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Atomically update vm_object vnp_size, where atomic is available.

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This will be used later, where it matters on 32bit arches.

Reviewed by:	markj
Tested by:	pho
Sponsored by:	The FreeBSD Foundation
Differential revision:	https://reviews.freebsd.org/D25968
This commit is contained in:
Konstantin Belousov 2020-08-16 20:52:24 +00:00
parent 37f253ed0f
commit 419e5698a0
1 changed files with 4 additions and 0 deletions
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4
sys/vm/vnode_pager.c
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@ -520,7 +520,11 @@ vnode_pager_setsize(struct vnode *vp, vm_ooffset_t nsize)
vm_page_xunbusy(m); vm_page_xunbusy(m);
} }
out: out:
#if defined(__powerpc__) && !defined(__powerpc64__)
object->un_pager.vnp.vnp_size = nsize; object->un_pager.vnp.vnp_size = nsize;
#else
atomic_store_64(&object->un_pager.vnp.vnp_size, nsize);
#endif
object->size = nobjsize; object->size = nobjsize;
VM_OBJECT_WUNLOCK(object); VM_OBJECT_WUNLOCK(object);
} }