Changes in Makefile

70ba381e - nfs: add LOCALIO support

Thu, 05 Sep 2024 19:09:53 +0000

nfs: add LOCALIO supportAdd client support for bypassing NFS for localhost reads, writes, andcommits. This is only useful when the client and the server arerunning on the same host.nfs_local_probe() is stubbed out, later commits will enable client andserver handshake via a Linux-only LOCALIO auxiliary RPC protocol.This has dynamic binding with the nfsd module (via nfs_localio modulewhich is part of nfs_common). LOCALIO will only work if nfsd isalready loaded.The "localio_enabled" nfs kernel module parameter can be used todisable and enable the ability to use LOCALIO support.CONFIG_NFS_LOCALIO enables NFS client support for LOCALIO.Lastly, LOCALIO uses an nfsd_file to initiate all IO. To make properuse of nfsd_file (and nfsd's filecache) its lifetime (duration beforenfsd_file_put is called) must extend until after commit, read andwrite operations. So rather than immediately drop the nfsd_filereference in nfs_local_open_fh(), that doesn't happen untilnfs_local_pgio_release() for read/write and not untilnfs_local_release_commit_data() for commit. The same applies to thereference held on nfsd's nn->nfsd_serv. Both objects' lifetimes andassociated references are managed through calls tonfs_to->nfsd_file_put_local().Signed-off-by: Weston Andros Adamson Signed-off-by: Trond Myklebust Co-developed-by: Mike Snitzer Signed-off-by: Mike Snitzer Signed-off-by: NeilBrown # nfs_open_local_fhReviewed-by: Jeff Layton Signed-off-by: Anna Schumaker List of files: /linux-6.15/fs/nfs/Makefile

a6b5a28e - nfs: Convert to new fscache volume/cookie API

Sat, 14 Nov 2020 18:43:54 +0000

nfs: Convert to new fscache volume/cookie APIChange the nfs filesystem to support fscache's indexing rewrite andreenable caching in nfs.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 nfs, I've made it render the volume name string as: "nfs,,,

,,,*<,param>[,]" (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) fscache_enable/disable_cookie() have been removed. Call fscache_use_cookie() and fscache_unuse_cookie() when a file is opened or closed to prevent a cache file from being culled and to keep resources to hand that are needed to do I/O. If a file is opened for writing, we invalidate it with FSCACHE_INVAL_DIO_WRITE in lieu of doing writeback to the cache, thereby making it cease caching until all currently open files are closed. This should give the same behaviour as the uptream code. Making the cache store local modifications isn't straightforward for NFS, so that's left for future patches. (5) fscache_invalidate() now needs to be given uptodate auxiliary data and a file size. It also takes a flag to indicate if this was due to a DIO write. (6) Call nfs_fscache_invalidate() with FSCACHE_INVAL_DIO_WRITE on a file to which a DIO write is made. (7) Call fscache_note_page_release() from nfs_release_page(). (8) Use a killable wait in nfs_vm_page_mkwrite() when waiting for PG_fscache to be cleared. (9) The functions to read and write data to/from the cache are stubbed out pending a conversion to use netfslib.Changes=======ver #3: - Added missing =n fallback for nfs_fscache_release_file()[1][2].ver #2: - Use gfpflags_allow_blocking() rather than using flag directly. - fscache_acquire_volume() now returns errors. - Remove NFS_INO_FSCACHE as it's no longer used. - Need to unuse a cookie on file-release, not inode-clear.Signed-off-by: Dave Wysochanski Co-developed-by: David Howells Signed-off-by: David Howells Tested-by: Dave Wysochanski Acked-by: Jeff Layton cc: Trond Myklebust cc: Anna Schumaker cc: linux-nfs@vger.kernel.orgcc: linux-cachefs@redhat.comLink: https://lore.kernel.org/r/202112100804.nksO8K4u-lkp@intel.com/ [1]Link: https://lore.kernel.org/r/202112100957.2oEDT20W-lkp@intel.com/ [2]Link: https://lore.kernel.org/r/163819668938.215744.14448852181937731615.stgit@warthog.procyon.org.uk/ # v1Link: https://lore.kernel.org/r/163906979003.143852.2601189243864854724.stgit@warthog.procyon.org.uk/ # v2Link: https://lore.kernel.org/r/163967182112.1823006.7791504655391213379.stgit@warthog.procyon.org.uk/ # v3Link: https://lore.kernel.org/r/164021575950.640689.12069642327533368467.stgit@warthog.procyon.org.uk/ # v4 List of files: /linux-6.15/fs/nfs/Makefile

95ad37f9 - NFSv4.2: add client side xattr caching.

Tue, 23 Jun 2020 22:39:04 +0000

NFSv4.2: add client side xattr caching.Implement client side caching for NFSv4.2 extended attributes. The cacheis a per-inode hashtable, with name/value entries. There is one specialentry for the listxattr cache.NFS inodes have a pointer to a cache structure. The cache structure isallocated on demand, freed when the cache is invalidated.Memory shrinkers keep the size in check. Large entries (> PAGE_SIZE)are collected by a separate shrinker, and freed more aggressivelythan others.Signed-off-by: Frank van der Linden Signed-off-by: Trond Myklebust List of files: /linux-6.15/fs/nfs/Makefile

9954bf92 - NFS: Move mount parameterisation bits into their own file

Tue, 10 Dec 2019 12:31:04 +0000

NFS: Move mount parameterisation bits into their own fileSplit various bits relating to mount parameterisation out fromfs/nfs/super.c into their own file to form the basis of filesystem contexthandling for NFS.No other changes are made to the code beyond removing 'static' qualifiers.Signed-off-by: David Howells Signed-off-by: Al Viro Signed-off-by: Anna Schumaker List of files: /linux-6.15/fs/nfs/Makefile

996bc4f4 - NFS: Create a root NFS directory in /sys/fs/nfs

Thu, 24 Jan 2019 21:10:46 +0000

NFS: Create a root NFS directory in /sys/fs/nfsSigned-off-by: Trond Myklebust List of files: /linux-6.15/fs/nfs/Makefile

b2441318 - License cleanup: add SPDX GPL-2.0 license identifier to files with no license

Wed, 01 Nov 2017 14:07:57 +0000

License cleanup: add SPDX GPL-2.0 license identifier to files with no licenseMany source files in the tree are missing licensing information, whichmakes it harder for compliance tools to determine the correct license.By default all files without license information are under the defaultlicense of the kernel, which is GPL version 2.Update the files which contain no license information with the 'GPL-2.0'SPDX license identifier. The SPDX identifier is a legally bindingshorthand, which can be used instead of the full boiler plate text.This patch is based on work done by Thomas Gleixner and Kate Stewart andPhilippe Ombredanne.How this work was done:Patches were generated and checked against linux-4.14-rc6 for a subset ofthe use cases: - file had no licensing information it it. - file was a */uapi/* one with no licensing information in it, - file was a */uapi/* one with existing licensing information,Further patches will be generated in subsequent months to fix up caseswhere non-standard license headers were used, and references to licensehad to be inferred by heuristics based on keywords.The analysis to determine which SPDX License Identifier to be applied toa file was done in a spreadsheet of side by side results from of theoutput of two independent scanners (ScanCode & Windriver) producing SPDXtag:value files created by Philippe Ombredanne. Philippe prepared thebase worksheet, and did an initial spot review of a few 1000 files.The 4.13 kernel was the starting point of the analysis with 60,537 filesassessed. Kate Stewart did a file by file comparison of the scannerresults in the spreadsheet to determine which SPDX license identifier(s)to be applied to the file. She confirmed any determination that was notimmediately clear with lawyers working with the Linux Foundation.Criteria used to select files for SPDX license identifier tagging was: - Files considered eligible had to be source code files. - Make and config files were included as candidates if they contained >5 lines of source - File already had some variant of a license header in it (even if <5 lines).All documentation files were explicitly excluded.The following heuristics were used to determine which SPDX licenseidentifiers to apply. - when both scanners couldn't find any license traces, file was considered to have no license information in it, and the top level COPYING file license applied. For non */uapi/* files that summary was: SPDX license identifier # files ---------------------------------------------------|------- GPL-2.0 11139 and resulted in the first patch in this series. If that file was a */uapi/* path one, it was "GPL-2.0 WITH Linux-syscall-note" otherwise it was "GPL-2.0". Results of that was: SPDX license identifier # files ---------------------------------------------------|------- GPL-2.0 WITH Linux-syscall-note 930 and resulted in the second patch in this series. - if a file had some form of licensing information in it, and was one of the */uapi/* ones, it was denoted with the Linux-syscall-note if any GPL family license was found in the file or had no licensing in it (per prior point). Results summary: SPDX license identifier # files ---------------------------------------------------|------ GPL-2.0 WITH Linux-syscall-note 270 GPL-2.0+ WITH Linux-syscall-note 169 ((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause) 21 ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause) 17 LGPL-2.1+ WITH Linux-syscall-note 15 GPL-1.0+ WITH Linux-syscall-note 14 ((GPL-2.0+ WITH Linux-syscall-note) OR BSD-3-Clause) 5 LGPL-2.0+ WITH Linux-syscall-note 4 LGPL-2.1 WITH Linux-syscall-note 3 ((GPL-2.0 WITH Linux-syscall-note) OR MIT) 3 ((GPL-2.0 WITH Linux-syscall-note) AND MIT) 1 and that resulted in the third patch in this series. - when the two scanners agreed on the detected license(s), that became the concluded license(s). - when there was disagreement between the two scanners (one detected a license but the other didn't, or they both detected different licenses) a manual inspection of the file occurred. - In most cases a manual inspection of the information in the file resulted in a clear resolution of the license that should apply (and which scanner probably needed to revisit its heuristics). - When it was not immediately clear, the license identifier was confirmed with lawyers working with the Linux Foundation. - If there was any question as to the appropriate license identifier, the file was flagged for further research and to be revisited later in time.In total, over 70 hours of logged manual review was done on thespreadsheet to determine the SPDX license identifiers to apply to thesource files by Kate, Philippe, Thomas and, in some cases, confirmationby lawyers working with the Linux Foundation.Kate also obtained a third independent scan of the 4.13 code base fromFOSSology, and compared selected files where the other two scannersdisagreed against that SPDX file, to see if there was new insights. TheWindriver scanner is based on an older version of FOSSology in part, sothey are related.Thomas did random spot checks in about 500 files from the spreadsheetsfor the uapi headers and agreed with SPDX license identifier in thefiles he inspected. For the non-uapi files Thomas did random spot checksin about 15000 files.In initial set of patches against 4.14-rc6, 3 files were found to havecopy/paste license identifier errors, and have been fixed to reflect thecorrect identifier.Additionally Philippe spent 10 hours this week doing a detailed manualinspection and review of the 12,461 patched files from the initial patchversion early this week with: - a full scancode scan run, collecting the matched texts, detected license ids and scores - reviewing anything where there was a license detected (about 500+ files) to ensure that the applied SPDX license was correct - reviewing anything where there was no detection but the patch license was not GPL-2.0 WITH Linux-syscall-note to ensure that the applied SPDX license was correctThis produced a worksheet with 20 files needing minor correction. Thisworksheet was then exported into 3 different .csv files for thedifferent types of files to be modified.These .csv files were then reviewed by Greg. Thomas wrote a script toparse the csv files and add the proper SPDX tag to the file, in theformat that the file expected. This script was further refined by Gregbased on the output to detect more types of files automatically and todistinguish between header and source .c files (which need differentcomment types.) Finally Greg ran the script using the .csv files togenerate the patches.Reviewed-by: Kate Stewart Reviewed-by: Philippe Ombredanne Reviewed-by: Thomas Gleixner Signed-off-by: Greg Kroah-Hartman List of files: /linux-6.15/fs/nfs/Makefile

00422483 - nfs: add export operations

Thu, 29 Jun 2017 13:34:53 +0000

nfs: add export operationsThis support for opening files on NFS by file handle, both through theopen_by_handle syscall, and for re-exporting NFS (for example using adifferent version). The support is very basic for now, as each open byhandle will have to do an NFSv4 open operation on the wire. In thefuture this will hopefully be mitigated by an open file cache, as wellas various optimizations in NFS for this specific case.Signed-off-by: Peng Tao [hch: incorporated various changes, resplit the patches, new changelog]Signed-off-by: Christoph Hellwig List of files: /linux-6.15/fs/nfs/Makefile

20fa1902 - nfs: add export operations

Thu, 29 Jun 2017 13:34:53 +0000

6d22323b - nfs: remove the objlayout driver

Wed, 12 Apr 2017 16:01:08 +0000

nfs: remove the objlayout driverThe objlayout code has been in the tree, but it's been unmaintained andno server product for it actually ever shipped.Signed-off-by: Christoph Hellwig Signed-off-by: Trond Myklebust List of files: /linux-6.15/fs/nfs/Makefile

a5864c99 - NFS: Do not serialise O_DIRECT reads and writes

Fri, 03 Jun 2016 21:07:19 +0000

NFS: Do not serialise O_DIRECT reads and writesAllow dio requests to be scheduled in parallel, but ensuring that theydo not conflict with buffered I/O.Signed-off-by: Trond Myklebust List of files: /linux-6.15/fs/nfs/Makefile

7b320382 - NFS: Rename idmap.c to nfs4idmap.c

Wed, 15 Apr 2015 17:00:06 +0000

NFS: Rename idmap.c to nfs4idmap.cI added the nfs4 prefix to make it obvious that this file is built intothe NFS v4 module, and not the generic client.Signed-off-by: Anna Schumaker Signed-off-by: Trond Myklebust List of files: /linux-6.15/fs/nfs/Makefile

d67ae825 - pnfs/flexfiles: Add the FlexFile Layout Driver

Thu, 11 Dec 2014 22:02:04 +0000

pnfs/flexfiles: Add the FlexFile Layout DriverThe flexfile layout is a new layout that extends thefile layout. It is currently being drafted as a specification athttps://datatracker.ietf.org/doc/draft-ietf-nfsv4-layout-types/Signed-off-by: Weston Andros Adamson Signed-off-by: Tom Haynes Signed-off-by: Tao Peng List of files: /linux-6.15/fs/nfs/Makefile

f54bcf2e - pnfs: Prepare for flexfiles by pulling out common code

Thu, 11 Dec 2014 20:34:59 +0000

pnfs: Prepare for flexfiles by pulling out common codeThe flexfilelayout driver will share some common codewith the filelayout driver. This set of changes refactorsthat common code out to avoid any module depenencies.Signed-off-by: Tom Haynes List of files: /linux-6.15/fs/nfs/Makefile

1c6dcbe5 - NFS: Implement SEEK

Fri, 26 Sep 2014 17:58:48 +0000

NFS: Implement SEEKThe SEEK operation is used when an application makes an lseek call witheither the SEEK_HOLE or SEEK_DATA flags set. I fall back onnfs_file_llseek() if the server does not have SEEK support.Signed-off-by: Anna Schumaker Signed-off-by: Trond Myklebust List of files: /linux-6.15/fs/nfs/Makefile

b5968725 - Push the file layout driver into a subdirectory

Mon, 12 May 2014 21:35:52 +0000

Push the file layout driver into a subdirectoryThe object and block layouts already exist in their ownsubdirectories. This patch completes the set!Note that as a layout denotes nfs4 already, I strippedthat prefix out of the file names.Signed-off-by: Tom Haynes Acked-by: Jeff Layton Signed-off-by: Trond Myklebust List of files: /linux-6.15/fs/nfs/Makefile

9d33059c - NFS: Enable slot table helpers for NFSv4.0

Fri, 09 Aug 2013 16:48:44 +0000

NFS: Enable slot table helpers for NFSv4.0I'd like to re-use NFSv4.1's slot table machinery for NFSv4.0transport blocking. Re-organize some of nfs4session.c so the slottable code is built even when NFS_V4_1 is disabled.Signed-off-by: Chuck Lever Signed-off-by: Trond Myklebust List of files: /linux-6.15/fs/nfs/Makefile

c6d01c6f - NFSv4: Add tracepoints for debugging state management problems

Fri, 09 Aug 2013 15:51:26 +0000

NFSv4: Add tracepoints for debugging state management problemsSet up basic tracepoints for debugging client id creation/destructionand session creation/destruction.Signed-off-by: Trond Myklebust List of files: /linux-6.15/fs/nfs/Makefile

f4ce1299 - NFS: Add event tracing for generic NFS events

Mon, 19 Aug 2013 22:59:33 +0000

NFS: Add event tracing for generic NFS eventsAdd tracepoints for inode attribute updates, attribute revalidation,writeback start/end fsync start/end, attribute change start/end,permission check start/end.The intention is to enable performance tracing using 'perf'as well asimproving debugging.Signed-off-by: Trond Myklebust List of files: /linux-6.15/fs/nfs/Makefile

c8d74d9b - NFSv4: Move the DNS resolver into the NFSv4 module

Sat, 01 Jun 2013 15:50:58 +0000

NFSv4: Move the DNS resolver into the NFSv4 moduleThe other protocols don't use it, so make it local to NFSv4, andremove the EXPORT.Also ensure that we only compile in cache_lib.o if we're usingthe legacy DNS resolver.Signed-off-by: Trond Myklebust Cc: Bryan Schumaker List of files: /linux-6.15/fs/nfs/Makefile

73e39aaa - NFSv4.1: Cleanup move session slot management to fs/nfs/nfs4session.c

Mon, 26 Nov 2012 17:49:34 +0000

NFSv4.1: Cleanup move session slot management to fs/nfs/nfs4session.cNFSv4.1 session management is getting complex enough to deservea separate file.Signed-off-by: Trond Myklebust List of files: /linux-6.15/fs/nfs/Makefile