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* Now uses _kern_write_stat() directly in order to resize the swap file

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without filling it with zeros (ie. make use of B_STAT_SIZE_INSECURE).
* Added TODO that closing the file descriptor in swap_init_post_modules()
  (that should probably renamed to swap_init_post_boot_device()) is not really
  a good idea.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@26797 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Axel Dörfler 2008-08-04 16:10:25 +00:00
parent c7dc57457d
commit 4468706ca3
1 changed files with 17 additions and 7 deletions
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24
src/system/kernel/vm/VMAnonymousCache.cpp
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@ -16,17 +16,21 @@
#include <string.h>
#include <unistd.h>
#include <arch_config.h>
#include <heap.h>
#include <KernelExport.h>
#include <NodeMonitor.h>
#include <arch_config.h>
#include <driver_settings.h>
#include <fs_interface.h>
#include <heap.h>
#include <slab/Slab.h>
#include <syscalls.h>
#include <util/DoublyLinkedList.h>
#include <util/OpenHashTable.h>
#include <vfs.h>
#include <vm.h>
#include <vm_page.h>
#include <vm_priv.h>
#include <util/DoublyLinkedList.h>
#include <util/OpenHashTable.h>
#include <driver_settings.h>
#if ENABLE_SWAP_SUPPORT
@ -765,13 +769,19 @@ swap_init_post_modules()
dprintf("Can't open/create /var/swap: %s\n", strerror(errno));
return;
}
close(fd);
if (truncate("/var/swap", size) < 0) {
struct stat stat;
stat.st_size = size;
if (_kern_write_stat(fd, NULL, false, &stat, sizeof(struct stat),
B_STAT_SIZE | B_STAT_SIZE_INSECURE) != B_OK) {
dprintf("Failed to resize /var/swap to %lld bytes: %s\n", size,
strerror(errno));
}
close(fd);
// TODO: if we don't keep the file open, O_NOCACHE is going to be
// removed - we must not do this while we're using the swap file
swap_file_add("/var/swap");
}