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| author | alc <alc@FreeBSD.org> | 2003-09-08 02:45:03 +0000 |
|---|---|---|
| committer | alc <alc@FreeBSD.org> | 2003-09-08 02:45:03 +0000 |
| commit | a81d9ad0b98e80387ddd4e42ca6d4d3a2e30c1ec (patch) | |
| tree | b2790809d73f520fb71ebb6aa2acc4efb7933854 /etc | |
| parent | ce0ede96f1c4135dba204423dccf8e16f7dc1dbd (diff) | |
| download | FreeBSD-src-a81d9ad0b98e80387ddd4e42ca6d4d3a2e30c1ec.zip FreeBSD-src-a81d9ad0b98e80387ddd4e42ca6d4d3a2e30c1ec.tar.gz | |
Introduce a new pmap function, pmap_extract_and_hold(). This function
atomically extracts and holds the physical page that is associated with the
given pmap and virtual address. Such a function is needed to make the
memory mapping optimizations used by, for example, pipes and raw disk I/O
MP-safe.
Reviewed by: tegge
Diffstat (limited to 'etc')
0 files changed, 0 insertions, 0 deletions
