Revision 7f4a2a97e324e8c826d1d983bc8efb5c59194f02 authored by Mark Fasheh on 11 December 2006, 19:06:36 UTC, committed by Mark Fasheh on 29 December 2006, 00:38:59 UTC
Mmap-heavy clustered workloads were sometimes finding stale data on mmap reads. The solution is to call unmap_mapping_range() on any down convert of a data lock. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
1 parent 6c2aad0
do_mounts.h
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/syscalls.h>
#include <linux/unistd.h>
#include <linux/slab.h>
#include <linux/mount.h>
#include <linux/major.h>
#include <linux/root_dev.h>
void change_floppy(char *fmt, ...);
void mount_block_root(char *name, int flags);
void mount_root(void);
extern int root_mountflags;
extern char *root_device_name;
static inline int create_dev(char *name, dev_t dev)
{
sys_unlink(name);
return sys_mknod(name, S_IFBLK|0600, new_encode_dev(dev));
}
#if BITS_PER_LONG == 32
static inline u32 bstat(char *name)
{
struct stat64 stat;
if (sys_stat64(name, &stat) != 0)
return 0;
if (!S_ISBLK(stat.st_mode))
return 0;
if (stat.st_rdev != (u32)stat.st_rdev)
return 0;
return stat.st_rdev;
}
#else
static inline u32 bstat(char *name)
{
struct stat stat;
if (sys_newstat(name, &stat) != 0)
return 0;
if (!S_ISBLK(stat.st_mode))
return 0;
return stat.st_rdev;
}
#endif
#ifdef CONFIG_BLK_DEV_RAM
int __init rd_load_disk(int n);
int __init rd_load_image(char *from);
#else
static inline int rd_load_disk(int n) { return 0; }
static inline int rd_load_image(char *from) { return 0; }
#endif
#ifdef CONFIG_BLK_DEV_INITRD
int __init initrd_load(void);
#else
static inline int initrd_load(void) { return 0; }
#endif
#ifdef CONFIG_BLK_DEV_MD
void md_run_setup(void);
#else
static inline void md_run_setup(void) {}
#endif
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