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- Synchronize updates to nswapdev using sw_dev_mtx.

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This commit is contained in:
Alan Cox 2003-10-29 07:51:41 +00:00
parent 65b8a8fed1
commit 0676a140b2
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=121649
1 changed files with 2 additions and 2 deletions
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4
sys/vm/swap_pager.c
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@ -2173,8 +2173,8 @@ swaponsomething(struct vnode *vp, void *id, u_long nblks, sw_strategy_t *strateg
sp->sw_first = dvbase;
sp->sw_end = dvbase + nblks;
TAILQ_INSERT_TAIL(&swtailq, sp, sw_list);
mtx_unlock(&sw_dev_mtx);
nswapdev++;
mtx_unlock(&sw_dev_mtx);
swap_pager_avail += nblks;
swap_pager_full = 0;
}
@ -2277,10 +2277,10 @@ swapoff(struct thread *td, struct swapoff_args *uap)
sp->sw_id = NULL;
mtx_lock(&sw_dev_mtx);
TAILQ_REMOVE(&swtailq, sp, sw_list);
nswapdev--;
mtx_unlock(&sw_dev_mtx);
if (swdevhd == sp)
swdevhd = NULL;
nswapdev--;
blist_destroy(sp->sw_blist);
free(sp, M_VMPGDATA);