| From: |
| Goldwyn Rodrigues <rgoldwyn-AT-suse.de> |
| To: |
| linux-fsdevel-AT-vger.kernel.org |
| Subject: |
| [PATCH v3 0/15] Btrfs iomap |
| Date: |
| Sun, 1 Sep 2019 15:08:21 -0500 |
| Message-ID: |
| <20190901200836.14959-1-rgoldwyn@suse.de> |
| Cc: |
| linux-btrfs-AT-vger.kernel.org, darrick.wong-AT-oracle.com, hch-AT-lst.de, david-AT-fromorbit.com, riteshh-AT-linux.ibm.com |
| Archive-link: |
| Article |
This is an effort to use iomap for btrfs. This would keep most
responsibility of page handling during writes in iomap code, hence
code reduction. For CoW support, changes are needed in iomap code
to make sure we perform a copy before the write.
This is in line with the discussion we had during adding dax support in
btrfs.
[1] https://github.com/goldwynr/linux/tree/btrfs-iomap
--
Goldwyn
Changes since v1
- Added Direct I/O support
- Remove PagePrivate from btrfs pages for regular files
Changes since v2
- Added CONFIG_FS_IOMAP_DEBUG and some checks
- Fallback to buffered read in case of short direct reads
fs/Kconfig | 3
fs/btrfs/Kconfig | 1
fs/btrfs/Makefile | 2
fs/btrfs/compression.c | 1
fs/btrfs/ctree.h | 15 -
fs/btrfs/extent_io.c | 13
fs/btrfs/extent_io.h | 2
fs/btrfs/file.c | 523 +-------------------------------------
fs/btrfs/free-space-cache.c | 1
fs/btrfs/inode.c | 170 +++---------
fs/btrfs/ioctl.c | 4
fs/btrfs/iomap.c | 598 +++++++++++++++++++++++++++++++++++++++++++-
fs/btrfs/relocation.c | 2
fs/dax.c | 8
fs/ext2/inode.c | 2
fs/ext4/inode.c | 2
fs/gfs2/bmap.c | 3
fs/iomap/apply.c | 5
fs/iomap/buffered-io.c | 37 +-
fs/iomap/direct-io.c | 18 -
fs/iomap/fiemap.c | 4
fs/iomap/seek.c | 4
fs/iomap/swapfile.c | 3
fs/xfs/xfs_iomap.c | 9
include/linux/fs.h | 2
include/linux/iomap.h | 18 +
mm/filemap.c | 13
27 files changed, 757 insertions(+), 706 deletions(-)
