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[SSI] openssi/kernel/mm swapfile.c,NONE,1.2.2.1: msg#00108
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Subject: |
[SSI] openssi/kernel/mm swapfile.c,NONE,1.2.2.1 |
Update of /cvsroot/ssic-linux/openssi/kernel/mm
In directory sc8-pr-cvs1:/tmp/cvs-serv26509/openssi/kernel/mm
Added Files:
Tag: OPENSSI-RH
swapfile.c
Log Message:
M openssi/kernel/mm/swapfile.c
Fixed base panic that occurred when doing a swapoff of a device
that wasn't in use as a swap device.
--- NEW FILE: swapfile.c ---
/*
* linux/mm/swapfile.c
*
* Copyright (C) 1991, 1992, 1993, 1994 Linus Torvalds
* Swap reorganised 29.12.95, Stephen Tweedie
*/
#include <linux/slab.h>
#include <linux/smp_lock.h>
#include <linux/kernel_stat.h>
#include <linux/swap.h>
#include <linux/swapctl.h>
#include <linux/blkdev.h> /* for blk_size */
#include <linux/vmalloc.h>
#include <linux/pagemap.h>
#include <linux/shm.h>
#include <asm/pgtable.h>
[...1236 lines suppressed...]
if (!toff) /* first page is swap header */
toff++, i--;
*offset = toff;
swap_device_lock(swapdev);
do {
/* Don't read-ahead past the end of the swap area */
if (toff >= swapdev->max)
break;
/* Don't read in free or bad pages */
if (!swapdev->swap_map[toff])
break;
if (swapdev->swap_map[toff] == SWAP_MAP_BAD)
break;
toff++;
ret++;
} while (--i);
swap_device_unlock(swapdev);
return ret;
}
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