[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>
diff --git a/arch/s390/hypfs/inode.c b/arch/s390/hypfs/inode.c
index 813fc21..cd702ae 100644
--- a/arch/s390/hypfs/inode.c
+++ b/arch/s390/hypfs/inode.c
@@ -134,12 +134,20 @@
return 0;
}
-static ssize_t hypfs_aio_read(struct kiocb *iocb, __user char *buf,
- size_t count, loff_t offset)
+static ssize_t hypfs_aio_read(struct kiocb *iocb, const struct iovec *iov,
+ unsigned long nr_segs, loff_t offset)
{
char *data;
size_t len;
struct file *filp = iocb->ki_filp;
+ /* XXX: temporary */
+ char __user *buf = iov[0].iov_base;
+ size_t count = iov[0].iov_len;
+
+ if (nr_segs != 1) {
+ count = -EINVAL;
+ goto out;
+ }
data = filp->private_data;
len = strlen(data);
@@ -158,12 +166,13 @@
out:
return count;
}
-static ssize_t hypfs_aio_write(struct kiocb *iocb, const char __user *buf,
- size_t count, loff_t pos)
+static ssize_t hypfs_aio_write(struct kiocb *iocb, const struct iovec *iov,
+ unsigned long nr_segs, loff_t offset)
{
int rc;
struct super_block *sb;
struct hypfs_sb_info *fs_info;
+ size_t count = iov_length(iov, nr_segs);
sb = iocb->ki_filp->f_dentry->d_inode->i_sb;
fs_info = sb->s_fs_info;