d/freebsd-dev
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

If a proposed swap device exceeds the 8G artificial limit which out

Browse Source 
radix-tree code imposes, truncate the device instead of rejecting it.
This commit is contained in:
Poul-Henning Kamp 2003-07-18 11:01:23 +00:00
parent ec38b344cb
commit d3dd89ab11
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=117725
1 changed files with 6 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
sys/vm/swap_pager.c
View File

@ -2470,7 +2470,7 @@ swaponvp(td, vp, dev, nblks)
long blk;
swblk_t dvbase;
int error;
u_long aligned_nblks;
u_long aligned_nblks, mblocks;
off_t mediasize;
if (!swapdev_vp) {
@ -2520,11 +2520,11 @@ swaponvp(td, vp, dev, nblks)
* If we go beyond this, we get overflows in the radix
* tree bitmap code.
*/
if (nblks > 0x40000000 / BLIST_META_RADIX / nswdev) {
printf("exceeded maximum of %d blocks per swap unit\n",
0x40000000 / BLIST_META_RADIX / nswdev);
(void) VOP_CLOSE(vp, FREAD | FWRITE, td->td_ucred, td);
return (ENXIO);
mblocks = 0x40000000 / BLIST_META_RADIX / nswdev;
if (nblks > mblocks) {
printf("WARNING: reducing size to maximum of %d blocks per swap unit\n",
mblocks);
nblks = mblocks;
}
/*
* nblks is in DEV_BSIZE'd chunks, convert to PAGE_SIZE'd chunks.