kernel/linux.git/fs/affs, branch master

Merge tag 'pull-dcache-busy-wait' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

2026-04-21T14:30:44+00:00

Pull dcache busy loop updates from Al Viro: "Fix livelocks in shrink_dcache_tree() If shrink_dcache_tree() finds a dentry in the middle of being killed by another thread, it has to wait until the victim finishes dying, gets detached from the tree and ceases to pin its parent. The way we used to deal with that amounted to busy-wait; unfortunately, it's not just inefficient but can lead to reliably reproducible hard livelocks. Solved by having shrink_dentry_tree() attach a completion to such dentry, with dentry_unlist() calling complete() on all objects attached to it. With a bit of care it can be done without growing struct dentry or adding overhead in normal case" * tag 'pull-dcache-busy-wait' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: get rid of busy-waiting in shrink_dcache_tree() dcache.c: more idiomatic "positives are not allowed" sanity checks struct dentry: make ->d_u anonymous for_each_alias(): helper macro for iterating through dentries of given inode

Merge tag 'affs-for-7.1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux

2026-04-13T23:39:01+00:00

Pull AFFS fix from David Sterba: "There's a potential out-of-bounds read in the directory hash table during readdir" * tag 'affs-for-7.1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux: affs: bound hash_pos before table lookup in affs_readdir

Merge tag 'vfs-7.1-rc1.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs

2026-04-13T21:20:11+00:00

Pull misc vfs updates from Christian Brauner: "Features: - coredump: add tracepoint for coredump events - fs: hide file and bfile caches behind runtime const machinery Fixes: - fix architecture-specific compat_ftruncate64 implementations - dcache: Limit the minimal number of bucket to two - fs/omfs: reject s_sys_blocksize smaller than OMFS_DIR_START - fs/mbcache: cancel shrink work before destroying the cache - dcache: permit dynamic_dname()s up to NAME_MAX Cleanups: - remove or unexport unused fs_context infrastructure - trivial ->setattr cleanups - selftests/filesystems: Assume that TIOCGPTPEER is defined - writeback: fix kernel-doc function name mismatch for wb_put_many() - autofs: replace manual symlink buffer allocation in autofs_dir_symlink - init/initramfs.c: trivial fix: FSM -> Finite-state machine - fs: remove stale and duplicate forward declarations - readdir: Introduce dirent_size() - fs: Replace user_access_{begin/end} by scoped user access - kernel: acct: fix duplicate word in comment - fs: write a better comment in step_into() concerning .mnt assignment - fs: attr: fix comment formatting and spelling issues" * tag 'vfs-7.1-rc1.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs: (28 commits) dcache: permit dynamic_dname()s up to NAME_MAX fs: attr: fix comment formatting and spelling issues fs: hide file and bfile caches behind runtime const machinery fs: write a better comment in step_into() concerning .mnt assignment proc: rename proc_notify_change to proc_setattr proc: rename proc_setattr to proc_nochmod_setattr affs: rename affs_notify_change to affs_setattr adfs: rename adfs_notify_change to adfs_setattr hfs: update comments on hfs_inode_setattr kernel: acct: fix duplicate word in comment fs: Replace user_access_{begin/end} by scoped user access readdir: Introduce dirent_size() coredump: add tracepoint for coredump events fs: remove do_sys_truncate fs: pass on FTRUNCATE_* flags to do_truncate fs: fix archiecture-specific compat_ftruncate64 fs: remove stale and duplicate forward declarations init/initramfs.c: trivial fix: FSM -> Finite-state machine autofs: replace manual symlink buffer allocation in autofs_dir_symlink fs/mbcache: cancel shrink work before destroying the cache ...

Merge tag 'vfs-7.1-rc1.bh.metadata' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs

2026-04-13T19:46:42+00:00

Pull vfs buffer_head updates from Christian Brauner: "This cleans up the mess that has accumulated over the years in metadata buffer_head tracking for inodes. It moves the tracking into dedicated structure in filesystem-private part of the inode (so that we don't use private_list, private_data, and private_lock in struct address_space), and also moves couple other users of private_data and private_list so these are removed from struct address_space saving 3 longs in struct inode for 99% of inodes" * tag 'vfs-7.1-rc1.bh.metadata' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs: (42 commits) fs: Drop i_private_list from address_space fs: Drop mapping_metadata_bhs from address space ext4: Track metadata bhs in fs-private inode part minix: Track metadata bhs in fs-private inode part udf: Track metadata bhs in fs-private inode part fat: Track metadata bhs in fs-private inode part bfs: Track metadata bhs in fs-private inode part affs: Track metadata bhs in fs-private inode part ext2: Track metadata bhs in fs-private inode part fs: Provide functions for handling mapping_metadata_bhs directly fs: Switch inode_has_buffers() to take mapping_metadata_bhs fs: Make bhs point to mapping_metadata_bhs fs: Move metadata bhs tracking to a separate struct fs: Fold fsync_buffers_list() into sync_mapping_buffers() fs: Drop osync_buffers_list() kvm: Use private inode list instead of i_private_list fs: Remove i_private_data aio: Stop using i_private_data and i_private_lock hugetlbfs: Stop using i_private_data fs: Stop using i_private_data for metadata bh tracking ...

affs: bound hash_pos before table lookup in affs_readdir

2026-04-10T00:51:05+00:00

affs_readdir() decodes ctx->pos into hash_pos and chain_pos and then dereferences AFFS_HEAD(dir_bh)->table[hash_pos] before validating that hash_pos is within the runtime table bound. Treat out-of-range positions as end-of-directory before the first table lookup. Signed-off-by: Hyungjung Joo Reviewed-by: David Sterba Signed-off-by: David Sterba

for_each_alias(): helper macro for iterating through dentries of given inode

2026-04-02T07:45:02+00:00

Most of the places using d_alias are loops iterating through all aliases for given inode; introduce a helper macro (for_each_alias(dentry, inode)) and convert open-coded instances of such loop to it. They are easier to read that way and it reduces the noise on the next steps. You _must_ hold inode->i_lock over that thing. Signed-off-by: Al Viro

affs: rename affs_notify_change to affs_setattr

2026-03-26T14:16:54+00:00

Make the function name match the method that it implements. Signed-off-by: Christoph Hellwig Link: https://patch.msgid.link/20260325063711.3298685-4-hch@lst.de Reviewed-by: Jan Kara Signed-off-by: Christian Brauner

affs: Track metadata bhs in fs-private inode part

2026-03-26T14:03:31+00:00

Track metadata bhs for an inode in fs-private part of the inode. Signed-off-by: Jan Kara Link: https://patch.msgid.link/20260326095354.16340-77-jack@suse.cz Signed-off-by: Christian Brauner

affs: Sync and invalidate metadata buffers from affs_evict_inode()

2026-03-26T14:03:29+00:00

There are only very few filesystems using generic metadata buffer head tracking and everybody is paying the overhead. When we remove this tracking for inode reclaim code .evict will start to see inodes with metadata buffers attached so write them out and prune them. Signed-off-by: Jan Kara Link: https://patch.msgid.link/20260326095354.16340-63-jack@suse.cz Tested-by: syzbot@syzkaller.appspotmail.com Signed-off-by: Christian Brauner

treewide: change inode->i_ino from unsigned long to u64

2026-03-06T13:31:28+00:00

On 32-bit architectures, unsigned long is only 32 bits wide, which causes 64-bit inode numbers to be silently truncated. Several filesystems (NFS, XFS, BTRFS, etc.) can generate inode numbers that exceed 32 bits, and this truncation can lead to inode number collisions and other subtle bugs on 32-bit systems. Change the type of inode->i_ino from unsigned long to u64 to ensure that inode numbers are always represented as 64-bit values regardless of architecture. Update all format specifiers treewide from %lu/%lx to %llu/%llx to match the new type, along with corresponding local variable types. This is the bulk treewide conversion. Earlier patches in this series handled trace events separately to allow trace field reordering for better struct packing on 32-bit. Signed-off-by: Jeff Layton Link: https://patch.msgid.link/20260304-iino-u64-v3-12-2257ad83d372@kernel.org Acked-by: Damien Le Moal Reviewed-by: Christoph Hellwig Reviewed-by: Jan Kara Reviewed-by: Chuck Lever Signed-off-by: Christian Brauner