linux-stable.git/fs/super.c, branch v5.16

fs: explicitly unregister per-superblock BDIs

2021-11-06T20:30:34+00:00

Add a new SB_I_ flag to mark superblocks that have an ephemeral bdi
associated with them, and unregister it when the superblock is shut
down.

Link: https://lkml.kernel.org/r/20211021124441.668816-4-hch@lst.de
Signed-off-by: Christoph Hellwig 
Reviewed-by: Jan Kara 
Cc: Miquel Raynal 
Cc: Richard Weinberger 
Cc: Vignesh Raghavendra 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

block: remove the bd_bdi in struct block_device

2021-08-09T17:53:26+00:00

Just retrieve the bdi from the disk.

Signed-off-by: Christoph Hellwig 
Reviewed-by: Jan Kara 
Reviewed-by: Johannes Thumshirn 
Link: https://lore.kernel.org/r/20210809141744.1203023-6-hch@lst.de
Signed-off-by: Jens Axboe

block: move bd_mutex to struct gendisk

2021-06-01T13:44:32+00:00

Replace the per-block device bd_mutex with a per-gendisk open_mutex,
thus simplifying locking wherever we deal with partitions.

Signed-off-by: Christoph Hellwig 
Reviewed-by: Ming Lei 
Acked-by: Roger Pau Monné 
Link: https://lore.kernel.org/r/20210525061301.2242282-4-hch@lst.de
Signed-off-by: Jens Axboe

fs,security: Add sb_delete hook

2021-04-22T19:22:11+00:00

The sb_delete security hook is called when shutting down a superblock,
which may be useful to release kernel objects tied to the superblock's
lifetime (e.g. inodes).

This new hook is needed by Landlock to release (ephemerally) tagged
struct inodes.  This comes from the unprivileged nature of Landlock
described in the next commit.

Cc: Al Viro 
Cc: James Morris 
Signed-off-by: Mickaël Salaün 
Reviewed-by: Jann Horn 
Acked-by: Serge Hallyn 
Reviewed-by: Kees Cook 
Link: https://lore.kernel.org/r/20210422154123.13086-7-mic@digikod.net
Signed-off-by: James Morris

Merge tag 'docs-5.12' of git://git.lwn.net/linux

2021-02-22T18:57:46+00:00

Pull documentation updates from Jonathan Corbet:
 "It has been a relatively quiet cycle in docsland.

   - As promised, the minimum Sphinx version to build the docs is now
     1.7, and we have dropped support for Python 2 entirely. That
     allowed the removal of a bunch of compatibility code.

   - A set of treewide warning fixups from Mauro that I applied after it
     became clear nobody else was going to deal with them.

   - The automarkup mechanism can now create cross-references from
     relative paths to RST files.

   - More translations, typo fixes, and warning fixes"

* tag 'docs-5.12' of git://git.lwn.net/linux: (75 commits)
  docs: kernel-hacking: be more civil
  docs: Remove the Microsoft rhetoric
  Documentation/admin-guide: kernel-parameters: Update nohlt section
  doc/admin-guide: fix spelling mistake: "perfomance" -> "performance"
  docs: Document cross-referencing using relative path
  docs: Enable usage of relative paths to docs on automarkup
  docs: thermal: fix spelling mistakes
  Documentation: admin-guide: Update kvm/xen config option
  docs: Make syscalls' helpers naming consistent
  coding-style.rst: Avoid comma statements
  Documentation: /proc/loadavg: add 3 more field descriptions
  Documentation/submitting-patches: Add blurb about backtraces in commit messages
  Docs: drop Python 2 support
  Move our minimum Sphinx version to 1.7
  Documentation: input: define ABS_PRESSURE/ABS_MT_PRESSURE resolution as grams
  scripts/kernel-doc: add internal hyperlink to DOC: sections
  Update Documentation/admin-guide/sysctl/fs.rst
  docs: Update DTB format references
  docs: zh_CN: add iio index.rst translation
  docs/zh_CN: add iio ep93xx_adc.rst translation
  ...

block: remove the NULL bdev check in bdev_read_only

2021-01-25T01:15:57+00:00

Only a single caller can end up in bdev_read_only, so move the check
there.

Signed-off-by: Christoph Hellwig 
Reviewed-by: Ming Lei 
Reviewed-by: Martin K. Petersen 
Reviewed-by: Hannes Reinecke 
Signed-off-by: Jens Axboe

fs: fix kernel-doc markups

2021-01-21T21:06:00+00:00

Two markups are at the wrong place. Kernel-doc only
support having the comment just before the identifier.

Also, some identifiers have different names between their
prototypes and the kernel-doc markup.

Signed-off-by: Mauro Carvalho Chehab 
Link: https://lore.kernel.org/r/96b1e1b388600ab092331f6c4e88ff8e8779ce6c.1610610937.git.mchehab+huawei@kernel.org
Signed-off-by: Jonathan Corbet

block: remove i_bdev

2020-12-01T21:53:39+00:00

Switch the block device lookup interfaces to directly work with a dev_t
so that struct block_device references are only acquired by the
blkdev_get variants (and the blk-cgroup special case).  This means that
we now don't need an extra reference in the inode and can generally
simplify handling of struct block_device to keep the lookups contained
in the core block layer code.

Signed-off-by: Christoph Hellwig 
Reviewed-by: Jan Kara 
Reviewed-by: Hannes Reinecke 
Acked-by: Tejun Heo 
Acked-by: Coly Li 		[bcache]
Signed-off-by: Jens Axboe

fs: remove get_super_thawed and get_super_exclusive_thawed

2020-12-01T21:53:38+00:00

Just open code the wait in the only caller of both functions.

Signed-off-by: Christoph Hellwig 
Reviewed-by: Jan Kara 
Reviewed-by: Hannes Reinecke 
Signed-off-by: Jens Axboe

vfs: move __sb_{start,end}_write* to fs.h

2020-11-11T00:53:11+00:00

Now that we've straightened out the callers, move these three functions
to fs.h since they're fairly trivial.

Signed-off-by: Darrick J. Wong 
Reviewed-by: Christoph Hellwig 
Reviewed-by: Jan Kara