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| author | alc <alc@FreeBSD.org> | 2007-11-30 07:14:42 +0000 |
|---|---|---|
| committer | alc <alc@FreeBSD.org> | 2007-11-30 07:14:42 +0000 |
| commit | 7e64e9843c86bf55f1675397d4e3fa03eb978896 (patch) | |
| tree | 9ac3c7756e7a5658ca1bbbb5c4a247761de93fd2 /lib/libkse/thread/thr_mutex_protocol.c | |
| parent | 39911d1f8271132636fdc616e40573bad0577e82 (diff) | |
| download | FreeBSD-src-7e64e9843c86bf55f1675397d4e3fa03eb978896.zip FreeBSD-src-7e64e9843c86bf55f1675397d4e3fa03eb978896.tar.gz | |
Improve get_pv_entry()'s handling of low-memory conditions. After page
allocation fails and pv entries are reclaimed, there may be an unused pv
entry in a pv chunk that survived the reclamation. However, previously,
after reclamation, get_pv_entry() did not look for an unused pv entry in
a surviving pv chunk; it simply retried the page allocation. Now, it
does look for an unused pv entry before retrying the page allocation.
Note: This only applies to RELENG_7. Earlier branches use a different
pv entry allocator.
MFC after: 6 weeks
Diffstat (limited to 'lib/libkse/thread/thr_mutex_protocol.c')
0 files changed, 0 insertions, 0 deletions
