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authorLinus Torvalds <torvalds@g5.osdl.org>2005-12-11 20:38:17 -0800
committerLinus Torvalds <torvalds@g5.osdl.org>2005-12-11 20:38:17 -0800
commit67121172f9753f38689651b613a4850e0e75876f (patch)
treecfb6ea8365c44a43ee254385c7d246f0418cedd0 /drivers
parent913f2d792ff584bf9ebf5968472b3e4ffe0fd9c8 (diff)
Allow arbitrary read-only shared pfn-remapping too
The VM layer (for historical reasons) turns a read-only shared mmap into a private-like mapping with the VM_MAYWRITE bit clear. Thus checking just VM_SHARED isn't actually sufficient. So use a trivial helper function for the cases where we wanted to inquire if a mapping was COW-like or not. Moo! Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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