Revision 7bf811a595a895b7a886dcf218d0d34f97df76dc authored by Josef Bacik on 08 October 2013, 02:11:09 UTC, committed by Chris Mason on 11 October 2013, 01:27:56 UTC
Liu fixed part of this problem and unfortunately I steered him in slightly the
wrong direction and so didn't completely fix the problem. The problem is we
limit the size of the delalloc range we are looking for to max bytes and then we
try to lock that range. If we fail to lock the pages in that range we will
shrink the max bytes to a single page and re loop. However if our first page is
inside of the delalloc range then we will end up limiting the end of the range
to a period before our first page. This is illustrated below
[0 -------- delalloc range --------- 256mb]
[page]
So find_delalloc_range will return with delalloc_start as 0 and end as 128mb,
and then we will notice that delalloc_start < *start and adjust it up, but not
adjust delalloc_end up, so things go sideways. To fix this we need to not limit
the max bytes in find_delalloc_range, but in find_lock_delalloc_range and that
way we don't end up with this confusion. Thanks,
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>
1 parent 4871c15
dmi.h
#ifndef __DMI_H__
#define __DMI_H__
#include <linux/list.h>
#include <linux/mod_devicetable.h>
/* enum dmi_field is in mod_devicetable.h */
enum dmi_device_type {
DMI_DEV_TYPE_ANY = 0,
DMI_DEV_TYPE_OTHER,
DMI_DEV_TYPE_UNKNOWN,
DMI_DEV_TYPE_VIDEO,
DMI_DEV_TYPE_SCSI,
DMI_DEV_TYPE_ETHERNET,
DMI_DEV_TYPE_TOKENRING,
DMI_DEV_TYPE_SOUND,
DMI_DEV_TYPE_PATA,
DMI_DEV_TYPE_SATA,
DMI_DEV_TYPE_SAS,
DMI_DEV_TYPE_IPMI = -1,
DMI_DEV_TYPE_OEM_STRING = -2,
DMI_DEV_TYPE_DEV_ONBOARD = -3,
};
enum dmi_entry_type {
DMI_ENTRY_BIOS = 0,
DMI_ENTRY_SYSTEM,
DMI_ENTRY_BASEBOARD,
DMI_ENTRY_CHASSIS,
DMI_ENTRY_PROCESSOR,
DMI_ENTRY_MEM_CONTROLLER,
DMI_ENTRY_MEM_MODULE,
DMI_ENTRY_CACHE,
DMI_ENTRY_PORT_CONNECTOR,
DMI_ENTRY_SYSTEM_SLOT,
DMI_ENTRY_ONBOARD_DEVICE,
DMI_ENTRY_OEMSTRINGS,
DMI_ENTRY_SYSCONF,
DMI_ENTRY_BIOS_LANG,
DMI_ENTRY_GROUP_ASSOC,
DMI_ENTRY_SYSTEM_EVENT_LOG,
DMI_ENTRY_PHYS_MEM_ARRAY,
DMI_ENTRY_MEM_DEVICE,
DMI_ENTRY_32_MEM_ERROR,
DMI_ENTRY_MEM_ARRAY_MAPPED_ADDR,
DMI_ENTRY_MEM_DEV_MAPPED_ADDR,
DMI_ENTRY_BUILTIN_POINTING_DEV,
DMI_ENTRY_PORTABLE_BATTERY,
DMI_ENTRY_SYSTEM_RESET,
DMI_ENTRY_HW_SECURITY,
DMI_ENTRY_SYSTEM_POWER_CONTROLS,
DMI_ENTRY_VOLTAGE_PROBE,
DMI_ENTRY_COOLING_DEV,
DMI_ENTRY_TEMP_PROBE,
DMI_ENTRY_ELECTRICAL_CURRENT_PROBE,
DMI_ENTRY_OOB_REMOTE_ACCESS,
DMI_ENTRY_BIS_ENTRY,
DMI_ENTRY_SYSTEM_BOOT,
DMI_ENTRY_MGMT_DEV,
DMI_ENTRY_MGMT_DEV_COMPONENT,
DMI_ENTRY_MGMT_DEV_THRES,
DMI_ENTRY_MEM_CHANNEL,
DMI_ENTRY_IPMI_DEV,
DMI_ENTRY_SYS_POWER_SUPPLY,
DMI_ENTRY_ADDITIONAL,
DMI_ENTRY_ONBOARD_DEV_EXT,
DMI_ENTRY_MGMT_CONTROLLER_HOST,
DMI_ENTRY_INACTIVE = 126,
DMI_ENTRY_END_OF_TABLE = 127,
};
struct dmi_header {
u8 type;
u8 length;
u16 handle;
};
struct dmi_device {
struct list_head list;
int type;
const char *name;
void *device_data; /* Type specific data */
};
#ifdef CONFIG_DMI
struct dmi_dev_onboard {
struct dmi_device dev;
int instance;
int segment;
int bus;
int devfn;
};
extern int dmi_check_system(const struct dmi_system_id *list);
const struct dmi_system_id *dmi_first_match(const struct dmi_system_id *list);
extern const char * dmi_get_system_info(int field);
extern const struct dmi_device * dmi_find_device(int type, const char *name,
const struct dmi_device *from);
extern void dmi_scan_machine(void);
extern void dmi_set_dump_stack_arch_desc(void);
extern bool dmi_get_date(int field, int *yearp, int *monthp, int *dayp);
extern int dmi_name_in_vendors(const char *str);
extern int dmi_name_in_serial(const char *str);
extern int dmi_available;
extern int dmi_walk(void (*decode)(const struct dmi_header *, void *),
void *private_data);
extern bool dmi_match(enum dmi_field f, const char *str);
#else
static inline int dmi_check_system(const struct dmi_system_id *list) { return 0; }
static inline const char * dmi_get_system_info(int field) { return NULL; }
static inline const struct dmi_device * dmi_find_device(int type, const char *name,
const struct dmi_device *from) { return NULL; }
static inline void dmi_scan_machine(void) { return; }
static inline void dmi_set_dump_stack_arch_desc(void) { }
static inline bool dmi_get_date(int field, int *yearp, int *monthp, int *dayp)
{
if (yearp)
*yearp = 0;
if (monthp)
*monthp = 0;
if (dayp)
*dayp = 0;
return false;
}
static inline int dmi_name_in_vendors(const char *s) { return 0; }
static inline int dmi_name_in_serial(const char *s) { return 0; }
#define dmi_available 0
static inline int dmi_walk(void (*decode)(const struct dmi_header *, void *),
void *private_data) { return -1; }
static inline bool dmi_match(enum dmi_field f, const char *str)
{ return false; }
static inline const struct dmi_system_id *
dmi_first_match(const struct dmi_system_id *list) { return NULL; }
#endif
#endif /* __DMI_H__ */
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