Merge tag 'vfs-6.14-rc1.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs

Pull misc vfs updates from Christian Brauner:
"Features:

- Support caching symlink lengths in inodes

Merge tag 'vfs-6.14-rc1.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs

Pull misc vfs updates from Christian Brauner:
"Features:

- Support caching symlink lengths in inodes

The size is stored in a new union utilizing the same space as
i_devices, thus avoiding growing the struct or taking up any more
space

When utilized it dodges strlen() in vfs_readlink(), giving about
1.5% speed up when issuing readlink on /initrd.img on ext4

- Add RWF_DONTCACHE iocb and FOP_DONTCACHE file_operations flag

If a file system supports uncached buffered IO, it may set
FOP_DONTCACHE and enable support for RWF_DONTCACHE.

If RWF_DONTCACHE is attempted without the file system supporting
it, it'll get errored with -EOPNOTSUPP

- Enable VBOXGUEST and VBOXSF_FS on ARM64

Now that VirtualBox is able to run as a host on arm64 (e.g. the
Apple M3 processors) we can enable VBOXSF_FS (and in turn
VBOXGUEST) for this architecture.

Tested with various runs of bonnie++ and dbench on an Apple MacBook
Pro with the latest Virtualbox 7.1.4 r165100 installed

Cleanups:

- Delay sysctl_nr_open check in expand_files()

- Use kernel-doc includes in fiemap docbook

- Use page->private instead of page->index in watch_queue

- Use a consume fence in mnt_idmap() as it's heavily used in
link_path_walk()

- Replace magic number 7 with ARRAY_SIZE() in fc_log

- Sort out a stale comment about races between fd alloc and dup2()

- Fix return type of do_mount() from long to int

- Various cosmetic cleanups for the lockref code

Fixes:

- Annotate spinning as unlikely() in __read_seqcount_begin

The annotation already used to be there, but got lost in commit
52ac39e5db51 ("seqlock: seqcount_t: Implement all read APIs as
statement expressions")

- Fix proc_handler for sysctl_nr_open

- Flush delayed work in delayed fput()

- Fix grammar and spelling in propagate_umount()

- Fix ESP not readable during coredump

In /proc/PID/stat, there is the kstkesp field which is the stack
pointer of a thread. While the thread is active, this field reads
zero. But during a coredump, it should have a valid value

However, at the moment, kstkesp is zero even during coredump

- Don't wake up the writer if the pipe is still full

- Fix unbalanced user_access_end() in select code"

* tag 'vfs-6.14-rc1.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs: (28 commits)
gfs2: use lockref_init for qd_lockref
erofs: use lockref_init for pcl->lockref
dcache: use lockref_init for d_lockref
lockref: add a lockref_init helper
lockref: drop superfluous externs
lockref: use bool for false/true returns
lockref: improve the lockref_get_not_zero description
lockref: remove lockref_put_not_zero
fs: Fix return type of do_mount() from long to int
select: Fix unbalanced user_access_end()
vbox: Enable VBOXGUEST and VBOXSF_FS on ARM64
pipe_read: don't wake up the writer if the pipe is still full
selftests: coredump: Add stackdump test
fs/proc: do_task_stat: Fix ESP not readable during coredump
fs: add RWF_DONTCACHE iocb and FOP_DONTCACHE file_operations flag
fs: sort out a stale comment about races between fd alloc and dup2
fs: Fix grammar and spelling in propagate_umount()
fs: fc_log replace magic number 7 with ARRAY_SIZE()
fs: use a consume fence in mnt_idmap()
file: flush delayed work in delayed fput()
...

show more ...

vbox: Enable VBOXGUEST and VBOXSF_FS on ARM64

Now that VirtualBox is able to run as a host on arm64 (e.g. the Apple M3
processors) we can enable VBOXSF_FS (and in turn VBOXGUEST) for this
architectu

vbox: Enable VBOXGUEST and VBOXSF_FS on ARM64

Now that VirtualBox is able to run as a host on arm64 (e.g. the Apple M3
processors) we can enable VBOXSF_FS (and in turn VBOXGUEST) for this
architecture. Tested with various runs of bonnie++ and dbench on an Apple
MacBook Pro with the latest Virtualbox 7.1.4 r165100 installed.

Signed-off-by: Christian Kujau <lists@nerdbynature.de>
Link: https://lore.kernel.org/r/7384d96c-2a77-39b0-2306-90129bae9342@nerdbynature.de
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Christian Brauner <brauner@kernel.org>

show more ...

Merge branch 'next' into for-linus

Prepare input updates for 5.8 merge window.

Merge branch 'for-5.8' into for-linus

Merge tag 'v5.6' into next

Sync up with mainline to get device tree and other changes.

Merge branch 'for-5.7/appleir' into for-linus

- small code cleanups in hid-appleir from Lucas Tanure

Merge branch 'x86/kdump' into locking/kcsan, to resolve conflicts

Conflicts:
arch/x86/purgatory/Makefile

Signed-off-by: Ingo Molnar <mingo@kernel.org>

Merge drm/drm-next into drm-intel-next-queued

Some DSI and VBT pending patches from Hans will apply
cleanly and with less ugly conflicts if they are rebuilt
on top of other patches that recently lan

Merge drm/drm-next into drm-intel-next-queued

Some DSI and VBT pending patches from Hans will apply
cleanly and with less ugly conflicts if they are rebuilt
on top of other patches that recently landed on drm-next.

Reference: https://patchwork.freedesktop.org/series/70952/
Cc: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com

show more ...

Merge tag 'v5.6-rc3' into sched/core, to pick up fixes and dependent patches

Signed-off-by: Ingo Molnar <mingo@kernel.org>

Merge v5.6-rc2 into drm-misc-next

Lyude needs some patches in 5.6-rc2 and we didn't bring drm-misc-next
forward yet, so it looks like a good occasion.

Signed-off-by: Maxime Ripard <maxime@cerno.tec

Merge v5.6-rc2 into drm-misc-next

Lyude needs some patches in 5.6-rc2 and we didn't bring drm-misc-next
forward yet, so it looks like a good occasion.

Signed-off-by: Maxime Ripard <maxime@cerno.tech>

show more ...

Merge v5.6-rc1 into drm-misc-fixes

We're based on v5.6, need v5.6-rc1 at least. :)

Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>

Merge tag 'v5.6-rc1' into arm/fixes

Linux 5.6-rc1

Merging in to avoid fixes pull request diffstats being noisy due to
being based on -rc1.

Signed-off-by: Olof Johansson <olof@lixom.net>

Merge branch 'work.vboxsf' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

Pull vboxfs from Al Viro:
"This is the VirtualBox guest shared folder support by Hans de Goede,
with fixups fo

Merge branch 'work.vboxsf' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

Pull vboxfs from Al Viro:
"This is the VirtualBox guest shared folder support by Hans de Goede,
with fixups for fs_parse folded in to avoid bisection hazards from
those API changes..."

* 'work.vboxsf' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
fs: Add VirtualBox guest shared folder (vboxsf) support

show more ...

fs: Add VirtualBox guest shared folder (vboxsf) support

VirtualBox hosts can share folders with guests, this commit adds a
VFS driver implementing the Linux-guest side of this, allowing folders
expo

fs: Add VirtualBox guest shared folder (vboxsf) support

VirtualBox hosts can share folders with guests, this commit adds a
VFS driver implementing the Linux-guest side of this, allowing folders
exported by the host to be mounted under Linux.

This driver depends on the guest <-> host IPC functions exported by
the vboxguest driver.

Acked-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

show more ...