[Cluster-devel] cleanup the filemap / direct I/O interaction v4
Christoph Hellwig
hch at lst.de
Thu Jun 1 14:58:52 UTC 2023
Hi all,
this series cleans up some of the generic write helper calling
conventions and the page cache writeback / invalidation for
direct I/O. This is a spinoff from the no-bufferhead kernel
project, for which we'll want to an use iomap based buffered
write path in the block layer.
Changes since v3:
- fix a generic_sync_file that got lost in fuse
- fix fuse to call fuse_perform_write and not generic_perform_write
Changes since v2:
- stick to the existing behavior of returning a short write
if the buffer fallback write or sync fails
- bring back "fuse: use direct_write_fallback" which accidentally
got lost in v2
Changes since v1:
- remove current->backing_dev_info entirely
- fix the pos/end calculation in direct_write_fallback
- rename kiocb_invalidate_post_write to
kiocb_invalidate_post_direct_write
- typo fixes
diffstat:
block/fops.c | 18 ----
fs/btrfs/file.c | 6 -
fs/ceph/file.c | 6 -
fs/direct-io.c | 10 --
fs/ext4/file.c | 11 --
fs/f2fs/file.c | 3
fs/fuse/file.c | 45 ++---------
fs/gfs2/file.c | 6 -
fs/iomap/buffered-io.c | 9 +-
fs/iomap/direct-io.c | 88 ++++++++-------------
fs/libfs.c | 41 ++++++++++
fs/nfs/file.c | 6 -
fs/ntfs/file.c | 2
fs/ntfs3/file.c | 3
fs/xfs/xfs_file.c | 6 -
fs/zonefs/file.c | 4
include/linux/fs.h | 7 -
include/linux/pagemap.h | 4
include/linux/sched.h | 3
mm/filemap.c | 194 +++++++++++++++++++++---------------------------
20 files changed, 194 insertions(+), 278 deletions(-)
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