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| author | alc <alc@FreeBSD.org> | 2003-09-12 07:13:15 +0000 |
|---|---|---|
| committer | alc <alc@FreeBSD.org> | 2003-09-12 07:13:15 +0000 |
| commit | 6808836f35763fea89846f4ea80bd59acea1fe37 (patch) | |
| tree | bc0f6e676df21de428cba2b64bc288816566654d /sys/kern/sys_pipe.c | |
| parent | 76fcb264a0e0f5a09371c6617c166472bd775658 (diff) | |
| download | FreeBSD-src-6808836f35763fea89846f4ea80bd59acea1fe37.zip FreeBSD-src-6808836f35763fea89846f4ea80bd59acea1fe37.tar.gz | |
pipe_build_write_buffer() only requires read access of the page that it
obtains from pmap_extract_and_hold().
Diffstat (limited to 'sys/kern/sys_pipe.c')
| -rw-r--r-- | sys/kern/sys_pipe.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/sys/kern/sys_pipe.c b/sys/kern/sys_pipe.c index 0e7d6f2..76e23b7 100644 --- a/sys/kern/sys_pipe.c +++ b/sys/kern/sys_pipe.c @@ -668,7 +668,8 @@ pipe_build_write_buffer(wpipe, uio) vm_page_unlock_queues(); return (EFAULT); } - wpipe->pipe_map.ms[i] = pmap_extract_and_hold(pmap, addr); + wpipe->pipe_map.ms[i] = pmap_extract_and_hold(pmap, addr, + VM_PROT_READ); if (wpipe->pipe_map.ms[i] == NULL) goto race; } |
