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Quoting David Howells (dhowells@redhat.com): > Create a dynamically sized pool of threads for doing very slow work items, such > as invoking mkdir() or rmdir() - things that may take a long time and may > sleep, holding mutexes/semaphores and hogging a thread, and are thus unsuitable > for workqueues. > > The number of threads is always at least a settable minimum, but more are > started when there's more work to do, up to a limit. Because of the nature of > the load, it's not suitable for a 1-thread-per-CPU type pool. A system with > one CPU may well want several threads. > > This is used by FS-Cache to do slow caching operations in the background, such > as looking up, creating or deleting cache objects. > > Signed-off-by: David Howells <dhowells@redhat.com> Acked-by: Serge Hallyn <serue@us.ibm.com> | ||||||||||||
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