9p: convert to advancing variant of iov_iter_get_pages_alloc()

that one is somewhat clumsier than usual and needs serious testing.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2022-06-10 11:42:02 -04:00
commit 7f02464739
3 changed files with 26 additions and 19 deletions