Hi Eric, Dominique,
Here are some netfslib-related changes we might want to consider applying
to 9p:
(1) Enable large folio support for 9p. This is handled entirely by
netfslib and is already supported in afs. I wonder if we should limit
the maximum folio size to 1MiB to match the maximum I/O size in the 9p
protocol.
(2) Make better use of netfslib's writethrough caching support by not
disabling caching for O_DSYNC. netfs_perform_write() will set up
and dispatch write requests as it copies data into the pagecache.
(3) Always update netfs_inode::remote_size to reflect what we think the
server's idea of the file size is. This is separate from
inode::i_size which is our idea of what it should be if all of our
outstanding dirty data is committed.
The patches can also be found here:
https://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs.git/log/?h=netfs-9p
Thanks,
David
David Howells (2):
9p: Make better use of netfslib's writethrough caching
9p: Always update remote_i_size in stat2inode
Dominique Martinet (1):
9p: Enable large folio support
fs/9p/fid.h | 3 +--
fs/9p/vfs_inode.c | 1 +
fs/9p/vfs_inode_dotl.c | 6 +++---
3 files changed, 5 insertions(+), 5 deletions(-)
