Hi all, this series adds two minor improvements to iomap that allow btrfs to avoid a memory allocation per read/write system call and another one per submitted bio. I also have at last two other pending uses for the iomap functionality later on, so they are not really btrfs specific either. Changes since v1: - pass the private data direct to iomap_dio_rw instead of through the iocb - better document the bio_set in iomap_dio_ops - split a patch into three - use kcalloc to allocate the checksums Diffstat: fs/btrfs/btrfs_inode.h | 25 -------- fs/btrfs/ctree.h | 6 - fs/btrfs/file.c | 6 - fs/btrfs/inode.c | 152 +++++++++++++++++++++++-------------------------- fs/erofs/data.c | 2 fs/ext4/file.c | 4 - fs/f2fs/file.c | 4 - fs/gfs2/file.c | 4 - fs/iomap/direct-io.c | 26 ++++++-- fs/xfs/xfs_file.c | 6 - fs/zonefs/super.c | 4 - include/linux/iomap.h | 16 ++++- 12 files changed, 123 insertions(+), 132 deletions(-)
