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https://serverfault.com/questions/945810/does-glusterfs-fuse-properly-support-mmap
The server can redirect client mmap requests to any SHMLBA aligned offset in the custom address space attached to the fuse channel. The address space is managed by the server using mmap/munmap(2).
http://lkml.iu.edu/hypermail/linux/kernel/1002.1/00413.html
Implement FUSE direct mmap support. The server can redirect client mmap requests to any SHMLBA aligned offset in the custom address space attached to the fuse channel.
http://support.fusetg.com/index.php
FuseTG Support - Fuse Technology Group
https://sourceforge.net/p/fuse/mailman/message/27319035/
Hi all, Are there any limits on mmap( ) size that fuse supports? I have a very simple fuse-based filesystem that's backed by an ext3. It does nothing but converts "fuse_operations" into corresponding ext3 file calls. I opened the a file and truncated it to be certain size X ( 100GB for example ).
https://github.com/libfuse/osspd/commit/e22c0ae083f8f5175e07f79bd46323665566c881
The shmem based FUSE dmmap support got NACKed due to API and implementation ugliness and new custom address spaace based one is pending. Reimplement osspd mmap support accordingly. Make osspd test whether FUSE_MMAP_DONT_COPY is defined by libfuse and if so enable mmap support automatically. Loading branch information...
https://github.com/libfuse/osspd/commit/14a9cff0c29050cc2788c9f3850818b13cdb7d3e
Implement mmap support with STORE and RETRIEVE notifications This one doesn't use server side mmap of the fuse device to access the contents of the client side memory maps. Instead it uses the STORE and RETRIEVE notifications for this purpose.
http://linux-kernel.2935.n7.nabble.com/PATCHSET-FUSE-implement-direct-mmap-take-2-td431656.html
This patchset implements direct mmap support for FUSE (and CUSE). Each direct mmap area is backed by anonymous mapping (shmem_file) and the FUSE server can decide how they are shared. mmap request is handled in two steps. MMAP first queries the server whether it wants to share the mapping with an existing one or create a new one, and if so, with which flags.
https://sourceforge.net/p/fuse/mailman/message/34212452/
From: "Jader H. Silva" <jaderhs5@...> These are libfuse changes. Implement cuse mmap, munmap and notify retrieve reply callbacks --- include/cuse_lowlevel.h 5 ...
http://lkml.iu.edu/hypermail/linux/kernel/1002.1/01760.html
> necessarily using server side mmaps (server side mmap is also a > possibility, but not an easy one if it has to cooperate with the > page cache). Device mmap use cases might not work very well if the server can't mmap directly. > Basically all we need to ensure, is that the mmap API doesn't conflict > with the above usage. The problem is that ...
http://fuse.996288.n3.nabble.com/PATCH-cuse-mmap-support-td13121.html
[PATCH] cuse mmap support. From: "Jader H. Silva" <jaderhs5@...> Implement cuse mmap using shmem. Pages must be read/written using NOTIFY_RETRIEVE and NOTIFY_STORE --- fs/fuse/cuse.c ... Fuse. Search everywhere only in this topic Advanced Search [PATCH] cuse mmap support
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