| Message ID | 20210219033302.GY7193@magnolia (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | [GIT,PULL] iomap: new code for 5.12-rc1 | expand |
The pull request you sent on Thu, 18 Feb 2021 19:33:02 -0800:
> git://git.kernel.org/pub/scm/fs/xfs/xfs-linux.git tags/iomap-5.12-merge-2
has been merged into torvalds/linux.git:
https://git.kernel.org/torvalds/c/4f016a316f2243efb0d1c0e7259f07817eb99e67
Thank you!
Hi Linus, Please pull these new changes to the iomap code for 5.12. The big change in this cycle is some new code to make it possible for XFS to try unaligned directio overwrites without taking locks. If the block is fully written and within EOF (i.e. doesn't require any further fs intervention) then we can let the unlocked write proceed. If not, we fall back to synchronizing direct writes. Note that the btrfs developers have been working on supporting zoned block devices, and their 5.12 pull request has a single iomap patch to adjust directio writes to support REQ_OP_APPEND. The branch merges cleanly with 5.11 and has been soaking in for-next for quite a while now. Please let me know if there are any strange problems. It's been a pretty quiet cycle, so I don't anticipate any more iomap pulls other than whatever new bug fixes show up. --D (whose pull requests are delayed by last weekend's wild ride :( ) The following changes since commit 19c329f6808995b142b3966301f217c831e7cf31: Linux 5.11-rc4 (2021-01-17 16:37:05 -0800) are available in the Git repository at: git://git.kernel.org/pub/scm/fs/xfs/xfs-linux.git tags/iomap-5.12-merge-2 for you to fetch changes up to ed1128c2d0c87e5ff49c40f5529f06bc35f4251b: xfs: reduce exclusive locking on unaligned dio (2021-02-01 09:47:19 -0800) ---------------------------------------------------------------- New code for 5.12: - Adjust the final parameter of iomap_dio_rw. - Add a new flag to request that iomap directio writes return EAGAIN if the write is not a pure overwrite within EOF; this will be used to reduce lock contention with unaligned direct writes on XFS. - Amend XFS' directio code to eliminate exclusive locking for unaligned direct writes if the circumstances permit ---------------------------------------------------------------- Christoph Hellwig (9): iomap: rename the flags variable in __iomap_dio_rw iomap: pass a flags argument to iomap_dio_rw iomap: add a IOMAP_DIO_OVERWRITE_ONLY flag xfs: factor out a xfs_ilock_iocb helper xfs: make xfs_file_aio_write_checks IOCB_NOWAIT-aware xfs: cleanup the read/write helper naming xfs: remove the buffered I/O fallback assert xfs: simplify the read/write tracepoints xfs: improve the reflink_bounce_dio_write tracepoint Dave Chinner (2): xfs: split the unaligned DIO write code out xfs: reduce exclusive locking on unaligned dio fs/btrfs/file.c | 7 +- fs/ext4/file.c | 5 +- fs/gfs2/file.c | 7 +- fs/iomap/direct-io.c | 26 ++-- fs/xfs/xfs_file.c | 351 ++++++++++++++++++++++++++++---------------------- fs/xfs/xfs_iomap.c | 29 +++-- fs/xfs/xfs_trace.h | 22 ++-- fs/zonefs/super.c | 4 +- include/linux/iomap.h | 18 ++- 9 files changed, 269 insertions(+), 200 deletions(-)