[GIT PULL] gfs2 fixes for v5.16-rc2

[GIT PULL] gfs2 fixes for v5.16-rc2

[Andreas Gruenbacher]

Hi Linus,

please consider pulling the following gfs2 fixes for -rc2.  The one thing that
stands out is this commit:

  gfs2: Prevent endless loops in gfs2_file_buffered_write

We have a choice here between the proper fix in iomap_write_iter and
generic_perform_write and this patch, which is just a workaround.  I've tried
to get your feedback on this before:

  https://lore.kernel.org/all/20211110174457.533866-1-agruenba@redhat.com/

To me, it seems to be too late for the proper fix for v5.16 now; please advise
if you think otherwise.

Thanks,
Andreas


The following changes since commit 78805cbe5d72ad27a56962a8072edbcb45ca1180:

  Merge tag 'gfs2-v5.15-rc5-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2 (2021-11-02 12:35:04 -0700)

are available in the Git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2.git tags/gfs2-v5.16-rc2-fixes

for you to fetch changes up to 554c577cee95bdc1d03d9f457e57dc96eb791845:

  gfs2: Prevent endless loops in gfs2_file_buffered_write (2021-11-10 18:22:37 +0100)

----------------------------------------------------------------
Fixes in gfs2:
* The current iomap_file_buffered_write behavior of failing the entire
  write when part of the user buffer cannot be faulted in leads to an
  endless loop in gfs2.  Work around that in gfs2 for now.
* Various other bugs all over the place.

----------------------------------------------------------------
Andreas Gruenbacher (5):
      gfs2: Only dereference i->iov when iter_is_iovec(i)
      gfs2: Fix atomic bug in gfs2_instantiate
      gfs2: Fix length of holes reported at end-of-file
      gfs2: Fix "Introduce flag for glock holder auto-demotion"
      gfs2: Prevent endless loops in gfs2_file_buffered_write

Bob Peterson (1):
      gfs2: release iopen glock early in evict

 fs/gfs2/bmap.c  |  2 +-
 fs/gfs2/file.c  |  9 ++++++---
 fs/gfs2/glock.c | 12 ++++--------
 fs/gfs2/super.c | 14 +++++++-------
 4 files changed, 18 insertions(+), 19 deletions(-)

Re: [GIT PULL] gfs2 fixes for v5.16-rc2

[Linus Torvalds]

On Wed, Nov 17, 2021 at 3:37 PM Andreas Gruenbacher <agruenba@redhat.com> wrote:
>
> We have a choice here between the proper fix in iomap_write_iter and
> generic_perform_write and this patch, which is just a workaround.  I've tried
> to get your feedback on this before:

Well, you did get Catalin's feedback, and I didn't have any strong
opinions on it, so..

I do think that iomap_write_iter() should be fixed, but I also agree
with your "by now too late", so I've pulled your gfs2 workaround.

          Linus

Re: [GIT PULL] gfs2 fixes for v5.16-rc2

[pr-tracker-bot]

The pull request you sent on Thu, 18 Nov 2021 00:36:56 +0100:

> git://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2.git tags/gfs2-v5.16-rc2-fixes

has been merged into torvalds/linux.git:
https://git.kernel.org/torvalds/c/42eb8fdac2fc5d62392dcfcf0253753e821a97b0

Thank you!

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