tree 83367ca6286f3ebfee8b94533152848e7529e9fb
parent 815c4163b6c8ebf8152f42b0a5fd015cfdcedc78
author Miklos Szeredi <mszeredi@suse.cz> 1278938500 +0200
committer Miklos Szeredi <mszeredi@suse.cz> 1278938500 +0200

fuse: don't use atomic kmap

Don't use atomic kmap for mapping userspace buffers in device
read/write/splice.

This is necessary because the next patch (adding store notify)
requires that caller of fuse_copy_page() may sleep between
invocations.  The simplest way to ensure this is to change the atomic
kmaps to non-atomic ones.

Thankfully architectures where kmap() is not a no-op are going out of
fashion, so we can ignore the (probably negligible) performance impact
of this change.

Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>