K 10
svn:author
V 6
kevans
K 8
svn:date
V 27
2020-11-07T05:10:46.046289Z
K 7
svn:log
V 583
imgact_binmisc: abstract away the list lock (NFC)

This module handles relatively few execs (initial qemu-user-static, then
qemu-user-static handles exec'ing itself for binaries it's already running),
but all execs pay the price of at least taking the relatively expensive
sx/slock to check for a match when this module is loaded. Future work will
almost certainly swap this out for another lock, perhaps an rmslock.

The RLOCK/WLOCK phrasing was chosen based on what the callers are really
wanting, rather than using the verbiage typically appropriate for an sx.

MFC after:	1 week

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