 dom0 patch queue.
First patch propagates the ENOENT returned by the hypervisor in the case
of a paged out page, all the way up the call chain to the MMAPBATCH_V2
ioctl. The ioctl is mainly used to harvest those return values and retry.
The second patch adds retry loops to all backend grant
2011 May 02
32
[PATCH] blkback: Fix block I/O latency issue
In blkback driver, after I/O requests are submitted to Dom-0 block I/O subsystem, blkback goes to ''sleep'' effectively without letting blkfront know about it (req_event isn''t set appropriately). Hence blkfront doesn''t notify blkback when it submits a new I/O thus delaying the ''dispatch'' of the new I/O to Dom-0 block I/O subsystem. The new I/O is
2019 Jul 24
20
[PATCH 00/12] block/bio, fs: convert put_page() to put_user_page*()
From: John Hubbard <jhubbard at nvidia.com>
Hi,
This is mostly Jerome's work, converting the block/bio and related areas
to call put_user_page*() instead of put_page(). Because I've changed
Jerome's patches, in some cases significantly, I'd like to get his
feedback before we actually leave him listed as the author (he might
want to disown some or all of these).
I added a
2019 Jul 24
20
[PATCH 00/12] block/bio, fs: convert put_page() to put_user_page*()
From: John Hubbard <jhubbard at nvidia.com>
Hi,
This is mostly Jerome's work, converting the block/bio and related areas
to call put_user_page*() instead of put_page(). Because I've changed
Jerome's patches, in some cases significantly, I'd like to get his
feedback before we actually leave him listed as the author (he might
want to disown some or all of these).
I added a