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Starting in r118390, swaponsomething() began to reserve the blocks at the

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beginning of a swap area for a disk label.  However, neither r118390 nor
r118544, which increased the reservation from one to two blocks, correctly
accounted for these blocks when updating the variable "swap_pager_avail".
This change corrects that error.

Reviewed by:	kib
MFC after:	5 days
This commit is contained in:
Alan Cox 2017-06-06 16:52:07 +00:00
parent 2d15c3cb12
commit 761097c85e
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=319627
1 changed files with 1 additions and 1 deletions
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2
sys/vm/swap_pager.c
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@ -2203,7 +2203,7 @@ swaponsomething(struct vnode *vp, void *id, u_long nblks,
sp->sw_end = dvbase + nblks;
TAILQ_INSERT_TAIL(&swtailq, sp, sw_list);
nswapdev++;
swap_pager_avail += nblks;
swap_pager_avail += nblks - 2;
swap_total += (vm_ooffset_t)nblks * PAGE_SIZE;
swapon_check_swzone(swap_total / PAGE_SIZE);
swp_sizecheck();