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Revision 761290309939743ddf97e2bd94c6da18c6436b79 authored by Christoph Hellwig on 07 August 2012, 06:02:02 UTC, committed by Ben Myers on 23 August 2012, 19:48:32 UTC 
xfs: unlock the AGI buffer when looping in xfs_dialloc
 
Also update some commens in the area to make the code easier to read.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Mark Tinguely <tinguely@sgi.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Ben Myers <bpm@sgi.com>
1 parent 0b9e3f6
Raw File
platform_pci.h 
#ifndef _XEN_PLATFORM_PCI_H
#define _XEN_PLATFORM_PCI_H

#define XEN_IOPORT_MAGIC_VAL 0x49d2
#define XEN_IOPORT_LINUX_PRODNUM 0x0003
#define XEN_IOPORT_LINUX_DRVVER  0x0001

#define XEN_IOPORT_BASE 0x10

#define XEN_IOPORT_PLATFLAGS	(XEN_IOPORT_BASE + 0) /* 1 byte access (R/W) */
#define XEN_IOPORT_MAGIC	(XEN_IOPORT_BASE + 0) /* 2 byte access (R) */
#define XEN_IOPORT_UNPLUG	(XEN_IOPORT_BASE + 0) /* 2 byte access (W) */
#define XEN_IOPORT_DRVVER	(XEN_IOPORT_BASE + 0) /* 4 byte access (W) */

#define XEN_IOPORT_SYSLOG	(XEN_IOPORT_BASE + 2) /* 1 byte access (W) */
#define XEN_IOPORT_PROTOVER	(XEN_IOPORT_BASE + 2) /* 1 byte access (R) */
#define XEN_IOPORT_PRODNUM	(XEN_IOPORT_BASE + 2) /* 2 byte access (W) */

#define XEN_UNPLUG_ALL_IDE_DISKS	(1<<0)
#define XEN_UNPLUG_ALL_NICS		(1<<1)
#define XEN_UNPLUG_AUX_IDE_DISKS	(1<<2)
#define XEN_UNPLUG_ALL			(XEN_UNPLUG_ALL_IDE_DISKS|\
					 XEN_UNPLUG_ALL_NICS|\
					 XEN_UNPLUG_AUX_IDE_DISKS)

#define XEN_UNPLUG_UNNECESSARY 		(1<<16)
#define XEN_UNPLUG_NEVER	 		(1<<17)

static inline int xen_must_unplug_nics(void) {
#if (defined(CONFIG_XEN_NETDEV_FRONTEND) || \
		defined(CONFIG_XEN_NETDEV_FRONTEND_MODULE)) && \
		defined(CONFIG_XEN_PVHVM)
        return 1;
#else
        return 0;
#endif
}

static inline int xen_must_unplug_disks(void) {
#if (defined(CONFIG_XEN_BLKDEV_FRONTEND) || \
		defined(CONFIG_XEN_BLKDEV_FRONTEND_MODULE)) && \
		defined(CONFIG_XEN_PVHVM)
        return 1;
#else
        return 0;
#endif
}

extern int xen_platform_pci_unplug;

#endif /* _XEN_PLATFORM_PCI_H */
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