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authorMiklos Szeredi <mszeredi@suse.cz>2009-04-02 14:25:34 +0200
committerMiklos Szeredi <mszeredi@suse.cz>2009-04-02 14:25:34 +0200
commitf4975c67dd9ad8eb47a4c77af0521a2b16ee0197 (patch)
tree4d4642e04e40f4835df9a18192da53b98b206bf8 /fs/fuse/dir.c
parent833bb3046b6cb320e775ea2160ddca87d53260d5 (diff)
downloadop-kernel-dev-f4975c67dd9ad8eb47a4c77af0521a2b16ee0197.zip
op-kernel-dev-f4975c67dd9ad8eb47a4c77af0521a2b16ee0197.tar.gz
fuse: allow kernel to access "direct_io" files
Allow the kernel read and write on "direct_io" files. This is necessary for nfs export and execute support. The implementation is simple: if an access from the kernel is detected, don't perform get_user_pages(), just use the kernel address provided by the requester to copy from/to the userspace filesystem. Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
Diffstat (limited to 'fs/fuse/dir.c')
-rw-r--r--fs/fuse/dir.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/fuse/dir.c b/fs/fuse/dir.c
index 06da052..8b8eebc 100644
--- a/fs/fuse/dir.c
+++ b/fs/fuse/dir.c
@@ -1032,6 +1032,7 @@ static int fuse_readdir(struct file *file, void *dstbuf, filldir_t filldir)
fuse_put_request(fc, req);
return -ENOMEM;
}
+ req->out.argpages = 1;
req->num_pages = 1;
req->pages[0] = page;
fuse_read_fill(req, file, inode, file->f_pos, PAGE_SIZE, FUSE_READDIR);
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