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ufs_bmaparray() may block on IO, drop vm mutex and aquire Giant when

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calling it from the pager routine
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alfred 2001-05-23 10:30:25 +00:00
parent 587340efa6
commit edd79c680a
1 changed files with 10 additions and 0 deletions
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10
sys/ufs/ufs/ufs_readwrite.c
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@ -646,9 +646,16 @@ ffs_getpages(ap)
reqlblkno = foff / bsize;
poff = (foff % bsize) / PAGE_SIZE;
mtx_unlock(&vm_mtx);
mtx_lock(&Giant);
dp = VTOI(vp)->i_devvp;
if (ufs_bmaparray(vp, reqlblkno, &reqblkno, &bforwards, &bbackwards)
|| (reqblkno == -1)) {
mtx_unlock(&Giant);
mtx_lock(&vm_mtx);
for(i = 0; i < pcount; i++) {
if (i != ap->a_reqpage)
vm_page_free(ap->a_m[i]);
@ -664,6 +671,9 @@ ffs_getpages(ap)
}
}
mtx_unlock(&Giant);
mtx_lock(&vm_mtx);
physoffset = (off_t)reqblkno * DEV_BSIZE + poff * PAGE_SIZE;
pagesperblock = bsize / PAGE_SIZE;
/*