lwn.git/fs/nfs/write.c, branch v6.6-rc3

NFS: Use the correct commit info in nfs_join_page_group()

2023-09-13T15:51:11+00:00

Ensure that nfs_clear_request_commit() updates the correct counters when it removes them from the commit list. Fixes: ed5d588fe47f ("NFS: Try to join page groups before an O_DIRECT retransmission") Signed-off-by: Trond Myklebust Signed-off-by: Anna Schumaker

Merge tag 'mm-stable-2023-02-20-13-37' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

2023-02-24T01:09:35+00:00

Pull MM updates from Andrew Morton: - Daniel Verkamp has contributed a memfd series ("mm/memfd: add F_SEAL_EXEC") which permits the setting of the memfd execute bit at memfd creation time, with the option of sealing the state of the X bit. - Peter Xu adds a patch series ("mm/hugetlb: Make huge_pte_offset() thread-safe for pmd unshare") which addresses a rare race condition related to PMD unsharing. - Several folioification patch serieses from Matthew Wilcox, Vishal Moola, Sidhartha Kumar and Lorenzo Stoakes - Johannes Weiner has a series ("mm: push down lock_page_memcg()") which does perform some memcg maintenance and cleanup work. - SeongJae Park has added DAMOS filtering to DAMON, with the series "mm/damon/core: implement damos filter". These filters provide users with finer-grained control over DAMOS's actions. SeongJae has also done some DAMON cleanup work. - Kairui Song adds a series ("Clean up and fixes for swap"). - Vernon Yang contributed the series "Clean up and refinement for maple tree". - Yu Zhao has contributed the "mm: multi-gen LRU: memcg LRU" series. It adds to MGLRU an LRU of memcgs, to improve the scalability of global reclaim. - David Hildenbrand has added some userfaultfd cleanup work in the series "mm: uffd-wp + change_protection() cleanups". - Christoph Hellwig has removed the generic_writepages() library function in the series "remove generic_writepages". - Baolin Wang has performed some maintenance on the compaction code in his series "Some small improvements for compaction". - Sidhartha Kumar is doing some maintenance work on struct page in his series "Get rid of tail page fields". - David Hildenbrand contributed some cleanup, bugfixing and generalization of pte management and of pte debugging in his series "mm: support __HAVE_ARCH_PTE_SWP_EXCLUSIVE on all architectures with swap PTEs". - Mel Gorman and Neil Brown have removed the __GFP_ATOMIC allocation flag in the series "Discard __GFP_ATOMIC". - Sergey Senozhatsky has improved zsmalloc's memory utilization with his series "zsmalloc: make zspage chain size configurable". - Joey Gouly has added prctl() support for prohibiting the creation of writeable+executable mappings. The previous BPF-based approach had shortcomings. See "mm: In-kernel support for memory-deny-write-execute (MDWE)". - Waiman Long did some kmemleak cleanup and bugfixing in the series "mm/kmemleak: Simplify kmemleak_cond_resched() & fix UAF". - T.J. Alumbaugh has contributed some MGLRU cleanup work in his series "mm: multi-gen LRU: improve". - Jiaqi Yan has provided some enhancements to our memory error statistics reporting, mainly by presenting the statistics on a per-node basis. See the series "Introduce per NUMA node memory error statistics". - Mel Gorman has a second and hopefully final shot at fixing a CPU-hog regression in compaction via his series "Fix excessive CPU usage during compaction". - Christoph Hellwig does some vmalloc maintenance work in the series "cleanup vfree and vunmap". - Christoph Hellwig has removed block_device_operations.rw_page() in ths series "remove ->rw_page". - We get some maple_tree improvements and cleanups in Liam Howlett's series "VMA tree type safety and remove __vma_adjust()". - Suren Baghdasaryan has done some work on the maintainability of our vm_flags handling in the series "introduce vm_flags modifier functions". - Some pagemap cleanup and generalization work in Mike Rapoport's series "mm, arch: add generic implementation of pfn_valid() for FLATMEM" and "fixups for generic implementation of pfn_valid()" - Baoquan He has done some work to make /proc/vmallocinfo and /proc/kcore better represent the real state of things in his series "mm/vmalloc.c: allow vread() to read out vm_map_ram areas". - Jason Gunthorpe rationalized the GUP system's interface to the rest of the kernel in the series "Simplify the external interface for GUP". - SeongJae Park wishes to migrate people from DAMON's debugfs interface over to its sysfs interface. To support this, we'll temporarily be printing warnings when people use the debugfs interface. See the series "mm/damon: deprecate DAMON debugfs interface". - Andrey Konovalov provided the accurately named "lib/stackdepot: fixes and clean-ups" series. - Huang Ying has provided a dramatic reduction in migration's TLB flush IPI rates with the series "migrate_pages(): batch TLB flushing". - Arnd Bergmann has some objtool fixups in "objtool warning fixes". * tag 'mm-stable-2023-02-20-13-37' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (505 commits) include/linux/migrate.h: remove unneeded externs mm/memory_hotplug: cleanup return value handing in do_migrate_range() mm/uffd: fix comment in handling pte markers mm: change to return bool for isolate_movable_page() mm: hugetlb: change to return bool for isolate_hugetlb() mm: change to return bool for isolate_lru_page() mm: change to return bool for folio_isolate_lru() objtool: add UACCESS exceptions for __tsan_volatile_read/write kmsan: disable ftrace in kmsan core code kasan: mark addr_has_metadata __always_inline mm: memcontrol: rename memcg_kmem_enabled() sh: initialize max_mapnr m68k/nommu: add missing definition of ARCH_PFN_OFFSET mm: percpu: fix incorrect size in pcpu_obj_full_size() maple_tree: reduce stack usage with gcc-9 and earlier mm: page_alloc: call panic() when memoryless node allocation fails mm: multi-gen LRU: avoid futile retries migrate_pages: move THP/hugetlb migration support check to simplify code migrate_pages: batch flushing TLB migrate_pages: share more code between _unmap and _move ...

Merge tag 'nfs-for-6.3-1' of git://git.linux-nfs.org/projects/anna/linux-nfs

2023-02-22T22:47:20+00:00

Pull NFS client updates from Anna Schumaker: "New Features: - Convert the read and write paths to use folios Bugfixes and Cleanups: - Fix tracepoint state manager flag printing - Fix disabling swap files - Fix NFSv4 client identifier sysfs path in the documentation - Don't clear NFS_CAP_COPY if server returns NFS4ERR_OFFLOAD_DENIED - Treat GETDEVICEINFO errors as a layout failure - Replace kmap_atomic() calls with kmap_local_page() - Constify sunrpc sysfs kobj_type structures" * tag 'nfs-for-6.3-1' of git://git.linux-nfs.org/projects/anna/linux-nfs: (25 commits) fs/nfs: Replace kmap_atomic() with kmap_local_page() in dir.c pNFS/filelayout: treat GETDEVICEINFO errors as layout failure Documentation: Fix sysfs path for the NFSv4 client identifier nfs42: do not fail with EIO if ssc returns NFS4ERR_OFFLOAD_DENIED NFS: fix disabling of swap SUNRPC: make kobj_type structures constant nfs4trace: fix state manager flag printing NFS: Remove unnecessary check in nfs_read_folio() NFS: Improve tracing of nfs_wb_folio() NFS: Enable tracing of nfs_invalidate_folio() and nfs_launder_folio() NFS: fix up nfs_release_folio() to try to release the page NFS: Clean up O_DIRECT request allocation NFS: Fix up nfs_vm_page_mkwrite() for folios NFS: Convert nfs_write_begin/end to use folios NFS: Remove unused function nfs_wb_page() NFS: Convert buffered writes to use folios NFS: Convert the function nfs_wb_page() to use folios NFS: Convert buffered reads to use folios NFS: Add a helper nfs_wb_folio() NFS: Convert the remaining pagelist helper functions to support folios ...

NFS: Improve tracing of nfs_wb_folio()

2023-02-14T19:22:33+00:00

Include info about which folio is being traced. Signed-off-by: Trond Myklebust Signed-off-by: Anna Schumaker

NFS: Remove unused function nfs_wb_page()

2023-02-14T19:22:32+00:00

Signed-off-by: Trond Myklebust Signed-off-by: Anna Schumaker

NFS: Convert buffered writes to use folios

2023-02-14T19:22:32+00:00

Mostly mechanical conversion of struct page and functions into struct folio equivalents. The lack of support for folios in write_cache_pages(), means we still only support order 0 folio allocations. However the rest of the writeback code should now be ready for order n > 0. Signed-off-by: Trond Myklebust Signed-off-by: Anna Schumaker

NFS: Convert the function nfs_wb_page() to use folios

2023-02-14T19:22:32+00:00

Convert to use the folio functions, but pass the struct page to nfs_writepage_locked() for now. Signed-off-by: Trond Myklebust Signed-off-by: Anna Schumaker

NFS: Add a helper nfs_wb_folio()

2023-02-14T19:22:32+00:00

...and use it in nfs_launder_folio(). Signed-off-by: Trond Myklebust Signed-off-by: Anna Schumaker

NFS: Add a helper to convert a struct nfs_page into an inode

2023-02-14T19:22:32+00:00

Replace all the open coded calls to page_file_mapping(req->wb_page)->host. Signed-off-by: Trond Myklebust Signed-off-by: Anna Schumaker

fs: convert writepage_t callback to pass a folio

2023-02-03T06:33:34+00:00

Patch series "Convert writepage_t to use a folio". More folioisation. I split out the mpage work from everything else because it completely dominated the patch, but some implementations I just converted outright. This patch (of 2): We always write back an entire folio, but that's currently passed as the head page. Convert all filesystems that use write_cache_pages() to expect a folio instead of a page. Link: https://lkml.kernel.org/r/20230126201255.1681189-1-willy@infradead.org Link: https://lkml.kernel.org/r/20230126201255.1681189-2-willy@infradead.org Signed-off-by: Matthew Wilcox (Oracle) Cc: Christoph Hellwig Signed-off-by: Andrew Morton