Changes in Kconfig

d7385ba1 - 9p: Remove INET dependency

Thu, 04 May 2023 19:47:23 +0000

9p: Remove INET dependency9pfs can run over assorted transports, so it doesn't have an INETdependency. Drop it and remove the includes of linux/inet.h.NET_9P_FD/trans_fd.o builds without INET or UNIX and is usable overplain file descriptors. However, tcp and unix functionality is stillbuilt and would generate runtime failures if used. Add imply INET andUNIX to NET_9P_FD, so functionality is enabled by default but can stillbe explicitly disabled.This allows configuring 9pfs over Xen with INET and UNIX disabled.Signed-off-by: Jason Andryuk Signed-off-by: David S. Miller List of files: /linux-6.15/fs/9p/Kconfig

24e42e32 - 9p: Use fscache indexing rewrite and reenable caching

Wed, 18 Nov 2020 09:06:42 +0000

9p: Use fscache indexing rewrite and reenable cachingChange the 9p filesystem to take account of the changes to fscache'sindexing rewrite and reenable caching in 9p.The following changes have been made: (1) The fscache_netfs struct is no more, and there's no need to register the filesystem as a whole. (2) The session cookie is now an fscache_volume cookie, allocated with fscache_acquire_volume(). That takes three parameters: a string representing the "volume" in the index, a string naming the cache to use (or NULL) and a u64 that conveys coherency metadata for the volume. For 9p, I've made it render the volume name string as: "9p,," where the cachetag is replaced by the aname if it wasn't supplied. This probably needs rethinking a bit as the aname can have slashes in it. It might be better to hash the cachetag and use the hash or I could substitute commas for the slashes or something. (3) The fscache_cookie_def is no more and needed information is passed directly to fscache_acquire_cookie(). The cache no longer calls back into the filesystem, but rather metadata changes are indicated at other times. fscache_acquire_cookie() is passed the same keying and coherency information as before. (4) The functions to set/reset/flush cookies are removed and fscache_use_cookie() and fscache_unuse_cookie() are used instead. fscache_use_cookie() is passed a flag to indicate if the cookie is opened for writing. fscache_unuse_cookie() is passed updates for the metadata if we changed it (ie. if the file was opened for writing). These are called when the file is opened or closed. (5) wait_on_page_bit[_killable]() is replaced with the specific wait functions for the bits waited upon. (6) I've got rid of some of the 9p-specific cache helper functions and called things like fscache_relinquish_cookie() directly as they'll optimise away if v9fs_inode_cookie() returns an unconditional NULL (which will be the case if CONFIG_9P_FSCACHE=n). (7) v9fs_vfs_setattr() is made to call fscache_resize() to change the size of the cache object.Notes: (A) We should call fscache_invalidate() if we detect that the server's copy of a file got changed by a third party, but I don't know where to do that. We don't need to do that when allocating the cookie as we get a check-and-invalidate when we initially bind to the cache object. (B) The copy-to-cache-on-writeback side of things will be handled in separate patch.Changes=======ver #3: - Canonicalise the cookie key and coherency data to make them endianness-independent.ver #2: - Use gfpflags_allow_blocking() rather than using flag directly. - fscache_acquire_volume() now returns errors.Signed-off-by: David Howells Acked-by: Jeff Layton Tested-by: Dominique Martinet cc: Eric Van Hensbergen cc: Latchesar Ionkov cc: v9fs-developer@lists.sourceforge.netcc: linux-cachefs@redhat.comLink: https://lore.kernel.org/r/163819664645.215744.1555314582005286846.stgit@warthog.procyon.org.uk/ # v1Link: https://lore.kernel.org/r/163906975017.143852.3459573173204394039.stgit@warthog.procyon.org.uk/ # v2Link: https://lore.kernel.org/r/163967178512.1823006.17377493641569138183.stgit@warthog.procyon.org.uk/ # v3Link: https://lore.kernel.org/r/164021573143.640689.3977487095697717967.stgit@warthog.procyon.org.uk/ # v4 List of files: /linux-6.15/fs/9p/Kconfig

01491a75 - fscache, cachefiles: Disable configuration

Mon, 25 Oct 2021 20:41:26 +0000

fscache, cachefiles: Disable configurationDisable fscache and cachefiles in Kconfig whilst it is rewritten.Signed-off-by: David Howells Reviewed-by: Jeff Layton cc: linux-cachefs@redhat.comLink: https://lore.kernel.org/r/163819576672.215744.12444272479560406780.stgit@warthog.procyon.org.uk/ # v1Link: https://lore.kernel.org/r/163906882835.143852.11073015983885872901.stgit@warthog.procyon.org.uk/ # v2Link: https://lore.kernel.org/r/163967075113.1823006.277316290062782998.stgit@warthog.procyon.org.uk/ # v3Link: https://lore.kernel.org/r/164021481179.640689.2004199594774033658.stgit@warthog.procyon.org.uk/ # v4 List of files: /linux-6.15/fs/9p/Kconfig

eb497943 - 9p: Convert to using the netfs helper lib to do reads and caching

Tue, 02 Nov 2021 08:29:55 +0000

9p: Convert to using the netfs helper lib to do reads and cachingConvert the 9p filesystem to use the netfs helper lib to handle readpage,readahead and write_begin, converting those into a common issue_op for thefilesystem itself to handle. The netfs helper lib also handles readingfrom fscache if a cache is available, and interleaving reads from bothsources.This change also switches from the old fscache I/O API to the new one,meaning that fscache no longer keeps track of netfs pages and instead doesasync DIO between the backing files and the 9p file pagecache. As a partof this change, the handling of PG_fscache changes. It now just means thatthe cache has a write I/O operation in progress on a page (PG_lockedis used for a read I/O op).Note that this is a cut-down version of the fscache rewrite and does notchange any of the cookie and cache coherency handling.Changes=======ver #4: - Rebase on top of folios. - Don't use wait_on_page_bit_killable().ver #3: - v9fs_req_issue_op() needs to terminate the subrequest. - v9fs_write_end() needs to call SetPageUptodate() a bit more often. - It's not CONFIG_{AFS,V9FS}_FSCACHE[1] - v9fs_init_rreq() should take a ref on the p9_fid and the cleanup should drop it [from Dominique Martinet].Signed-off-by: David Howells Reviewed-and-tested-by: Dominique Martinet cc: v9fs-developer@lists.sourceforge.netcc: linux-cachefs@redhat.comLink: https://lore.kernel.org/r/YUm+xucHxED+1MJp@codewreck.org/ [1]Link: https://lore.kernel.org/r/163162772646.438332.16323773205855053535.stgit@warthog.procyon.org.uk/ # rfcLink: https://lore.kernel.org/r/163189109885.2509237.7153668924503399173.stgit@warthog.procyon.org.uk/ # rfc v2Link: https://lore.kernel.org/r/163363943896.1980952.1226527304649419689.stgit@warthog.procyon.org.uk/ # v3Link: https://lore.kernel.org/r/163551662876.1877519.14706391695553204156.stgit@warthog.procyon.org.uk/ # v4Link: https://lore.kernel.org/r/163584179557.4023316.11089762304657644342.stgit@warthog.procyon.org.uk # rebase on folioSigned-off-by: Dominique Martinet List of files: /linux-6.15/fs/9p/Kconfig

1f5bd6a2 - 9p: Fix Kconfig indentation

Wed, 20 Nov 2019 13:43:40 +0000

9p: Fix Kconfig indentationAdjust indentation from spaces to tab (+optional two spaces) as incoding style with command like: $ sed -e 's/^ /\t/' -i */KconfigLink: http://lkml.kernel.org/r/20191120134340.16770-1-krzk@kernel.orgSigned-off-by: Krzysztof Kozlowski Signed-off-by: Dominique Martinet List of files: /linux-6.15/fs/9p/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/9p/Kconfig

91581e4c - fs/*/Kconfig: drop links to 404-compliant http://acl.bestbits.at

Wed, 20 Dec 2017 13:58:52 +0000

fs/*/Kconfig: drop links to 404-compliant http://acl.bestbits.atThis link is replicated in most filesystems' config stanzas. Referringto an archived version of that site is pointless as it mostly deals withpatches; user documentation is available elsewhere.Signed-off-by: Adam Borowski CC: Alexander Viro Reviewed-by: Darrick J. Wong Acked-by: Jan Kara Acked-by: Dave Kleikamp Acked-by: David Sterba Acked-by: "Yan, Zheng" Acked-by: Chao Yu Acked-by: Jaegeuk Kim Acked-by: Steve French Signed-off-by: Jonathan Corbet List of files: /linux-6.15/fs/9p/Kconfig

d9a73859 - fs/9p: xattr: add trusted and security namespaces

Wed, 29 May 2013 19:09:39 +0000

fs/9p: xattr: add trusted and security namespacesAllow requests for security.* and trusted.* xattr name spacesto pass through to server.The new files are 99% cut and paste from fs/9p/xattr_user.c with thenamespaces changed. It has the intended effect in superficial testing.I do not know much detail about how these namespaces are used, but passingthem through to the server, which can decide whether to handle them or not,seems reasonable.I want to support a use case where an ext4 file system is mounted via 9P,then re-exported via samba to windows clients in a cluster. Windows wantsto store xattrs such as security.NTACL. This works when ext4 directlybacks samba, but not when 9P is inserted. This use case is documented here: http://code.google.com/p/diod/issues/detail?id=95Signed-off-by: Jim Garlick Signed-off-by: Eric Van Hensbergen List of files: /linux-6.15/fs/9p/Kconfig

c9041975 - fs/9p: remove depends on CONFIG_EXPERIMENTAL

Thu, 17 Jan 2013 02:54:02 +0000

fs/9p: remove depends on CONFIG_EXPERIMENTALThe CONFIG_EXPERIMENTAL config item has not carried much meaning for awhile now and is almost always enabled by default. As agreed during theLinux kernel summit, remove it from any "depends on" lines in Kconfigs.CC: Eric Van Hensbergen CC: Ron Minnich CC: Latchesar Ionkov Cc: Al Viro Signed-off-by: Kees Cook Signed-off-by: Greg Kroah-Hartman List of files: /linux-6.15/fs/9p/Kconfig

87211cd8 - 9p: remove experimental tag from tested configurations

Mon, 16 May 2011 15:46:39 +0000

9p: remove experimental tag from tested configurationsThe 9p client is currently undergoing regular regresssion andstress testing as a by-product of the virtfs work. I think itsfinally time to take off the experimental tags from the well-testedcode paths.Signed-off-by: Eric Van Hensbergen List of files: /linux-6.15/fs/9p/Kconfig

255614c4 - fs/9p: fix menu presentation

Sun, 02 Jan 2011 06:15:54 +0000

fs/9p: fix menu presentationMake the 9P_FS kconfig options subordinate to the 9P_FS kconfig symbolin the menu presentation instead of them all being at the same level.Signed-off-by: Randy Dunlap Signed-off-by: Eric Van Hensbergen List of files: /linux-6.15/fs/9p/Kconfig

85ff872d - fs/9p: Implement POSIX ACL permission checking function

Mon, 27 Sep 2010 18:57:39 +0000

fs/9p: Implement POSIX ACL permission checking functionThe ACL value is fetched as a part of inode initializationfrom the server and the permission checking function use thecached value of the ACLSigned-off-by: Aneesh Kumar K.V Signed-off-by: Venkateswararao Jujjuri Signed-off-by: Eric Van Hensbergen List of files: /linux-6.15/fs/9p/Kconfig

60e78d2c - 9p: Add fscache support to 9p

Wed, 23 Sep 2009 18:00:27 +0000

9p: Add fscache support to 9pThis patch adds a persistent, read-only caching facility for9p clients using the FS-Cache caching backend.When the fscache facility is enabled, each inode is associatedwith a corresponding vcookie which is an index into the FS-Cacheindexing tree. The FS-Cache indexing tree is indexed at 3 levels:- session object associated with each mount.- inode/vcookie- actual data (pages)A cache tag is chosen randomly for each session. These tags canbe read off /sys/fs/9p/caches and can be passed as a mount-timeparameter to re-attach to the specified caching session.Signed-off-by: Abhishek Kulkarni Signed-off-by: Eric Van Hensbergen List of files: /linux-6.15/fs/9p/Kconfig

0fcb4408 - fs/Kconfig: move 9p out

Thu, 22 Jan 2009 08:16:42 +0000

fs/Kconfig: move 9p outSigned-off-by: Alexey Dobriyan List of files: /linux-6.15/fs/9p/Kconfig