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| author | alc <alc@FreeBSD.org> | 2013-08-23 17:27:12 +0000 |
|---|---|---|
| committer | alc <alc@FreeBSD.org> | 2013-08-23 17:27:12 +0000 |
| commit | 1a535523cd7d4a25cbdb68b60e29942c9f7afef3 (patch) | |
| tree | b3d35fed9a216baba77d1d4ee4e085d1772299e9 /sys/vm/vm_radix.h | |
| parent | e9e439afa64e6d870aca90618c2201791001ca4c (diff) | |
| download | FreeBSD-src-1a535523cd7d4a25cbdb68b60e29942c9f7afef3.zip FreeBSD-src-1a535523cd7d4a25cbdb68b60e29942c9f7afef3.tar.gz | |
Addendum to r254141: The call to vm_radix_insert() in vm_page_cache() can
reclaim the last preexisting cached page in the object, resulting in a call
to vdrop(). Detect this scenario so that the vnode's hold count is
correctly maintained. Otherwise, we panic.
Reported by: scottl
Tested by: pho
Discussed with: attilio, jeff, kib
Diffstat (limited to 'sys/vm/vm_radix.h')
| -rw-r--r-- | sys/vm/vm_radix.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/sys/vm/vm_radix.h b/sys/vm/vm_radix.h index 73c9cc1..4491860 100644 --- a/sys/vm/vm_radix.h +++ b/sys/vm/vm_radix.h @@ -37,6 +37,7 @@ void vm_radix_init(void); int vm_radix_insert(struct vm_radix *rtree, vm_page_t page); +boolean_t vm_radix_is_singleton(struct vm_radix *rtree); vm_page_t vm_radix_lookup(struct vm_radix *rtree, vm_pindex_t index); vm_page_t vm_radix_lookup_ge(struct vm_radix *rtree, vm_pindex_t index); vm_page_t vm_radix_lookup_le(struct vm_radix *rtree, vm_pindex_t index); |
