| commit | df8d1020745c0668cc93819c201cb92340fb7cdd | |
| author | Matthew Dillon <dillon@dragonflybsd.org> | |
| Thu, 1 Dec 2005 18:40:56 +0000 (1 18:40 +0000) | ||
| committer | Matthew Dillon <dillon@dragonflybsd.org> | |
| Thu, 1 Dec 2005 18:40:56 +0000 (1 18:40 +0000) | ||
| tree | 4e43991f0e227d399616ff91ce61acfc7650602b | treesnapshot (tar.gz zip) |
| parent | 9e493fb5231c85032d0a86a114bde982aaa19516 | commitdiff |
The primary mbuf cluster management code needs to be made MPSAFE since
m_free() is now MPSAFE. This involves using atomic_*() increment and
decrement for the mbuf cluster ref count and using a serializer if there
is a potential for a double-free (if the ref count is 2 or greater). The
common code path will tend not to need the serializer unless the interface
is being tapped.
Reported-by: Peter Avalos <pavalos@theshell.com>
m_free() is now MPSAFE. This involves using atomic_*() increment and
decrement for the mbuf cluster ref count and using a serializer if there
is a potential for a double-free (if the ref count is 2 or greater). The
common code path will tend not to need the serializer unless the interface
is being tapped.
Reported-by: Peter Avalos <pavalos@theshell.com>
| sys/kern/uipc_mbuf.c | diffblobblamehistory | |
| sys/kern/uipc_syscalls.c | diffblobblamehistory |