This patch introduces busy waiting for pipes similar to network sockets.
When pipe is full or empty a thread busy waits for some microseconds before
sleeping. This avoids the sleep and wakeup overhead and improves
performance in case wakeup happens very fast. It uses a new field in
pipe_inode_info
This patch introduces busy waiting for pipes similar to network sockets.
When pipe is full or empty a thread busy waits for some microseconds before
sleeping. This avoids the sleep and wakeup overhead and improves
performance in case wakeup happens very fast. It uses a new field in
pipe_inode_info
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