From: Peter Zijlstra <a.p.zijlstra@chello.nl>
To: linux-mm@kvack.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org
Cc: Daniel Phillips <phillips@google.com>,
Rik van Riel <riel@redhat.com>,
David Miller <davem@davemloft.net>, Andrew Morton <akpm@osdl.org>,
Peter Zijlstra <a.p.zijlstra@chello.nl>,
"James E.J. Bottomley" <James.Bottomley@SteelEye.com>,
Mike Christie <michaelc@cs.wisc.edu>
Subject: [PATCH 18/21] scsi: propagate the swapdev hook into the scsi stack
Date: Wed, 06 Sep 2006 15:16:48 +0200 [thread overview]
Message-ID: <20060906133956.068570000@chello.nl> (raw)
In-Reply-To: <20060906131630.793619000@chello.nl>
[-- Attachment #1: scsi_swapdev.patch --]
[-- Type: text/plain, Size: 1874 bytes --]
Allow scsi devices to receive the swapdev notification.
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
CC: James E.J. Bottomley <James.Bottomley@SteelEye.com>
CC: Mike Christie <michaelc@cs.wisc.edu>
---
drivers/scsi/sd.c | 13 +++++++++++++
include/scsi/scsi_host.h | 7 +++++++
2 files changed, 20 insertions(+)
Index: linux-2.6/drivers/scsi/sd.c
===================================================================
--- linux-2.6.orig/drivers/scsi/sd.c
+++ linux-2.6/drivers/scsi/sd.c
@@ -892,6 +892,18 @@ static long sd_compat_ioctl(struct file
}
#endif
+static int sd_swapdev(struct gendisk *disk, int enable)
+{
+ int error = 0;
+ struct scsi_disk *sdkp = scsi_disk(disk);
+ struct scsi_device *sdp = sdkp->device;
+
+ if (sdp->host->hostt->swapdev)
+ error = sdp->host->hostt->swapdev(sdp, enable);
+
+ return error;
+}
+
static struct block_device_operations sd_fops = {
.owner = THIS_MODULE,
.open = sd_open,
@@ -903,6 +915,7 @@ static struct block_device_operations sd
#endif
.media_changed = sd_media_changed,
.revalidate_disk = sd_revalidate_disk,
+ .swapdev = sd_swapdev,
};
/**
Index: linux-2.6/include/scsi/scsi_host.h
===================================================================
--- linux-2.6.orig/include/scsi/scsi_host.h
+++ linux-2.6/include/scsi/scsi_host.h
@@ -288,6 +288,13 @@ struct scsi_host_template {
int (*suspend)(struct scsi_device *, pm_message_t state);
/*
+ * Notify that this device is used for swapping.
+ *
+ * Status: OPTIONAL
+ */
+ int (*swapdev)(struct scsi_device *, int enable);
+
+ /*
* Name of proc directory
*/
char *proc_name;
--
--
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next prev parent reply other threads:[~2006-09-06 13:16 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-09-06 13:16 [PATCH 00/21] vm deadlock avoidance for NBD, NFS and iSCSI (take 6) Peter Zijlstra
2006-09-06 13:16 ` [PATCH 01/21] mm: serialize access to min_free_kbytes Peter Zijlstra
2006-09-06 13:16 ` [PATCH 02/21] net: vm deadlock avoidance core Peter Zijlstra
2006-09-06 13:16 ` [PATCH 03/21] mm: add support for non block device backed swap files Peter Zijlstra
2006-09-06 13:16 ` [PATCH 04/21] mm: methods for teaching filesystems about PG_swapcache pages Peter Zijlstra
2006-09-06 13:16 ` [PATCH 05/21] uml: rename arch/um remove_mapping() Peter Zijlstra
2006-09-06 13:16 ` [PATCH 06/21] nfs: teach the NFS client how to treat PG_swapcache pages Peter Zijlstra
2006-09-06 13:16 ` [PATCH 07/21] nfs: add a comment explaining the use of PG_private in the NFS client Peter Zijlstra
2006-09-06 13:16 ` [PATCH 08/21] nfs: enable swap on NFS Peter Zijlstra
2006-09-06 13:16 ` [PATCH 09/21] nfs: make swap on NFS robust Peter Zijlstra
2006-09-06 13:16 ` [PATCH 10/21] block: elevator selection and pinning Peter Zijlstra
2006-09-06 13:46 ` Jens Axboe
2006-09-07 16:01 ` Peter Zijlstra
2006-09-07 16:33 ` Jens Axboe
2006-09-06 13:16 ` [PATCH 11/21] nbd: limit blk_queue Peter Zijlstra
2006-09-06 15:17 ` Erik Mouw
2006-09-06 17:45 ` Jens Axboe
2006-09-06 13:16 ` [PATCH 12/21] mm: block device swap notification Peter Zijlstra
2006-09-06 13:16 ` [PATCH 13/21] nbd: use swapdev hook to make swap deadlock free Peter Zijlstra
2006-09-06 13:16 ` [PATCH 14/21] uml: enable scsi and add iscsi config Peter Zijlstra
2006-09-11 15:49 ` Jeff Dike
2006-09-06 13:16 ` [PATCH 15/21] iscsi: kernel side tcp connect Peter Zijlstra
2006-09-06 13:16 ` [PATCH 16/21] iscsi: fixup of the ep_connect patch Peter Zijlstra
2006-09-06 13:16 ` [PATCH 17/21] iscsi: add session context to ep_connect Peter Zijlstra
2006-09-06 13:16 ` Peter Zijlstra [this message]
2006-09-06 13:16 ` [PATCH 19/21] netlink: add SOCK_VMIO support to AF_NETLINK Peter Zijlstra
2006-09-06 13:16 ` [PATCH 20/21] mm: a process flags to avoid blocking allocations Peter Zijlstra
2006-09-06 13:16 ` [PATCH 21/21] iscsi: support for swapping over iSCSI Peter Zijlstra
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