Hi all, this series overhaults a large chunk of the iomap writeback code with the end result that ->map_blocks can now map multiple blocks at a time, at least as long as they are all inside the same folio. Variants of this have passed a lot of testing on XFS, but I haven't even starting testing it with other file systems. In terms of performance there is a very slight reduction in large write workloads, but the main point for me was to enable other work anyway. Diffstat: fs/iomap/buffered-io.c | 561 +++++++++++++++++++++++-------------------------- fs/xfs/xfs_aops.c | 6 include/linux/iomap.h | 17 + 3 files changed, 287 insertions(+), 297 deletions(-)
