kernel.git/fs/nfs/super.c, branch linux-6.7.y

Merge tag 'nfs-for-6.7-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs

2023-11-08T21:39:16Z

Pull NFS client updates from Trond Myklebust: "Bugfixes: - SUNRPC: - re-probe the target RPC port after an ECONNRESET error - handle allocation errors from rpcb_call_async() - fix a use-after-free condition in rpc_pipefs - fix up various checks for timeouts - NFSv4.1: - Handle NFS4ERR_DELAY errors during session trunking - fix SP4_MACH_CRED protection for pnfs IO - NFSv4: - Ensure that we test all delegations when the server notifies us that it may have revoked some of them Features: - Allow knfsd processes to break out of NFS4ERR_DELAY loops when re-exporting NFSv4.x by setting appropriate values for the 'delay_retrans' module parameter - nfs: Convert nfs_symlink() to use a folio" * tag 'nfs-for-6.7-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs: nfs: Convert nfs_symlink() to use a folio SUNRPC: Fix RPC client cleaned up the freed pipefs dentries NFSv4.1: fix SP4_MACH_CRED protection for pnfs IO SUNRPC: Add an IS_ERR() check back to where it was NFSv4.1: fix handling NFS4ERR_DELAY when testing for session trunking nfs41: drop dependency between flexfiles layout driver and NFSv3 modules NFSv4: fairly test all delegations on a SEQ4_ revocation SUNRPC: SOFTCONN tasks should time out when on the sending list SUNRPC: Force close the socket when a hard error is reported SUNRPC: Don't skip timeout checks in call_connect_status() SUNRPC: ECONNRESET might require a rebind NFSv4/pnfs: Allow layoutget to return EAGAIN for softerr mounts NFSv4: Add a parameter to limit the number of retries after NFS4ERR_DELAY

Merge tag 'mm-stable-2023-11-01-14-33' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

2023-11-03T05:38:47Z

Pull MM updates from Andrew Morton: "Many singleton patches against the MM code. The patch series which are included in this merge do the following: - Kemeng Shi has contributed some compation maintenance work in the series 'Fixes and cleanups to compaction' - Joel Fernandes has a patchset ('Optimize mremap during mutual alignment within PMD') which fixes an obscure issue with mremap()'s pagetable handling during a subsequent exec(), based upon an implementation which Linus suggested - More DAMON/DAMOS maintenance and feature work from SeongJae Park i the following patch series: mm/damon: misc fixups for documents, comments and its tracepoint mm/damon: add a tracepoint for damos apply target regions mm/damon: provide pseudo-moving sum based access rate mm/damon: implement DAMOS apply intervals mm/damon/core-test: Fix memory leaks in core-test mm/damon/sysfs-schemes: Do DAMOS tried regions update for only one apply interval - In the series 'Do not try to access unaccepted memory' Adrian Hunter provides some fixups for the recently-added 'unaccepted memory' feature. To increase the feature's checking coverage. 'Plug a few gaps where RAM is exposed without checking if it is unaccepted memory' - In the series 'cleanups for lockless slab shrink' Qi Zheng has done some maintenance work which is preparation for the lockless slab shrinking code - Qi Zheng has redone the earlier (and reverted) attempt to make slab shrinking lockless in the series 'use refcount+RCU method to implement lockless slab shrink' - David Hildenbrand contributes some maintenance work for the rmap code in the series 'Anon rmap cleanups' - Kefeng Wang does more folio conversions and some maintenance work in the migration code. Series 'mm: migrate: more folio conversion and unification' - Matthew Wilcox has fixed an issue in the buffer_head code which was causing long stalls under some heavy memory/IO loads. Some cleanups were added on the way. Series 'Add and use bdev_getblk()' - In the series 'Use nth_page() in place of direct struct page manipulation' Zi Yan has fixed a potential issue with the direct manipulation of hugetlb page frames - In the series 'mm: hugetlb: Skip initialization of gigantic tail struct pages if freed by HVO' has improved our handling of gigantic pages in the hugetlb vmmemmep optimizaton code. This provides significant boot time improvements when significant amounts of gigantic pages are in use - Matthew Wilcox has sent the series 'Small hugetlb cleanups' - code rationalization and folio conversions in the hugetlb code - Yin Fengwei has improved mlock()'s handling of large folios in the series 'support large folio for mlock' - In the series 'Expose swapcache stat for memcg v1' Liu Shixin has added statistics for memcg v1 users which are available (and useful) under memcg v2 - Florent Revest has enhanced the MDWE (Memory-Deny-Write-Executable) prctl so that userspace may direct the kernel to not automatically propagate the denial to child processes. The series is named 'MDWE without inheritance' - Kefeng Wang has provided the series 'mm: convert numa balancing functions to use a folio' which does what it says - In the series 'mm/ksm: add fork-exec support for prctl' Stefan Roesch makes is possible for a process to propagate KSM treatment across exec() - Huang Ying has enhanced memory tiering's calculation of memory distances. This is used to permit the dax/kmem driver to use 'high bandwidth memory' in addition to Optane Data Center Persistent Memory Modules (DCPMM). The series is named 'memory tiering: calculate abstract distance based on ACPI HMAT' - In the series 'Smart scanning mode for KSM' Stefan Roesch has optimized KSM by teaching it to retain and use some historical information from previous scans - Yosry Ahmed has fixed some inconsistencies in memcg statistics in the series 'mm: memcg: fix tracking of pending stats updates values' - In the series 'Implement IOCTL to get and optionally clear info about PTEs' Peter Xu has added an ioctl to /proc//pagemap which permits us to atomically read-then-clear page softdirty state. This is mainly used by CRIU - Hugh Dickins contributed the series 'shmem,tmpfs: general maintenance', a bunch of relatively minor maintenance tweaks to this code - Matthew Wilcox has increased the use of the VMA lock over file-backed page faults in the series 'Handle more faults under the VMA lock'. Some rationalizations of the fault path became possible as a result - In the series 'mm/rmap: convert page_move_anon_rmap() to folio_move_anon_rmap()' David Hildenbrand has implemented some cleanups and folio conversions - In the series 'various improvements to the GUP interface' Lorenzo Stoakes has simplified and improved the GUP interface with an eye to providing groundwork for future improvements - Andrey Konovalov has sent along the series 'kasan: assorted fixes and improvements' which does those things - Some page allocator maintenance work from Kemeng Shi in the series 'Two minor cleanups to break_down_buddy_pages' - In thes series 'New selftest for mm' Breno Leitao has developed another MM self test which tickles a race we had between madvise() and page faults - In the series 'Add folio_end_read' Matthew Wilcox provides cleanups and an optimization to the core pagecache code - Nhat Pham has added memcg accounting for hugetlb memory in the series 'hugetlb memcg accounting' - Cleanups and rationalizations to the pagemap code from Lorenzo Stoakes, in the series 'Abstract vma_merge() and split_vma()' - Audra Mitchell has fixed issues in the procfs page_owner code's new timestamping feature which was causing some misbehaviours. In the series 'Fix page_owner's use of free timestamps' - Lorenzo Stoakes has fixed the handling of new mappings of sealed files in the series 'permit write-sealed memfd read-only shared mappings' - Mike Kravetz has optimized the hugetlb vmemmap optimization in the series 'Batch hugetlb vmemmap modification operations' - Some buffer_head folio conversions and cleanups from Matthew Wilcox in the series 'Finish the create_empty_buffers() transition' - As a page allocator performance optimization Huang Ying has added automatic tuning to the allocator's per-cpu-pages feature, in the series 'mm: PCP high auto-tuning' - Roman Gushchin has contributed the patchset 'mm: improve performance of accounted kernel memory allocations' which improves their performance by ~30% as measured by a micro-benchmark - folio conversions from Kefeng Wang in the series 'mm: convert page cpupid functions to folios' - Some kmemleak fixups in Liu Shixin's series 'Some bugfix about kmemleak' - Qi Zheng has improved our handling of memoryless nodes by keeping them off the allocation fallback list. This is done in the series 'handle memoryless nodes more appropriately' - khugepaged conversions from Vishal Moola in the series 'Some khugepaged folio conversions'" [ bcachefs conflicts with the dynamically allocated shrinkers have been resolved as per Stephen Rothwell in https://lore.kernel.org/all/20230913093553.4290421e@canb.auug.org.au/ with help from Qi Zheng. The clone3 test filtering conflict was half-arsed by yours truly ] * tag 'mm-stable-2023-11-01-14-33' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (406 commits) mm/damon/sysfs: update monitoring target regions for online input commit mm/damon/sysfs: remove requested targets when online-commit inputs selftests: add a sanity check for zswap Documentation: maple_tree: fix word spelling error mm/vmalloc: fix the unchecked dereference warning in vread_iter() zswap: export compression failure stats Documentation: ubsan: drop "the" from article title mempolicy: migration attempt to match interleave nodes mempolicy: mmap_lock is not needed while migrating folios mempolicy: alloc_pages_mpol() for NUMA policy without vma mm: add page_rmappable_folio() wrapper mempolicy: remove confusing MPOL_MF_LAZY dead code mempolicy: mpol_shared_policy_init() without pseudo-vma mempolicy trivia: use pgoff_t in shared mempolicy tree mempolicy trivia: slightly more consistent naming mempolicy trivia: delete those ancient pr_debug()s mempolicy: fix migrate_pages(2) syscall return nr_failed kernfs: drop shared NUMA mempolicy hooks hugetlbfs: drop shared NUMA mempolicy pretence mm/damon/sysfs-test: add a unit test for damon_sysfs_set_targets() ...

NFSv4: Add a parameter to limit the number of retries after NFS4ERR_DELAY

2023-10-22T23:47:56Z

When using a 'softerr' mount, the NFSv4 client can get stuck waiting forever while the server just returns NFS4ERR_DELAY. Among other things, this causes the knfsd server threads to busy wait. Add a parameter that tells the NFSv4 client how many times to retry before giving up. Signed-off-by: Trond Myklebust

fs: add a new SB_I_NOUMASK flag

2023-10-19T09:02:47Z

SB_POSIXACL must be set when a filesystem supports POSIX ACLs, but NFSv4 also sets this flag to prevent the VFS from applying the umask on newly-created files. NFSv4 doesn't support POSIX ACLs however, which causes confusion when other subsystems try to test for them. Add a new SB_I_NOUMASK flag that allows filesystems to opt-in to umask stripping without advertising support for POSIX ACLs. Set the new flag on NFSv4 instead of SB_POSIXACL. Also, move mode_strip_umask to namei.h and convert init_mknod and init_mkdir to use it. Signed-off-by: Jeff Layton Message-Id: <20230911-acl-fix-v3-1-b25315333f6c@kernel.org> Signed-off-by: Christian Brauner

nfs: dynamically allocate the nfs-acl shrinker

2023-10-04T17:32:24Z

Use new APIs to dynamically allocate the nfs-acl shrinker. Link: https://lkml.kernel.org/r/20230911094444.68966-12-zhengqi.arch@bytedance.com Signed-off-by: Qi Zheng Reviewed-by: Muchun Song Cc: Trond Myklebust Cc: Anna Schumaker Cc: Abhinav Kumar Cc: Alasdair Kergon Cc: Alexander Viro Cc: Alyssa Rosenzweig Cc: Andreas Dilger Cc: Andreas Gruenbacher Cc: Arnd Bergmann Cc: Bob Peterson Cc: Borislav Petkov Cc: Carlos Llamas Cc: Chandan Babu R Cc: Chao Yu Cc: Chris Mason Cc: Christian Brauner Cc: Christian Koenig Cc: Chuck Lever Cc: Coly Li Cc: Dai Ngo Cc: Daniel Vetter Cc: Daniel Vetter Cc: "Darrick J. Wong" Cc: Dave Chinner Cc: Dave Hansen Cc: David Airlie Cc: David Hildenbrand Cc: David Sterba Cc: Dmitry Baryshkov Cc: Gao Xiang Cc: Greg Kroah-Hartman Cc: Huang Rui Cc: Ingo Molnar Cc: Jaegeuk Kim Cc: Jani Nikula Cc: Jan Kara Cc: Jason Wang Cc: Jeff Layton Cc: Jeffle Xu Cc: Joel Fernandes (Google) Cc: Joonas Lahtinen Cc: Josef Bacik Cc: Juergen Gross Cc: Kent Overstreet Cc: Kirill Tkhai Cc: Marijn Suijten Cc: "Michael S. Tsirkin" Cc: Mike Snitzer Cc: Minchan Kim Cc: Muchun Song Cc: Nadav Amit Cc: Neil Brown Cc: Oleksandr Tyshchenko Cc: Olga Kornievskaia Cc: Paul E. McKenney Cc: Richard Weinberger Cc: Rob Clark Cc: Rob Herring Cc: Rodrigo Vivi Cc: Roman Gushchin Cc: Sean Paul Cc: Sergey Senozhatsky Cc: Song Liu Cc: Stefano Stabellini Cc: Steven Price Cc: "Theodore Ts'o" Cc: Thomas Gleixner Cc: Tomeu Vizoso Cc: Tom Talpey Cc: Tvrtko Ursulin Cc: Vlastimil Babka Cc: Xuan Zhuo Cc: Yue Hu Signed-off-by: Andrew Morton

NFS: switch back to using kill_anon_super

2023-08-31T10:47:16Z

NFS switch to open coding kill_anon_super in 7b14a213890a ("nfs: don't call bdi_unregister") to avoid the extra bdi_unregister call. At that point bdi_destroy was called in nfs_free_server and thus it required a later freeing of the anon dev_t. But since 0db10944a76b ("nfs: Convert to separately allocated bdi") the bdi has been free implicitly by the sb destruction, so this isn't needed anymore. By not open coding kill_anon_super, nfs now inherits the fix in dc3216b14160 ("super: ensure valid info"), and we remove the only open coded version of kill_anon_super. Signed-off-by: Christoph Hellwig Reviewed-by: Jan Kara Message-Id: <20230831052940.256193-1-hch@lst.de> Signed-off-by: Christian Brauner

NFS: add superblock sysfs entries

2023-06-19T19:03:48Z

Create a sysfs directory for each mount that corresponds to the mount's nfs_server struct. As the mount is being constructed, use the name "server-n", but rename it to the "MAJOR:MINOR" of the mount after assigning a device_id. The rename approach allows us to populate the mount's directory with links to the various rpc_client objects during the mount's construction. The naming convention (MAJOR:MINOR) can be used to reference a particular NFS mount's sysfs tree. Signed-off-by: Benjamin Coddington Signed-off-by: Trond Myklebust

NFS: Add an "xprtsec=" NFS mount option

2023-06-19T16:30:17Z

After some discussion, we decided that controlling transport layer security policy should be separate from the setting for the user authentication flavor. To accomplish this, add a new NFS mount option to select a transport layer security policy for RPC operations associated with the mount point. xprtsec=none - Transport layer security is forced off. xprtsec=tls - Establish an encryption-only TLS session. If the initial handshake fails, the mount fails. If TLS is not available on a reconnect, drop the connection and try again. xprtsec=mtls - Both sides authenticate and an encrypted session is created. If the initial handshake fails, the mount fails. If TLS is not available on a reconnect, drop the connection and try again. To support client peer authentication (mtls), the handshake daemon will have configurable default authentication material (certificate or pre-shared key). In the future, mount options can be added that can provide this material on a per-mount basis. Updates to mount.nfs (to support xprtsec=auto) and nfs(5) will be sent under separate cover. Signed-off-by: Chuck Lever Signed-off-by: Trond Myklebust

Merge tag 'nfs-for-6.4-1' of git://git.linux-nfs.org/projects/anna/linux-nfs

2023-04-29T17:58:44Z

Pull NFS client updates from Anna Schumaker: "New Features: - Convert the readdir path to use folios - Convert the NFS fscache code to use netfs Bugfixes and Cleanups: - Always send a RECLAIM_COMPLETE after establishing a lease - Simplify sysctl registrations and other cleanups - Handle out-of-order write replies on NFS v3 - Have sunrpc call_bind_status use standard hard/soft task semantics - Other minor cleanups" * tag 'nfs-for-6.4-1' of git://git.linux-nfs.org/projects/anna/linux-nfs: NFSv4.2: Rework scratch handling for READ_PLUS NFS: Cleanup unused rpc_clnt variable NFS: set varaiable nfs_netfs_debug_id storage-class-specifier to static SUNRPC: remove the maximum number of retries in call_bind_status NFS: Convert readdir page array functions to use a folio NFS: Convert the readdir array-of-pages into an array-of-folios NFSv3: handle out-of-order write replies. NFS: Remove fscache specific trace points and NFS_INO_FSCACHE bit NFS: Remove all NFSIOS_FSCACHE counters due to conversion to netfs API NFS: Convert buffered read paths to use netfs when fscache is enabled NFS: Configure support for netfs when NFS fscache is configured NFS: Rename readpage_async_filler to nfs_read_add_folio sunrpc: simplify one-level sysctl registration for debug_table sunrpc: move sunrpc_table and proc routines above sunrpc: simplify one-level sysctl registration for xs_tunables_table sunrpc: simplify one-level sysctl registration for xr_tunables_table nfs: simplify two-level sysctl registration for nfs_cb_sysctls nfs: simplify two-level sysctl registration for nfs4_cb_sysctls lockd: simplify two-level sysctl registration for nlm_sysctls NFSv4.1: Always send a RECLAIM_COMPLETE after establishing lease

NFS: Remove all NFSIOS_FSCACHE counters due to conversion to netfs API

2023-04-11T17:08:26Z

The old NFSIOS_FSCACHE counters are no longer accurate or useful with the conversion to the new netfs API. The new API does not have a page based interface, and so the counters in nfs_stat_fscachecounters are no longer obtainable. The new netfs the API has extensive statistics inside /proc/fs/fscache/stats so we no longer need NFS specific fscache stats. Note this also removes the 'fsc:' line from /proc/self/mountstats so it will be a user-visible change. Signed-off-by: Dave Wysochanski Reviewed-by: Jeff Layton Tested-by: Daire Byrne Signed-off-by: Anna Schumaker