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Subject[PATCH 15/17] fuse: READ request initialization
Add a separate function for filling in the READ request.  This will
make it possible to send asynchronous READ requests as well as
synchronous ones.

Signed-off-by: Miklos Szeredi <miklos@szeredi.hu>

Index: linux/fs/fuse/dir.c
===================================================================
--- linux.orig/fs/fuse/dir.c 2006-01-13 23:40:09.000000000 +0100
+++ linux/fs/fuse/dir.c 2006-01-14 00:48:17.000000000 +0100
@@ -762,12 +762,6 @@ static int parse_dirfile(char *buf, size
return 0;
}

-static size_t fuse_send_readdir(struct fuse_req *req, struct file *file,
- struct inode *inode, loff_t pos, size_t count)
-{
- return fuse_send_read_common(req, file, inode, pos, count, 1);
-}
-
static int fuse_readdir(struct file *file, void *dstbuf, filldir_t filldir)
{
int err;
@@ -791,7 +785,9 @@ static int fuse_readdir(struct file *fil
}
req->num_pages = 1;
req->pages[0] = page;
- nbytes = fuse_send_readdir(req, file, inode, file->f_pos, PAGE_SIZE);
+ fuse_read_fill(req, file, inode, file->f_pos, PAGE_SIZE, FUSE_READDIR);
+ request_send(fc, req);
+ nbytes = req->out.args[0].size;
err = req->out.h.error;
fuse_put_request(fc, req);
if (!err)
Index: linux/fs/fuse/file.c
===================================================================
--- linux.orig/fs/fuse/file.c 2006-01-14 00:43:41.000000000 +0100
+++ linux/fs/fuse/file.c 2006-01-14 00:48:17.000000000 +0100
@@ -250,19 +250,16 @@ static int fuse_fsync(struct file *file,
return fuse_fsync_common(file, de, datasync, 0);
}

-size_t fuse_send_read_common(struct fuse_req *req, struct file *file,
- struct inode *inode, loff_t pos, size_t count,
- int isdir)
+void fuse_read_fill(struct fuse_req *req, struct file *file,
+ struct inode *inode, loff_t pos, size_t count, int opcode)
{
- struct fuse_conn *fc = get_fuse_conn(inode);
struct fuse_file *ff = file->private_data;
- struct fuse_read_in inarg;
+ struct fuse_read_in *inarg = &req->misc.read_in;

- memset(&inarg, 0, sizeof(struct fuse_read_in));
- inarg.fh = ff->fh;
- inarg.offset = pos;
- inarg.size = count;
- req->in.h.opcode = isdir ? FUSE_READDIR : FUSE_READ;
+ inarg->fh = ff->fh;
+ inarg->offset = pos;
+ inarg->size = count;
+ req->in.h.opcode = opcode;
req->in.h.nodeid = get_node_id(inode);
req->inode = inode;
req->file = file;
@@ -273,14 +270,15 @@ size_t fuse_send_read_common(struct fuse
req->out.argvar = 1;
req->out.numargs = 1;
req->out.args[0].size = count;
- request_send(fc, req);
- return req->out.args[0].size;
}

static size_t fuse_send_read(struct fuse_req *req, struct file *file,
struct inode *inode, loff_t pos, size_t count)
{
- return fuse_send_read_common(req, file, inode, pos, count, 0);
+ struct fuse_conn *fc = get_fuse_conn(inode);
+ fuse_read_fill(req, file, inode, pos, count, FUSE_READ);
+ request_send(fc, req);
+ return req->out.args[0].size;
}

static int fuse_readpage(struct file *file, struct page *page)
Index: linux/fs/fuse/fuse_i.h
===================================================================
--- linux.orig/fs/fuse/fuse_i.h 2006-01-14 00:45:13.000000000 +0100
+++ linux/fs/fuse/fuse_i.h 2006-01-14 00:48:17.000000000 +0100
@@ -169,6 +169,7 @@ struct fuse_req {
struct fuse_release_in release_in;
struct fuse_init_in init_in;
struct fuse_init_out init_out;
+ struct fuse_read_in read_in;
} misc;

/** page vector */
@@ -354,11 +355,10 @@ void fuse_send_forget(struct fuse_conn *
unsigned long nodeid, u64 nlookup);

/**
- * Send READ or READDIR request
+ * Initialize READ or READDIR request
*/
-size_t fuse_send_read_common(struct fuse_req *req, struct file *file,
- struct inode *inode, loff_t pos, size_t count,
- int isdir);
+void fuse_read_fill(struct fuse_req *req, struct file *file,
+ struct inode *inode, loff_t pos, size_t count, int opcode);

/**
* Send OPEN or OPENDIR request
--
-
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