[PATCH] Vectorize aio_read/aio_write fileop methods

This patch vectorizes aio_read() and aio_write() methods to prepare for
collapsing all aio & vectored operations into one interface - which is
aio_read()/aio_write().

Signed-off-by: Badari Pulavarty <pbadari@us.ibm.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Cc: Michael Holzheu <HOLZHEU@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

3 files changed, 13 insertions, 9 deletions

diff --git a/include/linux/aio.h b/include/linux/aio.h
index 8a0193385a9b..58349e58b749 100644
--- a/include/linux/aio.h
+++ b/include/linux/aio.h
@@ -4,6 +4,7 @@
 #include <linux/list.h>
 #include <linux/workqueue.h>
 #include <linux/aio_abi.h>
+#include <linux/uio.h>
 
 #include <asm/atomic.h>
 
@@ -112,6 +113,7 @@ struct kiocb {
         long                    ki_retried;     /* just for testing */
         long                    ki_kicked;      /* just for testing */
         long                    ki_queued;      /* just for testing */
+        struct iovec            ki_inline_vec;  /* inline vector */
 
         struct list_head        ki_list;        /* the aio core uses this
                                                  * for cancellation */
diff --git a/include/linux/fs.h b/include/linux/fs.h
index 5baf3a153403..257bae16f545 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -1097,9 +1097,9 @@ struct file_operations {
         struct module *owner;
         loff_t (*llseek) (struct file *, loff_t, int);
         ssize_t (*read) (struct file *, char __user *, size_t, loff_t *);
-        ssize_t (*aio_read) (struct kiocb *, char __user *, size_t, loff_t);
         ssize_t (*write) (struct file *, const char __user *, size_t, loff_t *);
-        ssize_t (*aio_write) (struct kiocb *, const char __user *, size_t, loff_t);
+        ssize_t (*aio_read) (struct kiocb *, const struct iovec *, unsigned long, loff_t);
+        ssize_t (*aio_write) (struct kiocb *, const struct iovec *, unsigned long, loff_t);
         int (*readdir) (struct file *, void *, filldir_t);
         unsigned int (*poll) (struct file *, struct poll_table_struct *);
         int (*ioctl) (struct inode *, struct file *, unsigned int, unsigned long);
@@ -1704,11 +1704,11 @@ extern int file_send_actor(read_descriptor_t * desc, struct page *page, unsigned
 extern ssize_t generic_file_read(struct file *, char __user *, size_t, loff_t *);
 int generic_write_checks(struct file *file, loff_t *pos, size_t *count, int isblk);
 extern ssize_t generic_file_write(struct file *, const char __user *, size_t, loff_t *);
-extern ssize_t generic_file_aio_read(struct kiocb *, char __user *, size_t, loff_t);
+extern ssize_t generic_file_aio_read(struct kiocb *, const struct iovec *, unsigned long, loff_t);
 extern ssize_t __generic_file_aio_read(struct kiocb *, const struct iovec *, unsigned long, loff_t *);
-extern ssize_t generic_file_aio_write(struct kiocb *, const char __user *, size_t, loff_t);
+extern ssize_t generic_file_aio_write(struct kiocb *, const struct iovec *, unsigned long, loff_t);
 extern ssize_t generic_file_aio_write_nolock(struct kiocb *, const struct iovec *,
-                unsigned long, loff_t *);
+                unsigned long, loff_t);
 extern ssize_t generic_file_direct_write(struct kiocb *, const struct iovec *,
                 unsigned long *, loff_t, loff_t *, size_t, size_t);
 extern ssize_t generic_file_buffered_write(struct kiocb *, const struct iovec *,
diff --git a/include/linux/nfs_fs.h b/include/linux/nfs_fs.h
index 98c9b9f667a5..76ff54846ada 100644
--- a/include/linux/nfs_fs.h
+++ b/include/linux/nfs_fs.h
@@ -367,10 +367,12 @@ extern int nfs3_removexattr (struct dentry *, const char *name);
  */
 extern ssize_t nfs_direct_IO(int, struct kiocb *, const struct iovec *, loff_t,
                         unsigned long);
-extern ssize_t nfs_file_direct_read(struct kiocb *iocb, char __user *buf,
-                        size_t count, loff_t pos);
-extern ssize_t nfs_file_direct_write(struct kiocb *iocb, const char __user *buf,
-                        size_t count, loff_t pos);
+extern ssize_t nfs_file_direct_read(struct kiocb *iocb,
+                        const struct iovec *iov, unsigned long nr_segs,
+                        loff_t pos);
+extern ssize_t nfs_file_direct_write(struct kiocb *iocb,
+                        const struct iovec *iov, unsigned long nr_segs,
+                        loff_t pos);
 
 /*
  * linux/fs/nfs/dir.c