Changes in Kconfig

24fe962c - fuse: {io-uring} Handle SQEs - register commands

Mon, 20 Jan 2025 01:28:59 +0000

fuse: {io-uring} Handle SQEs - register commandsThis adds basic support for ring SQEs (with opcode=IORING_OP_URING_CMD).For now only FUSE_IO_URING_CMD_REGISTER is handled to register queueentries.Signed-off-by: Bernd Schubert Reviewed-by: Pavel Begunkov # io_uringReviewed-by: Luis Henriques Signed-off-by: Miklos Szeredi List of files: /linux-6.15/fs/fuse/Kconfig

7dc4e97a - fuse: introduce FUSE_PASSTHROUGH capability

Fri, 09 Feb 2024 14:57:17 +0000

fuse: introduce FUSE_PASSTHROUGH capabilityFUSE_PASSTHROUGH capability to passthrough FUSE operations to backingfiles will be made available with kernel config CONFIG_FUSE_PASSTHROUGH.When requesting FUSE_PASSTHROUGH, userspace needs to specify themax_stack_depth that is allowed for FUSE on top of backing files.Introduce the flag FOPEN_PASSTHROUGH and backing_id to fuse_open_outargument that can be used when replying to OPEN request, to setuppassthrough of io operations on the fuse inode to a backing file.Introduce a refcounted fuse_backing object that will be used toassociate an open backing file with a fuse inode.Signed-off-by: Amir Goldstein Signed-off-by: Miklos Szeredi List of files: /linux-6.15/fs/fuse/Kconfig

afd586f0 - dax: remove CONFIG_DAX_DRIVER

Mon, 29 Nov 2021 10:21:37 +0000

dax: remove CONFIG_DAX_DRIVERCONFIG_DAX_DRIVER only selects CONFIG_DAX now, so remove it.Signed-off-by: Christoph Hellwig Reviewed-by: Dan Williams Link: https://lore.kernel.org/r/20211129102203.2243509-4-hch@lst.deSigned-off-by: Dan Williams List of files: /linux-6.15/fs/fuse/Kconfig

c2d0ad00 - virtiofs: implement dax read/write operations

Wed, 19 Aug 2020 22:19:51 +0000

virtiofs: implement dax read/write operationsThis patch implements basic DAX support. mmap() is not implementedyet and will come in later patches. This patch looks into implemetingread/write.We make use of interval tree to keep track of per inode dax mappings.Do not use dax for file extending writes, instead just send WRITE messageto daemon (like we do for direct I/O path). This will keep write andi_size change atomic w.r.t crash.Signed-off-by: Stefan Hajnoczi Signed-off-by: Dr. David Alan Gilbert Signed-off-by: Vivek Goyal Signed-off-by: Liu Bo Signed-off-by: Peng Tao Cc: Dave Chinner Signed-off-by: Miklos Szeredi List of files: /linux-6.15/fs/fuse/Kconfig

1dd53957 - virtiofs: add a mount option to enable dax

Wed, 19 Aug 2020 22:19:47 +0000

virtiofs: add a mount option to enable daxAdd a mount option to allow using dax with virtio_fs.Signed-off-by: Vivek Goyal Signed-off-by: Miklos Szeredi List of files: /linux-6.15/fs/fuse/Kconfig

c1b0c627 - fuse: update project homepage

Thu, 23 Jul 2020 16:43:11 +0000

fuse: update project homepageAs stated in https://sourceforge.net/projects/fuse/, "the FUSE project hasmoved to https://github.com/libfuse/" in 22-Dec-2015. Update URLs toreflect this.Signed-off-by: André Almeida Signed-off-by: Miklos Szeredi List of files: /linux-6.15/fs/fuse/Kconfig

72ef5e52 - docs: fix broken references to text files

Tue, 14 Apr 2020 16:48:35 +0000

docs: fix broken references to text filesSeveral references got broken due to txt to ReST conversion.Several of them can be automatically fixed with: scripts/documentation-file-ref-check --fixReviewed-by: Mathieu Poirier # hwtracing/coresight/KconfigReviewed-by: Paul E. McKenney # memory-barrier.txtAcked-by: Alex Shi # translations/zh_CNAcked-by: Federico Vaga # translations/it_ITAcked-by: Marc Zyngier # kvm/arm64Signed-off-by: Mauro Carvalho Chehab Link: https://lore.kernel.org/r/6f919ddb83a33b5f2a63b6b5f0575737bb2b36aa.1586881715.git.mchehab+huawei@kernel.orgSigned-off-by: Jonathan Corbet List of files: /linux-6.15/fs/fuse/Kconfig

8d66fcb7 - fuse: fix Kconfig indentation

Wed, 20 Nov 2019 13:43:32 +0000

fuse: fix Kconfig indentationAdjust indentation from spaces to tab (+optional two spaces) as incoding style with command like: $ sed -e 's/^ /\t/' -i */KconfigSigned-off-by: Krzysztof Kozlowski Signed-off-by: Miklos Szeredi List of files: /linux-6.15/fs/fuse/Kconfig

a62a8ef9 - virtio-fs: add virtiofs filesystem

Tue, 12 Jun 2018 08:41:17 +0000

virtio-fs: add virtiofs filesystemAdd a basic file system module for virtio-fs. This does not yet containshared data support between host and guest or metadata coherency speedups.However it is already significantly faster than virtio-9p.Design Overview===============With the goal of designing something with better performance and local filesystem semantics, a bunch of ideas were proposed. - Use fuse protocol (instead of 9p) for communication between guest and host. Guest kernel will be fuse client and a fuse server will run on host to serve the requests. - For data access inside guest, mmap portion of file in QEMU address space and guest accesses this memory using dax. That way guest page cache is bypassed and there is only one copy of data (on host). This will also enable mmap(MAP_SHARED) between guests. - For metadata coherency, there is a shared memory region which contains version number associated with metadata and any guest changing metadata updates version number and other guests refresh metadata on next access. This is yet to be implemented.How virtio-fs differs from existing approaches==============================================The unique idea behind virtio-fs is to take advantage of the co-location ofthe virtual machine and hypervisor to avoid communication (vmexits).DAX allows file contents to be accessed without communication with thehypervisor. The shared memory region for metadata avoids communication inthe common case where metadata is unchanged.By replacing expensive communication with cheaper shared memory accesses,we expect to achieve better performance than approaches based on networkfile system protocols. In addition, this also makes it easier to achievelocal file system semantics (coherency).These techniques are not applicable to network file system protocols sincethe communications channel is bypassed by taking advantage of shared memoryon a local machine. This is why we decided to build virtio-fs rather thanfocus on 9P or NFS.Caching Modes=============Like virtio-9p, different caching modes are supported which determine thecoherency level as well. The “cache=FOO” and “writeback” options controlthe level of coherence between the guest and host filesystems. - cache=none metadata, data and pathname lookup are not cached in guest. They are always fetched from host and any changes are immediately pushed to host. - cache=always metadata, data and pathname lookup are cached in guest and never expire. - cache=auto metadata and pathname lookup cache expires after a configured amount of time (default is 1 second). Data is cached while the file is open (close to open consistency). - writeback/no_writeback These options control the writeback strategy. If writeback is disabled, then normal writes will immediately be synchronized with the host fs. If writeback is enabled, then writes may be cached in the guest until the file is closed or an fsync(2) performed. This option has no effect on mmap-ed writes or writes going through the DAX mechanism.Signed-off-by: Stefan Hajnoczi Signed-off-by: Vivek Goyal Acked-by: Michael S. Tsirkin Signed-off-by: Miklos Szeredi List of files: /linux-6.15/fs/fuse/Kconfig

ec8f24b7 - treewide: Add SPDX license identifier - Makefile/Kconfig

Sun, 19 May 2019 12:07:45 +0000

treewide: Add SPDX license identifier - Makefile/KconfigAdd SPDX license identifiers to all Make/Kconfig files which: - Have no license information of any formThese files fall under the project license, GPL v2 only. The resulting SPDXlicense identifier is: GPL-2.0-onlySigned-off-by: Thomas Gleixner Signed-off-by: Greg Kroah-Hartman List of files: /linux-6.15/fs/fuse/Kconfig

60bcc88a - fuse: Add posix ACL support

Mon, 29 Aug 2016 13:46:37 +0000

fuse: Add posix ACL supportAdd a new INIT flag, FUSE_POSIX_ACL, for negotiating ACL support withuserspace. When it is set in the INIT response, ACL support will beenabled. ACL support also implies "default_permissions".When ACL support is enabled, the kernel will cache and have responsibilityfor enforcing ACLs. ACL xattrs will be passed to userspace, which isresponsible for updating the ACLs in the filesystem, keeping the file modein sync, and inheritance of default ACLs when new filesystem nodes arecreated.Signed-off-by: Seth Forshee Signed-off-by: Miklos Szeredi List of files: /linux-6.15/fs/fuse/Kconfig

807185eb - fuse: Move CUSE Kconfig entry from fs/Kconfig into fs/fuse/Kconfig

Wed, 29 Aug 2012 21:51:51 +0000

fuse: Move CUSE Kconfig entry from fs/Kconfig into fs/fuse/KconfigGiven that CUSE depends on FUSE, it only makes sense to move itsKconfig entry into the FUSE Kconfig file. Also, add a few grammaticaland semantic touchups.Signed-off-by: Robert P. J. Day Signed-off-by: Miklos Szeredi List of files: /linux-6.15/fs/fuse/Kconfig

3ef7784e - fs/Kconfig: move fuse out

Thu, 22 Jan 2009 07:33:25 +0000

fs/Kconfig: move fuse outSigned-off-by: Alexey Dobriyan List of files: /linux-6.15/fs/fuse/Kconfig