Btrfs: Worker thread optimizations

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This changes the worker thread pool to maintain a list of idle threads,
avoiding a complex search for a good thread to wake up.

Threads have two states:

idle - we try to reuse the last thread used in hopes of improving the batching
ratios

busy - each time a new work item is added to a busy task, the task is
rotated to the end of the line.

Signed-off-by: Chris Mason <chris.mason@oracle.com>

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This commit is contained in:

Chris Mason 2008-06-11 20:21:24 -04:00

parent d05e5a4dad

commit 35d8ba6629

2 changed files with 73 additions and 34 deletions

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100

fs/btrfs/async-thread.c

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7

fs/btrfs/async-thread.h

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