Messages in this thread | | | Subject | Re: [PATCH] [Request for inclusion] Filesystem in Userspace | From | Miklos Szeredi <> | Date | Thu, 18 Nov 2004 09:17:13 +0100 |
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> I know I've asked before... but how is the "fuse-userspace-part > swapped out and memory full of dirty data on fuse" deadlock solved?
By either
1) not allowing share writable mappings
2) doing non-blocking asynchronous writepage
In the first case there will never be dirty data, since normal writes go synchronously through the page cache.
In the second case there is no deadlock, because the memory subsystem doesn't wait for data to be written. If the filesystem refuses to write back data in a timely manner, memory will get full and OOM killer will go to work. Deadlock simply cannot happen.
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