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| author | Davide Libenzi <davidel@xmailserver.org> | 2007-05-15 10:40:41 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-05-15 17:53:59 +0200 |
| commit | d47de16c7221968d3eab899d7540efa5ba77af5a (patch) | |
| tree | 289c3dc8e4b3121a9a4b1846ae9acbd355b4b541 /fs/afs | |
| parent | Revert "ipmi: add new IPMI nmi watchdog handling" (diff) | |
| download | linux-d47de16c7221968d3eab899d7540efa5ba77af5a.tar.xz linux-d47de16c7221968d3eab899d7540efa5ba77af5a.zip | |
fix epoll single pass code and add wait-exclusive flag
Fixes the epoll single pass code. During the unlocked event delivery (to
userspace) code, the poll callback can re-issue new events, and we must
receive them correctly. Since we loop in a lockless fashion, we want to be
O(nready), and we don't want to flash on/off the spinlock for every event, we
have the poll callback to use a secondary list to queue events while we're
inside the event delivery loop. The rw_semaphore has been turned into a
mutex. This patch also adds the wait-exclusive flag, as suggested by Davi
Arnaut.
Signed-off-by: Davide Libenzi <davidel@xmailserver.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/afs')
0 files changed, 0 insertions, 0 deletions