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authorMiklos Szeredi <mszeredi@suse.cz>2009-01-26 15:00:59 +0100
committerMiklos Szeredi <mszeredi@suse.de>2009-01-26 15:00:59 +0100
commitf6d47a1761896dcd89e3184399a8962dff17267d (patch)
tree60a7f1eee203f07db6f2a9d890b8ec78f190ea57 /fs
parent26c3679101dbccc054dcf370143941844ba70531 (diff)
downloadop-kernel-dev-f6d47a1761896dcd89e3184399a8962dff17267d.zip
op-kernel-dev-f6d47a1761896dcd89e3184399a8962dff17267d.tar.gz
fuse: fix poll notify
Move fuse_copy_finish() to before calling fuse_notify_poll_wakeup(). This is not a big issue because fuse_notify_poll_wakeup() should be atomic, but it's cleaner this way, and later uses of notification will need to be able to finish the copying before performing some actions. Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
Diffstat (limited to 'fs')
-rw-r--r--fs/fuse/dev.c13
1 files changed, 9 insertions, 4 deletions
diff --git a/fs/fuse/dev.c b/fs/fuse/dev.c
index c4a3d9b..ba76b68 100644
--- a/fs/fuse/dev.c
+++ b/fs/fuse/dev.c
@@ -826,16 +826,21 @@ static int fuse_notify_poll(struct fuse_conn *fc, unsigned int size,
struct fuse_copy_state *cs)
{
struct fuse_notify_poll_wakeup_out outarg;
- int err;
+ int err = -EINVAL;
if (size != sizeof(outarg))
- return -EINVAL;
+ goto err;
err = fuse_copy_one(cs, &outarg, sizeof(outarg));
if (err)
- return err;
+ goto err;
+ fuse_copy_finish(cs);
return fuse_notify_poll_wakeup(fc, &outarg);
+
+err:
+ fuse_copy_finish(cs);
+ return err;
}
static int fuse_notify(struct fuse_conn *fc, enum fuse_notify_code code,
@@ -846,6 +851,7 @@ static int fuse_notify(struct fuse_conn *fc, enum fuse_notify_code code,
return fuse_notify_poll(fc, size, cs);
default:
+ fuse_copy_finish(cs);
return -EINVAL;
}
}
@@ -924,7 +930,6 @@ static ssize_t fuse_dev_write(struct kiocb *iocb, const struct iovec *iov,
*/
if (!oh.unique) {
err = fuse_notify(fc, oh.error, nbytes - sizeof(oh), &cs);
- fuse_copy_finish(&cs);
return err ? err : nbytes;
}
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