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author | jhb <jhb@FreeBSD.org> | 2002-02-27 18:30:01 +0000 |
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committer | jhb <jhb@FreeBSD.org> | 2002-02-27 18:30:01 +0000 |
commit | ec01b5bdbc40025303ba133be03a747c8dc62a2c (patch) | |
tree | 2a10480f644fa7d553c28438685c71db5365dc83 /sys/fs/portalfs | |
parent | ce9dcc878409c8e9fe6934c5dc7793c6d4f2bc8e (diff) | |
download | FreeBSD-src-ec01b5bdbc40025303ba133be03a747c8dc62a2c.zip FreeBSD-src-ec01b5bdbc40025303ba133be03a747c8dc62a2c.tar.gz |
Temporarily lock Giant while we update td_ucred. The proc lock doesn't
fully protect p_ucred yet so Giant is needed until all the p_ucred
locking is done. This is the original reason td_ucred was not used
immediately after its addition. Unfortunately, not using td_ucred is
not enough to avoid problems. Since p_ucred could be stale, we could
actually be dereferencing a stale pointer to dink with the refcount, so
we really need Giant to avoid foot-shooting. This allows td_ucred to
be safely used as well.
Diffstat (limited to 'sys/fs/portalfs')
0 files changed, 0 insertions, 0 deletions