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Date: Tue, 2 Nov 2021 13:29:28 +0100
From: Andreas Gruenbacher <agruenba@...hat.com>
To: cluster-devel@...hat.com
Cc: Linus Torvalds <torvalds@...ux-foundation.org>,
Catalin Marinas <catalin.marinas@....com>,
Alexander Viro <viro@...iv.linux.org.uk>,
Christoph Hellwig <hch@...radead.org>,
"Darrick J. Wong" <djwong@...nel.org>,
Paul Mackerras <paulus@...abs.org>, Jan Kara <jack@...e.cz>,
Matthew Wilcox <willy@...radead.org>,
linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
ocfs2-devel@....oracle.com, kvm-ppc@...r.kernel.org,
linux-btrfs@...r.kernel.org,
Andreas Gruenbacher <agruenba@...hat.com>
Subject: [PATCH v9 00/17] gfs2: Fix mmap + page fault deadlocks
Here's another update of this patch queue on top of v5.15-rc5. Changes:
* Fix a bug in the do_promote changes of "gfs2: Clean up function
may_grant" (find_first_holder needs to be called inside the restart
loop).
* Add a comment explaining __iomap_dio_rw's new done_before argument
per request of Darrick J. Wong.
* Use untagged_addr() in fault_in_safe_writeable as per comment from
Catalin Marinas.
I've pushed is patch set here:
https://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2.git/log/?h=for-next.mmap-fault
b01b2d72da25c000aeb124bc78daf3fb998be2b6
These changes are from October 25, so they've had some exposure in
for-next. As Stephen Rothwell points out, there's a minor merge
conflict between commit:
bb523b406c84 ("gup: Turn fault_in_pages_{readable,writeable} into fault_in_{readable,writeable}")
from this patch set and the following two commits in mainline:
fcfb7163329c ("x86/fpu/signal: Move xstate clearing out of copy_fpregs_to_sigframe()")
a2a8fd9a3efd ("x86/fpu/signal: Change return code of restore_fpregs_from_user() to boolean")
Thanks,
Andreas
Andreas Gruenbacher (16):
iov_iter: Fix iov_iter_get_pages{,_alloc} page fault return value
powerpc/kvm: Fix kvm_use_magic_page
gup: Turn fault_in_pages_{readable,writeable} into
fault_in_{readable,writeable}
iov_iter: Turn iov_iter_fault_in_readable into
fault_in_iov_iter_readable
iov_iter: Introduce fault_in_iov_iter_writeable
gfs2: Add wrapper for iomap_file_buffered_write
gfs2: Clean up function may_grant
gfs2: Move the inode glock locking to gfs2_file_buffered_write
gfs2: Eliminate ip->i_gh
gfs2: Fix mmap + page fault deadlocks for buffered I/O
iomap: Fix iomap_dio_rw return value for user copies
iomap: Support partial direct I/O on user copy failures
iomap: Add done_before argument to iomap_dio_rw
gup: Introduce FOLL_NOFAULT flag to disable page faults
iov_iter: Introduce nofault flag to disable page faults
gfs2: Fix mmap + page fault deadlocks for direct I/O
Bob Peterson (1):
gfs2: Introduce flag for glock holder auto-demotion
arch/powerpc/kernel/kvm.c | 3 +-
arch/powerpc/kernel/signal_32.c | 4 +-
arch/powerpc/kernel/signal_64.c | 2 +-
arch/x86/kernel/fpu/signal.c | 7 +-
drivers/gpu/drm/armada/armada_gem.c | 7 +-
fs/btrfs/file.c | 7 +-
fs/btrfs/ioctl.c | 5 +-
fs/erofs/data.c | 2 +-
fs/ext4/file.c | 5 +-
fs/f2fs/file.c | 2 +-
fs/fuse/file.c | 2 +-
fs/gfs2/bmap.c | 60 +----
fs/gfs2/file.c | 252 +++++++++++++++++++--
fs/gfs2/glock.c | 330 +++++++++++++++++++++-------
fs/gfs2/glock.h | 20 ++
fs/gfs2/incore.h | 4 +-
fs/iomap/buffered-io.c | 2 +-
fs/iomap/direct-io.c | 29 ++-
fs/ntfs/file.c | 2 +-
fs/ntfs3/file.c | 2 +-
fs/xfs/xfs_file.c | 6 +-
fs/zonefs/super.c | 4 +-
include/linux/iomap.h | 11 +-
include/linux/mm.h | 3 +-
include/linux/pagemap.h | 58 +----
include/linux/uio.h | 4 +-
lib/iov_iter.c | 103 +++++++--
mm/filemap.c | 4 +-
mm/gup.c | 139 +++++++++++-
29 files changed, 793 insertions(+), 286 deletions(-)
--
2.31.1
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