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authorMiklos Szeredi <mszeredi@suse.cz>2013-05-01 14:37:21 +0200
committerMiklos Szeredi <mszeredi@suse.cz>2013-05-01 14:37:21 +0200
commit60b9df7a54804a965850db00beec4d3a2c002536 (patch)
treece3519c0708d6dd4113707c36a4ebdc6501542ef /fs/fuse/file.c
parentefb9fa9e911b23c7ea5330215bda778a7c69dba8 (diff)
fuse: add flag to turn on async direct IO
Without async DIO write requests to a single file were always serialized. With async DIO that's no longer the case. So don't turn on async DIO by default for fear of breaking backward compatibility. Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
Diffstat (limited to 'fs/fuse/file.c')
-rw-r--r--fs/fuse/file.c8
1 files changed, 4 insertions, 4 deletions
diff --git a/fs/fuse/file.c b/fs/fuse/file.c
index 1f8e3d60dc0..6ab7ca43f9e 100644
--- a/fs/fuse/file.c
+++ b/fs/fuse/file.c
@@ -2371,14 +2371,14 @@ fuse_direct_IO(int rw, struct kiocb *iocb, const struct iovec *iov,
loff_t offset, unsigned long nr_segs)
{
ssize_t ret = 0;
- struct file *file = NULL;
+ struct file *file = iocb->ki_filp;
+ struct fuse_file *ff = file->private_data;
loff_t pos = 0;
struct inode *inode;
loff_t i_size;
size_t count = iov_length(iov, nr_segs);
struct fuse_io_priv *io;
- file = iocb->ki_filp;
pos = offset;
inode = file->f_mapping->host;
i_size = i_size_read(inode);
@@ -2403,9 +2403,9 @@ fuse_direct_IO(int rw, struct kiocb *iocb, const struct iovec *iov,
io->file = file;
/*
* By default, we want to optimize all I/Os with async request
- * submission to the client filesystem.
+ * submission to the client filesystem if supported.
*/
- io->async = 1;
+ io->async = ff->fc->async_dio;
io->iocb = iocb;
/*