exofs: Allow O_DIRECT open
With this minimal do nothing patch an application can open O_DIRECT
and then actually do buffered sync IO instead. But the aio API is
supported which is a good thing
Signed-off-by: Boaz Harrosh <bharrosh@panasas.com>
diff --git a/fs/exofs/inode.c b/fs/exofs/inode.c
index a52a5d2..7e7ba9a 100644
--- a/fs/exofs/inode.c
+++ b/fs/exofs/inode.c
@@ -961,6 +961,14 @@
WARN_ON(1);
}
+
+ /* TODO: Should be easy enough to do proprly */
+static ssize_t exofs_direct_IO(int rw, struct kiocb *iocb,
+ const struct iovec *iov, loff_t offset, unsigned long nr_segs)
+{
+ return 0;
+}
+
const struct address_space_operations exofs_aops = {
.readpage = exofs_readpage,
.readpages = exofs_readpages,
@@ -974,7 +982,7 @@
/* Not implemented Yet */
.bmap = NULL, /* TODO: use osd's OSD_ACT_READ_MAP */
- .direct_IO = NULL, /* TODO: Should be trivial to do */
+ .direct_IO = exofs_direct_IO,
/* With these NULL has special meaning or default is not exported */
.get_xip_mem = NULL,
