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authorJeff Dike <jdike@addtoit.com>2006-04-10 22:54:53 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2006-04-11 06:18:48 -0700
commite5ac1d1e70a8c19a65a959d73650203df7a2e168 (patch)
treee3efd114e3350c270d3693266d38d07eaedae757 /fs/fuse/dev.c
parent385a17bfc3cb035333c8a91eddc78a6e04c4625e (diff)
downloadop-kernel-dev-e5ac1d1e70a8c19a65a959d73650203df7a2e168.zip
op-kernel-dev-e5ac1d1e70a8c19a65a959d73650203df7a2e168.tar.gz
[PATCH] fuse: add O_NONBLOCK support to FUSE device
I don't like duplicating the connected and list_empty tests in fuse_dev_readv, but this seemed cleaner than adding the f_flags test to request_wait. Signed-off-by: Jeff Dike <jdike@addtoit.com> Signed-off-by: Miklos Szeredi <miklos@szeredi.hu> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'fs/fuse/dev.c')
-rw-r--r--fs/fuse/dev.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/fs/fuse/dev.c b/fs/fuse/dev.c
index 438770f..75c6e91 100644
--- a/fs/fuse/dev.c
+++ b/fs/fuse/dev.c
@@ -619,6 +619,12 @@ static ssize_t fuse_dev_readv(struct file *file, const struct iovec *iov,
err = -EPERM;
if (!fc)
goto err_unlock;
+
+ err = -EAGAIN;
+ if ((file->f_flags & O_NONBLOCK) && fc->connected &&
+ list_empty(&fc->pending))
+ goto err_unlock;
+
request_wait(fc);
err = -ENODEV;
if (!fc->connected)
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