[PATCH V5 18/30] fs: add read_iter and write_iter to several file systems

[PATCH V5 18/30] fs: add read_iter and write_iter to several file systems

[Dave Kleikamp]

These are the simple ones.

File systems that use generic_file_aio_read() and generic_file_aio_write()
can trivially support generic_file_read_iter() and generic_file_write_iter().

This patch adds those file_operations for 9p, adfs, affs, bfs, exofs, ext2,
ext3, fat, f2fs, hfs, hfsplus, hostfs, hpfs, jfs, jffs2, logfs, minix, nilfs2,
omfs, ramfs, reiserfs, romfs, sysv, and ufs.

Signed-off-by: Dave Kleikamp <dave.kleikamp@oracle.com>
Cc: Zach Brown <zab@zabbo.net>
Cc: v9fs-developer@lists.sourceforge.net
Cc: Tigran A. Aivazian <tigran@aivazian.fsnet.co.uk>
Cc: Jan Kara <jack@suse.cz>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Andreas Dilger <adilger.kernel@dilger.ca>
Cc: linux-ext4@vger.kernel.org
Cc: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Cc: Boaz Harrosh <bharrosh@panasas.com>
Cc: Benny Halevy <bhalevy@tonian.com>
Cc: osd-dev@open-osd.org
Cc: Jeff Dike <jdike@addtoit.com>
Cc: Richard Weinberger <richard@nod.at>
Cc: user-mode-linux-devel@lists.sourceforge.net
Cc: Mikulas Patocka <mikulas@artax.karlin.mff.cuni.cz>
Cc: jfs-discussion@lists.sourceforge.net
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: linux-mtd@lists.infradead.org
Cc: Joern Engel <joern@logfs.org>
Cc: Prasad Joshi <prasadjoshi.linux@gmail.com>
Cc: logfs@logfs.org
Cc: linux-nilfs@vger.kernel.org
Cc: Bob Copeland <me@bobcopeland.com>
Cc: linux-karma-devel@lists.sourceforge.net
Cc: reiserfs-devel@vger.kernel.org
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Evgeniy Dushistov <dushistov@mail.ru>
---
 fs/9p/vfs_addr.c        | 4 ++--
 fs/9p/vfs_file.c        | 8 ++++----
 fs/adfs/file.c          | 4 ++--
 fs/affs/file.c          | 4 ++--
 fs/bfs/file.c           | 4 ++--
 fs/exofs/file.c         | 4 ++--
 fs/ext2/file.c          | 4 ++--
 fs/ext3/file.c          | 4 ++--
 fs/f2fs/file.c          | 4 ++--
 fs/fat/file.c           | 4 ++--
 fs/hfs/inode.c          | 4 ++--
 fs/hfsplus/inode.c      | 4 ++--
 fs/hostfs/hostfs_kern.c | 4 ++--
 fs/hpfs/file.c          | 4 ++--
 fs/jffs2/file.c         | 8 ++++----
 fs/jfs/file.c           | 4 ++--
 fs/logfs/file.c         | 4 ++--
 fs/minix/file.c         | 4 ++--
 fs/nilfs2/file.c        | 4 ++--
 fs/omfs/file.c          | 4 ++--
 fs/ramfs/file-mmu.c     | 4 ++--
 fs/ramfs/file-nommu.c   | 4 ++--
 fs/reiserfs/file.c      | 4 ++--
 fs/romfs/mmap-nommu.c   | 2 +-
 fs/sysv/file.c          | 4 ++--
 fs/ufs/file.c           | 4 ++--
 26 files changed, 55 insertions(+), 55 deletions(-)

diff --git a/fs/9p/vfs_addr.c b/fs/9p/vfs_addr.c
index e70f239..01c0673 100644
--- a/fs/9p/vfs_addr.c
+++ b/fs/9p/vfs_addr.c
@@ -249,8 +249,8 @@ static int v9fs_launder_page(struct page *page)
  * the VFS gets them, so this method should never be called.
  *
  * Direct IO is not 'yet' supported in the cached mode. Hence when
- * this routine is called through generic_file_aio_read(), the read/write fails
- * with an error.
+ * this routine is called through generic_file_read_iter(), the read/write
+ * fails with an error.
  *
  */
 static ssize_t
diff --git a/fs/9p/vfs_file.c b/fs/9p/vfs_file.c
index c2483e9..2e9441d 100644
--- a/fs/9p/vfs_file.c
+++ b/fs/9p/vfs_file.c
@@ -746,8 +746,8 @@ const struct file_operations v9fs_cached_file_operations = {
 	.llseek = generic_file_llseek,
 	.read = v9fs_cached_file_read,
 	.write = v9fs_cached_file_write,
-	.aio_read = generic_file_aio_read,
-	.aio_write = generic_file_aio_write,
+	.read_iter = generic_file_read_iter,
+	.write_iter = generic_file_write_iter,
 	.open = v9fs_file_open,
 	.release = v9fs_dir_release,
 	.lock = v9fs_file_lock,
@@ -759,8 +759,8 @@ const struct file_operations v9fs_cached_file_operations_dotl = {
 	.llseek = generic_file_llseek,
 	.read = v9fs_cached_file_read,
 	.write = v9fs_cached_file_write,
-	.aio_read = generic_file_aio_read,
-	.aio_write = generic_file_aio_write,
+	.read_iter = generic_file_read_iter,
+	.write_iter = generic_file_write_iter,
 	.open = v9fs_file_open,
 	.release = v9fs_dir_release,
 	.lock = v9fs_file_lock_dotl,
diff --git a/fs/adfs/file.c b/fs/adfs/file.c
index a36da53..da1e021 100644
--- a/fs/adfs/file.c
+++ b/fs/adfs/file.c
@@ -24,11 +24,11 @@
 const struct file_operations adfs_file_operations = {
 	.llseek		= generic_file_llseek,
 	.read		= do_sync_read,
-	.aio_read	= generic_file_aio_read,
+	.read_iter	= generic_file_read_iter,
 	.mmap		= generic_file_mmap,
 	.fsync		= generic_file_fsync,
 	.write		= do_sync_write,
-	.aio_write	= generic_file_aio_write,
+	.write_iter	= generic_file_write_iter,
 	.splice_read	= generic_file_splice_read,
 };
 
diff --git a/fs/affs/file.c b/fs/affs/file.c
index af3261b..d09a2db 100644
--- a/fs/affs/file.c
+++ b/fs/affs/file.c
@@ -28,9 +28,9 @@ static int affs_file_release(struct inode *inode, struct file *filp);
 const struct file_operations affs_file_operations = {
 	.llseek		= generic_file_llseek,
 	.read		= do_sync_read,
-	.aio_read	= generic_file_aio_read,
+	.read_iter	= generic_file_read_iter,
 	.write		= do_sync_write,
-	.aio_write	= generic_file_aio_write,
+	.write_iter	= generic_file_write_iter,
 	.mmap		= generic_file_mmap,
 	.open		= affs_file_open,
 	.release	= affs_file_release,
diff --git a/fs/bfs/file.c b/fs/bfs/file.c
index ad3ea14..3d14806 100644
--- a/fs/bfs/file.c
+++ b/fs/bfs/file.c
@@ -24,9 +24,9 @@
 const struct file_operations bfs_file_operations = {
 	.llseek 	= generic_file_llseek,
 	.read		= do_sync_read,
-	.aio_read	= generic_file_aio_read,
+	.read_iter	= generic_file_read_iter,
 	.write		= do_sync_write,
-	.aio_write	= generic_file_aio_write,
+	.write_iter	= generic_file_write_iter,
 	.mmap		= generic_file_mmap,
 	.splice_read	= generic_file_splice_read,
 };
diff --git a/fs/exofs/file.c b/fs/exofs/file.c
index 491c6c0..20564f8a 100644
--- a/fs/exofs/file.c
+++ b/fs/exofs/file.c
@@ -69,8 +69,8 @@ const struct file_operations exofs_file_operations = {
 	.llseek		= generic_file_llseek,
 	.read		= do_sync_read,
 	.write		= do_sync_write,
-	.aio_read	= generic_file_aio_read,
-	.aio_write	= generic_file_aio_write,
+	.read_iter	= generic_file_read_iter,
+	.write_iter	= generic_file_write_iter,
 	.mmap		= generic_file_mmap,
 	.open		= generic_file_open,
 	.release	= exofs_release_file,
diff --git a/fs/ext2/file.c b/fs/ext2/file.c
index a5b3a5d..6af043b 100644
--- a/fs/ext2/file.c
+++ b/fs/ext2/file.c
@@ -64,8 +64,8 @@ const struct file_operations ext2_file_operations = {
 	.llseek		= generic_file_llseek,
 	.read		= do_sync_read,
 	.write		= do_sync_write,
-	.aio_read	= generic_file_aio_read,
-	.aio_write	= generic_file_aio_write,
+	.read_iter	= generic_file_read_iter,
+	.write_iter	= generic_file_write_iter,
 	.unlocked_ioctl = ext2_ioctl,
 #ifdef CONFIG_COMPAT
 	.compat_ioctl	= ext2_compat_ioctl,
diff --git a/fs/ext3/file.c b/fs/ext3/file.c
index 25cb413..a796771 100644
--- a/fs/ext3/file.c
+++ b/fs/ext3/file.c
@@ -52,8 +52,8 @@ const struct file_operations ext3_file_operations = {
 	.llseek		= generic_file_llseek,
 	.read		= do_sync_read,
 	.write		= do_sync_write,
-	.aio_read	= generic_file_aio_read,
-	.aio_write	= generic_file_aio_write,
+	.read_iter	= generic_file_read_iter,
+	.write_iter	= generic_file_write_iter,
 	.unlocked_ioctl	= ext3_ioctl,
 #ifdef CONFIG_COMPAT
 	.compat_ioctl	= ext3_compat_ioctl,
diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
index f9e085d..86d9c4b 100644
--- a/fs/f2fs/file.c
+++ b/fs/f2fs/file.c
@@ -624,8 +624,8 @@ const struct file_operations f2fs_file_operations = {
 	.llseek		= generic_file_llseek,
 	.read		= do_sync_read,
 	.write		= do_sync_write,
-	.aio_read	= generic_file_aio_read,
-	.aio_write	= generic_file_aio_write,
+	.read_iter	= generic_file_read_iter,
+	.write_iter	= generic_file_write_iter,
 	.open		= generic_file_open,
 	.mmap		= f2fs_file_mmap,
 	.fsync		= f2fs_sync_file,
diff --git a/fs/fat/file.c b/fs/fat/file.c
index a62e0ec..92d587b 100644
--- a/fs/fat/file.c
+++ b/fs/fat/file.c
@@ -164,8 +164,8 @@ const struct file_operations fat_file_operations = {
 	.llseek		= generic_file_llseek,
 	.read		= do_sync_read,
 	.write		= do_sync_write,
-	.aio_read	= generic_file_aio_read,
-	.aio_write	= generic_file_aio_write,
+	.read_iter	= generic_file_read_iter,
+	.write_iter	= generic_file_write_iter,
 	.mmap		= generic_file_mmap,
 	.release	= fat_file_release,
 	.unlocked_ioctl	= fat_generic_ioctl,
diff --git a/fs/hfs/inode.c b/fs/hfs/inode.c
index 2a87ba4..0db0679 100644
--- a/fs/hfs/inode.c
+++ b/fs/hfs/inode.c
@@ -666,9 +666,9 @@ static int hfs_file_fsync(struct file *filp, loff_t start, loff_t end,
 static const struct file_operations hfs_file_operations = {
 	.llseek		= generic_file_llseek,
 	.read		= do_sync_read,
-	.aio_read	= generic_file_aio_read,
+	.read_iter	= generic_file_read_iter,
 	.write		= do_sync_write,
-	.aio_write	= generic_file_aio_write,
+	.write_iter	= generic_file_write_iter,
 	.mmap		= generic_file_mmap,
 	.splice_read	= generic_file_splice_read,
 	.fsync		= hfs_file_fsync,
diff --git a/fs/hfsplus/inode.c b/fs/hfsplus/inode.c
index c87b26c..9b8cdb6 100644
--- a/fs/hfsplus/inode.c
+++ b/fs/hfsplus/inode.c
@@ -373,9 +373,9 @@ static const struct inode_operations hfsplus_file_inode_operations = {
 static const struct file_operations hfsplus_file_operations = {
 	.llseek		= generic_file_llseek,
 	.read		= do_sync_read,
-	.aio_read	= generic_file_aio_read,
+	.read_iter	= generic_file_read_iter,
 	.write		= do_sync_write,
-	.aio_write	= generic_file_aio_write,
+	.write_iter	= generic_file_write_iter,
 	.mmap		= generic_file_mmap,
 	.splice_read	= generic_file_splice_read,
 	.fsync		= hfsplus_file_fsync,
diff --git a/fs/hostfs/hostfs_kern.c b/fs/hostfs/hostfs_kern.c
index 457addc..4593a9a 100644
--- a/fs/hostfs/hostfs_kern.c
+++ b/fs/hostfs/hostfs_kern.c
@@ -382,8 +382,8 @@ static const struct file_operations hostfs_file_fops = {
 	.llseek		= generic_file_llseek,
 	.read		= do_sync_read,
 	.splice_read	= generic_file_splice_read,
-	.aio_read	= generic_file_aio_read,
-	.aio_write	= generic_file_aio_write,
+	.read_iter	= generic_file_read_iter,
+	.write_iter	= generic_file_write_iter,
 	.write		= do_sync_write,
 	.mmap		= generic_file_mmap,
 	.open		= hostfs_file_open,
diff --git a/fs/hpfs/file.c b/fs/hpfs/file.c
index fbfe2df..efc8cd9 100644
--- a/fs/hpfs/file.c
+++ b/fs/hpfs/file.c
@@ -162,9 +162,9 @@ const struct file_operations hpfs_file_ops =
 {
 	.llseek		= generic_file_llseek,
 	.read		= do_sync_read,
-	.aio_read	= generic_file_aio_read,
+	.read_iter	= generic_file_read_iter,
 	.write		= hpfs_file_write,
-	.aio_write	= generic_file_aio_write,
+	.write_iter	= generic_file_write_iter,
 	.mmap		= generic_file_mmap,
 	.release	= hpfs_file_release,
 	.fsync		= hpfs_file_fsync,
diff --git a/fs/jffs2/file.c b/fs/jffs2/file.c
index 1506673..1d7ab8b 100644
--- a/fs/jffs2/file.c
+++ b/fs/jffs2/file.c
@@ -51,10 +51,10 @@ const struct file_operations jffs2_file_operations =
 {
 	.llseek =	generic_file_llseek,
 	.open =		generic_file_open,
- 	.read =		do_sync_read,
- 	.aio_read =	generic_file_aio_read,
- 	.write =	do_sync_write,
- 	.aio_write =	generic_file_aio_write,
+	.read =		do_sync_read,
+	.read_iter =	generic_file_read_iter,
+	.write =	do_sync_write,
+	.write_iter =	generic_file_write_iter,
 	.unlocked_ioctl=jffs2_ioctl,
 	.mmap =		generic_file_readonly_mmap,
 	.fsync =	jffs2_fsync,
diff --git a/fs/jfs/file.c b/fs/jfs/file.c
index dd7442c..040b6c7 100644
--- a/fs/jfs/file.c
+++ b/fs/jfs/file.c
@@ -151,8 +151,8 @@ const struct file_operations jfs_file_operations = {
 	.llseek		= generic_file_llseek,
 	.write		= do_sync_write,
 	.read		= do_sync_read,
-	.aio_read	= generic_file_aio_read,
-	.aio_write	= generic_file_aio_write,
+	.read_iter	= generic_file_read_iter,
+	.write_iter	= generic_file_write_iter,
 	.mmap		= generic_file_mmap,
 	.splice_read	= generic_file_splice_read,
 	.splice_write	= generic_file_splice_write,
diff --git a/fs/logfs/file.c b/fs/logfs/file.c
index 3886cde..ca35c88 100644
--- a/fs/logfs/file.c
+++ b/fs/logfs/file.c
@@ -263,8 +263,8 @@ const struct inode_operations logfs_reg_iops = {
 };
 
 const struct file_operations logfs_reg_fops = {
-	.aio_read	= generic_file_aio_read,
-	.aio_write	= generic_file_aio_write,
+	.read_iter	= generic_file_read_iter,
+	.write_iter	= generic_file_write_iter,
 	.fsync		= logfs_fsync,
 	.unlocked_ioctl	= logfs_ioctl,
 	.llseek		= generic_file_llseek,
diff --git a/fs/minix/file.c b/fs/minix/file.c
index adc6f54..346d8f37 100644
--- a/fs/minix/file.c
+++ b/fs/minix/file.c
@@ -15,9 +15,9 @@
 const struct file_operations minix_file_operations = {
 	.llseek		= generic_file_llseek,
 	.read		= do_sync_read,
-	.aio_read	= generic_file_aio_read,
+	.read_iter	= generic_file_read_iter,
 	.write		= do_sync_write,
-	.aio_write	= generic_file_aio_write,
+	.write_iter	= generic_file_write_iter,
 	.mmap		= generic_file_mmap,
 	.fsync		= generic_file_fsync,
 	.splice_read	= generic_file_splice_read,
diff --git a/fs/nilfs2/file.c b/fs/nilfs2/file.c
index 6194688..3e4337e 100644
--- a/fs/nilfs2/file.c
+++ b/fs/nilfs2/file.c
@@ -153,8 +153,8 @@ const struct file_operations nilfs_file_operations = {
 	.llseek		= generic_file_llseek,
 	.read		= do_sync_read,
 	.write		= do_sync_write,
-	.aio_read	= generic_file_aio_read,
-	.aio_write	= generic_file_aio_write,
+	.read_iter	= generic_file_read_iter,
+	.write_iter	= generic_file_write_iter,
 	.unlocked_ioctl	= nilfs_ioctl,
 #ifdef CONFIG_COMPAT
 	.compat_ioctl	= nilfs_compat_ioctl,
diff --git a/fs/omfs/file.c b/fs/omfs/file.c
index e0d9b3e..badafd8 100644
--- a/fs/omfs/file.c
+++ b/fs/omfs/file.c
@@ -339,8 +339,8 @@ const struct file_operations omfs_file_operations = {
 	.llseek = generic_file_llseek,
 	.read = do_sync_read,
 	.write = do_sync_write,
-	.aio_read = generic_file_aio_read,
-	.aio_write = generic_file_aio_write,
+	.read_iter = generic_file_read_iter,
+	.write_iter = generic_file_write_iter,
 	.mmap = generic_file_mmap,
 	.fsync = generic_file_fsync,
 	.splice_read = generic_file_splice_read,
diff --git a/fs/ramfs/file-mmu.c b/fs/ramfs/file-mmu.c
index 4884ac5..c4d8572 100644
--- a/fs/ramfs/file-mmu.c
+++ b/fs/ramfs/file-mmu.c
@@ -39,9 +39,9 @@ const struct address_space_operations ramfs_aops = {
 
 const struct file_operations ramfs_file_operations = {
 	.read		= do_sync_read,
-	.aio_read	= generic_file_aio_read,
+	.read_iter	= generic_file_read_iter,
 	.write		= do_sync_write,
-	.aio_write	= generic_file_aio_write,
+	.write_iter	= generic_file_write_iter,
 	.mmap		= generic_file_mmap,
 	.fsync		= noop_fsync,
 	.splice_read	= generic_file_splice_read,
diff --git a/fs/ramfs/file-nommu.c b/fs/ramfs/file-nommu.c
index d5378d0..1d6be6c 100644
--- a/fs/ramfs/file-nommu.c
+++ b/fs/ramfs/file-nommu.c
@@ -39,9 +39,9 @@ const struct file_operations ramfs_file_operations = {
 	.mmap			= ramfs_nommu_mmap,
 	.get_unmapped_area	= ramfs_nommu_get_unmapped_area,
 	.read			= do_sync_read,
-	.aio_read		= generic_file_aio_read,
+	.read_iter		= generic_file_read_iter,
 	.write			= do_sync_write,
-	.aio_write		= generic_file_aio_write,
+	.write_iter		= generic_file_write_iter,
 	.fsync			= noop_fsync,
 	.splice_read		= generic_file_splice_read,
 	.splice_write		= generic_file_splice_write,
diff --git a/fs/reiserfs/file.c b/fs/reiserfs/file.c
index 50302d6..831703d 100644
--- a/fs/reiserfs/file.c
+++ b/fs/reiserfs/file.c
@@ -304,8 +304,8 @@ const struct file_operations reiserfs_file_operations = {
 	.open = reiserfs_file_open,
 	.release = reiserfs_file_release,
 	.fsync = reiserfs_sync_file,
-	.aio_read = generic_file_aio_read,
-	.aio_write = generic_file_aio_write,
+	.read_iter = generic_file_read_iter,
+	.write_iter = generic_file_write_iter,
 	.splice_read = generic_file_splice_read,
 	.splice_write = generic_file_splice_write,
 	.llseek = generic_file_llseek,
diff --git a/fs/romfs/mmap-nommu.c b/fs/romfs/mmap-nommu.c
index e1a7779..e34d51a 100644
--- a/fs/romfs/mmap-nommu.c
+++ b/fs/romfs/mmap-nommu.c
@@ -70,7 +70,7 @@ static int romfs_mmap(struct file *file, struct vm_area_struct *vma)
 const struct file_operations romfs_ro_fops = {
 	.llseek			= generic_file_llseek,
 	.read			= do_sync_read,
-	.aio_read		= generic_file_aio_read,
+	.read_iter		= generic_file_read_iter,
 	.splice_read		= generic_file_splice_read,
 	.mmap			= romfs_mmap,
 	.get_unmapped_area	= romfs_get_unmapped_area,
diff --git a/fs/sysv/file.c b/fs/sysv/file.c
index 9d4dc68..ff4b363 100644
--- a/fs/sysv/file.c
+++ b/fs/sysv/file.c
@@ -22,9 +22,9 @@
 const struct file_operations sysv_file_operations = {
 	.llseek		= generic_file_llseek,
 	.read		= do_sync_read,
-	.aio_read	= generic_file_aio_read,
+	.read_iter	= generic_file_read_iter,
 	.write		= do_sync_write,
-	.aio_write	= generic_file_aio_write,
+	.write_iter	= generic_file_write_iter,
 	.mmap		= generic_file_mmap,
 	.fsync		= generic_file_fsync,
 	.splice_read	= generic_file_splice_read,
diff --git a/fs/ufs/file.c b/fs/ufs/file.c
index 33afa20..e155e4c 100644
--- a/fs/ufs/file.c
+++ b/fs/ufs/file.c
@@ -36,9 +36,9 @@
 const struct file_operations ufs_file_operations = {
 	.llseek		= generic_file_llseek,
 	.read		= do_sync_read,
-	.aio_read	= generic_file_aio_read,
+	.read_iter	= generic_file_read_iter,
 	.write		= do_sync_write,
-	.aio_write	= generic_file_aio_write,
+	.write_iter	= generic_file_write_iter,
 	.mmap		= generic_file_mmap,
 	.open           = generic_file_open,
 	.fsync		= generic_file_fsync,
-- 
1.8.1


______________________________________________________
Linux MTD discussion mailing list
http://lists.infradead.org/mailman/listinfo/linux-mtd/

[PATCH V5 20/30] ext4: add support for read_iter and write_iter

[Dave Kleikamp]

use the generic_file_read_iter(), create ext4_file_write_iter() based on
ext4_file_write(), and make ext4_file_write() a wrapper around
ext4_file_write_iter().

Signed-off-by: Dave Kleikamp <dave.kleikamp@oracle.com>
Cc: Zach Brown <zab@zabbo.net>
Cc: "Theodore Ts'o" <tytso@mit.edu>
Cc: Andreas Dilger <adilger.kernel@dilger.ca>
Cc: linux-ext4@vger.kernel.org
---
 fs/ext4/file.c | 34 +++++++++++++++++-----------------
 1 file changed, 17 insertions(+), 17 deletions(-)

diff --git a/fs/ext4/file.c b/fs/ext4/file.c
index 405565a..54aa681 100644
--- a/fs/ext4/file.c
+++ b/fs/ext4/file.c
@@ -73,12 +73,11 @@ void ext4_unwritten_wait(struct inode *inode)
  * or one thread will zero the other's data, causing corruption.
  */
 static int
-ext4_unaligned_aio(struct inode *inode, const struct iovec *iov,
-		   unsigned long nr_segs, loff_t pos)
+ext4_unaligned_aio(struct inode *inode, struct iov_iter *iter, loff_t pos)
 {
 	struct super_block *sb = inode->i_sb;
 	int blockmask = sb->s_blocksize - 1;
-	size_t count = iov_length(iov, nr_segs);
+	size_t count = iov_iter_count(iter);
 	loff_t final_size = pos + count;
 
 	if (pos >= inode->i_size)
@@ -91,8 +90,8 @@ ext4_unaligned_aio(struct inode *inode, const struct iovec *iov,
 }
 
 static ssize_t
-ext4_file_dio_write(struct kiocb *iocb, const struct iovec *iov,
-		    unsigned long nr_segs, loff_t pos)
+ext4_file_dio_write(struct kiocb *iocb, struct iov_iter *iter,
+		    loff_t pos)
 {
 	struct file *file = iocb->ki_filp;
 	struct inode *inode = file->f_mapping->host;
@@ -100,11 +99,11 @@ ext4_file_dio_write(struct kiocb *iocb, const struct iovec *iov,
 	int unaligned_aio = 0;
 	ssize_t ret;
 	int overwrite = 0;
-	size_t length = iov_length(iov, nr_segs);
+	size_t length = iov_iter_count(iter);
 
 	if (ext4_test_inode_flag(inode, EXT4_INODE_EXTENTS) &&
 	    !is_sync_kiocb(iocb))
-		unaligned_aio = ext4_unaligned_aio(inode, iov, nr_segs, pos);
+		unaligned_aio = ext4_unaligned_aio(inode, iter, pos);
 
 	/* Unaligned direct AIO must be serialized; see comment above */
 	if (unaligned_aio) {
@@ -145,7 +144,7 @@ ext4_file_dio_write(struct kiocb *iocb, const struct iovec *iov,
 			overwrite = 1;
 	}
 
-	ret = __generic_file_aio_write(iocb, iov, nr_segs, &iocb->ki_pos);
+	ret = __generic_file_write_iter(iocb, iter, &iocb->ki_pos);
 	mutex_unlock(&inode->i_mutex);
 
 	if (ret > 0 || ret == -EIOCBQUEUED) {
@@ -164,8 +163,7 @@ ext4_file_dio_write(struct kiocb *iocb, const struct iovec *iov,
 }
 
 static ssize_t
-ext4_file_write(struct kiocb *iocb, const struct iovec *iov,
-		unsigned long nr_segs, loff_t pos)
+ext4_file_write_iter(struct kiocb *iocb, struct iov_iter *iter, loff_t pos)
 {
 	struct inode *inode = iocb->ki_filp->f_path.dentry->d_inode;
 	ssize_t ret;
@@ -177,22 +175,24 @@ ext4_file_write(struct kiocb *iocb, const struct iovec *iov,
 
 	if (!(ext4_test_inode_flag(inode, EXT4_INODE_EXTENTS))) {
 		struct ext4_sb_info *sbi = EXT4_SB(inode->i_sb);
-		size_t length = iov_length(iov, nr_segs);
+		size_t length = iov_iter_count(iter);
 
 		if ((pos > sbi->s_bitmap_maxbytes ||
 		    (pos == sbi->s_bitmap_maxbytes && length > 0)))
 			return -EFBIG;
 
 		if (pos + length > sbi->s_bitmap_maxbytes) {
-			nr_segs = iov_shorten((struct iovec *)iov, nr_segs,
-					      sbi->s_bitmap_maxbytes - pos);
+			ret = iov_iter_shorten(iter,
+					       sbi->s_bitmap_maxbytes - pos);
+			if (ret)
+				return ret;
 		}
 	}
 
 	if (unlikely(iocb->ki_filp->f_flags & O_DIRECT))
-		ret = ext4_file_dio_write(iocb, iov, nr_segs, pos);
+		ret = ext4_file_dio_write(iocb, iter, pos);
 	else
-		ret = generic_file_aio_write(iocb, iov, nr_segs, pos);
+		ret = generic_file_write_iter(iocb, iter, pos);
 
 	return ret;
 }
@@ -630,8 +630,8 @@ const struct file_operations ext4_file_operations = {
 	.llseek		= ext4_llseek,
 	.read		= do_sync_read,
 	.write		= do_sync_write,
-	.aio_read	= generic_file_aio_read,
-	.aio_write	= ext4_file_write,
+	.read_iter	= generic_file_read_iter,
+	.write_iter	= ext4_file_write_iter,
 	.unlocked_ioctl = ext4_ioctl,
 #ifdef CONFIG_COMPAT
 	.compat_ioctl	= ext4_compat_ioctl,
-- 
1.8.1

Re: [PATCH V5 18/30] fs: add read_iter and write_iter to several file systems

[Boaz Harrosh]

On 01/09/2013 09:58 PM, Dave Kleikamp wrote:
> These are the simple ones.
> 
> File systems that use generic_file_aio_read() and generic_file_aio_write()
> can trivially support generic_file_read_iter() and generic_file_write_iter().
> 
> This patch adds those file_operations for 9p, adfs, affs, bfs, exofs, ext2,
> ext3, fat, f2fs, hfs, hfsplus, hostfs, hpfs, jfs, jffs2, logfs, minix, nilfs2,
> omfs, ramfs, reiserfs, romfs, sysv, and ufs.
> 
> Signed-off-by: Dave Kleikamp <dave.kleikamp@oracle.com>
> Cc: Zach Brown <zab@zabbo.net>
> Cc: v9fs-developer@lists.sourceforge.net
> Cc: Tigran A. Aivazian <tigran@aivazian.fsnet.co.uk>
> Cc: Jan Kara <jack@suse.cz>
> Cc: Andrew Morton <akpm@linux-foundation.org>
> Cc: Andreas Dilger <adilger.kernel@dilger.ca>
> Cc: linux-ext4@vger.kernel.org
> Cc: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>

Thanks looks good.
ACK-by: Boaz Harrosh <bharrosh@panasas.com>

> Cc: Boaz Harrosh <bharrosh@panasas.com>
> Cc: Benny Halevy <bhalevy@tonian.com>
> Cc: osd-dev@open-osd.org

> Cc: Jeff Dike <jdike@addtoit.com>
> Cc: Richard Weinberger <richard@nod.at>
> Cc: user-mode-linux-devel@lists.sourceforge.net
> Cc: Mikulas Patocka <mikulas@artax.karlin.mff.cuni.cz>
> Cc: jfs-discussion@lists.sourceforge.net
> Cc: David Woodhouse <dwmw2@infradead.org>
> Cc: linux-mtd@lists.infradead.org
> Cc: Joern Engel <joern@logfs.org>
> Cc: Prasad Joshi <prasadjoshi.linux@gmail.com>
> Cc: logfs@logfs.org
> Cc: linux-nilfs@vger.kernel.org
> Cc: Bob Copeland <me@bobcopeland.com>
> Cc: linux-karma-devel@lists.sourceforge.net
> Cc: reiserfs-devel@vger.kernel.org
> Cc: Christoph Hellwig <hch@infradead.org>
> Cc: Evgeniy Dushistov <dushistov@mail.ru>
> ---
>  fs/9p/vfs_addr.c        | 4 ++--
>  fs/9p/vfs_file.c        | 8 ++++----
>  fs/adfs/file.c          | 4 ++--
>  fs/affs/file.c          | 4 ++--
>  fs/bfs/file.c           | 4 ++--
>  fs/exofs/file.c         | 4 ++--
>  fs/ext2/file.c          | 4 ++--
>  fs/ext3/file.c          | 4 ++--
>  fs/f2fs/file.c          | 4 ++--
>  fs/fat/file.c           | 4 ++--
>  fs/hfs/inode.c          | 4 ++--
>  fs/hfsplus/inode.c      | 4 ++--
>  fs/hostfs/hostfs_kern.c | 4 ++--
>  fs/hpfs/file.c          | 4 ++--
>  fs/jffs2/file.c         | 8 ++++----
>  fs/jfs/file.c           | 4 ++--
>  fs/logfs/file.c         | 4 ++--
>  fs/minix/file.c         | 4 ++--
>  fs/nilfs2/file.c        | 4 ++--
>  fs/omfs/file.c          | 4 ++--
>  fs/ramfs/file-mmu.c     | 4 ++--
>  fs/ramfs/file-nommu.c   | 4 ++--
>  fs/reiserfs/file.c      | 4 ++--
>  fs/romfs/mmap-nommu.c   | 2 +-
>  fs/sysv/file.c          | 4 ++--
>  fs/ufs/file.c           | 4 ++--
>  26 files changed, 55 insertions(+), 55 deletions(-)
> 
> diff --git a/fs/9p/vfs_addr.c b/fs/9p/vfs_addr.c
> index e70f239..01c0673 100644
> --- a/fs/9p/vfs_addr.c
> +++ b/fs/9p/vfs_addr.c
> @@ -249,8 +249,8 @@ static int v9fs_launder_page(struct page *page)
>   * the VFS gets them, so this method should never be called.
>   *
>   * Direct IO is not 'yet' supported in the cached mode. Hence when
> - * this routine is called through generic_file_aio_read(), the read/write fails
> - * with an error.
> + * this routine is called through generic_file_read_iter(), the read/write
> + * fails with an error.
>   *
>   */
>  static ssize_t
> diff --git a/fs/9p/vfs_file.c b/fs/9p/vfs_file.c
> index c2483e9..2e9441d 100644
> --- a/fs/9p/vfs_file.c
> +++ b/fs/9p/vfs_file.c
> @@ -746,8 +746,8 @@ const struct file_operations v9fs_cached_file_operations = {
>  	.llseek = generic_file_llseek,
>  	.read = v9fs_cached_file_read,
>  	.write = v9fs_cached_file_write,
> -	.aio_read = generic_file_aio_read,
> -	.aio_write = generic_file_aio_write,
> +	.read_iter = generic_file_read_iter,
> +	.write_iter = generic_file_write_iter,
>  	.open = v9fs_file_open,
>  	.release = v9fs_dir_release,
>  	.lock = v9fs_file_lock,
> @@ -759,8 +759,8 @@ const struct file_operations v9fs_cached_file_operations_dotl = {
>  	.llseek = generic_file_llseek,
>  	.read = v9fs_cached_file_read,
>  	.write = v9fs_cached_file_write,
> -	.aio_read = generic_file_aio_read,
> -	.aio_write = generic_file_aio_write,
> +	.read_iter = generic_file_read_iter,
> +	.write_iter = generic_file_write_iter,
>  	.open = v9fs_file_open,
>  	.release = v9fs_dir_release,
>  	.lock = v9fs_file_lock_dotl,
> diff --git a/fs/adfs/file.c b/fs/adfs/file.c
> index a36da53..da1e021 100644
> --- a/fs/adfs/file.c
> +++ b/fs/adfs/file.c
> @@ -24,11 +24,11 @@
>  const struct file_operations adfs_file_operations = {
>  	.llseek		= generic_file_llseek,
>  	.read		= do_sync_read,
> -	.aio_read	= generic_file_aio_read,
> +	.read_iter	= generic_file_read_iter,
>  	.mmap		= generic_file_mmap,
>  	.fsync		= generic_file_fsync,
>  	.write		= do_sync_write,
> -	.aio_write	= generic_file_aio_write,
> +	.write_iter	= generic_file_write_iter,
>  	.splice_read	= generic_file_splice_read,
>  };
>  
> diff --git a/fs/affs/file.c b/fs/affs/file.c
> index af3261b..d09a2db 100644
> --- a/fs/affs/file.c
> +++ b/fs/affs/file.c
> @@ -28,9 +28,9 @@ static int affs_file_release(struct inode *inode, struct file *filp);
>  const struct file_operations affs_file_operations = {
>  	.llseek		= generic_file_llseek,
>  	.read		= do_sync_read,
> -	.aio_read	= generic_file_aio_read,
> +	.read_iter	= generic_file_read_iter,
>  	.write		= do_sync_write,
> -	.aio_write	= generic_file_aio_write,
> +	.write_iter	= generic_file_write_iter,
>  	.mmap		= generic_file_mmap,
>  	.open		= affs_file_open,
>  	.release	= affs_file_release,
> diff --git a/fs/bfs/file.c b/fs/bfs/file.c
> index ad3ea14..3d14806 100644
> --- a/fs/bfs/file.c
> +++ b/fs/bfs/file.c
> @@ -24,9 +24,9 @@
>  const struct file_operations bfs_file_operations = {
>  	.llseek 	= generic_file_llseek,
>  	.read		= do_sync_read,
> -	.aio_read	= generic_file_aio_read,
> +	.read_iter	= generic_file_read_iter,
>  	.write		= do_sync_write,
> -	.aio_write	= generic_file_aio_write,
> +	.write_iter	= generic_file_write_iter,
>  	.mmap		= generic_file_mmap,
>  	.splice_read	= generic_file_splice_read,
>  };
> diff --git a/fs/exofs/file.c b/fs/exofs/file.c
> index 491c6c0..20564f8a 100644
> --- a/fs/exofs/file.c
> +++ b/fs/exofs/file.c
> @@ -69,8 +69,8 @@ const struct file_operations exofs_file_operations = {
>  	.llseek		= generic_file_llseek,
>  	.read		= do_sync_read,
>  	.write		= do_sync_write,
> -	.aio_read	= generic_file_aio_read,
> -	.aio_write	= generic_file_aio_write,
> +	.read_iter	= generic_file_read_iter,
> +	.write_iter	= generic_file_write_iter,
>  	.mmap		= generic_file_mmap,
>  	.open		= generic_file_open,
>  	.release	= exofs_release_file,
> diff --git a/fs/ext2/file.c b/fs/ext2/file.c
> index a5b3a5d..6af043b 100644
> --- a/fs/ext2/file.c
> +++ b/fs/ext2/file.c
> @@ -64,8 +64,8 @@ const struct file_operations ext2_file_operations = {
>  	.llseek		= generic_file_llseek,
>  	.read		= do_sync_read,
>  	.write		= do_sync_write,
> -	.aio_read	= generic_file_aio_read,
> -	.aio_write	= generic_file_aio_write,
> +	.read_iter	= generic_file_read_iter,
> +	.write_iter	= generic_file_write_iter,
>  	.unlocked_ioctl = ext2_ioctl,
>  #ifdef CONFIG_COMPAT
>  	.compat_ioctl	= ext2_compat_ioctl,
> diff --git a/fs/ext3/file.c b/fs/ext3/file.c
> index 25cb413..a796771 100644
> --- a/fs/ext3/file.c
> +++ b/fs/ext3/file.c
> @@ -52,8 +52,8 @@ const struct file_operations ext3_file_operations = {
>  	.llseek		= generic_file_llseek,
>  	.read		= do_sync_read,
>  	.write		= do_sync_write,
> -	.aio_read	= generic_file_aio_read,
> -	.aio_write	= generic_file_aio_write,
> +	.read_iter	= generic_file_read_iter,
> +	.write_iter	= generic_file_write_iter,
>  	.unlocked_ioctl	= ext3_ioctl,
>  #ifdef CONFIG_COMPAT
>  	.compat_ioctl	= ext3_compat_ioctl,
> diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
> index f9e085d..86d9c4b 100644
> --- a/fs/f2fs/file.c
> +++ b/fs/f2fs/file.c
> @@ -624,8 +624,8 @@ const struct file_operations f2fs_file_operations = {
>  	.llseek		= generic_file_llseek,
>  	.read		= do_sync_read,
>  	.write		= do_sync_write,
> -	.aio_read	= generic_file_aio_read,
> -	.aio_write	= generic_file_aio_write,
> +	.read_iter	= generic_file_read_iter,
> +	.write_iter	= generic_file_write_iter,
>  	.open		= generic_file_open,
>  	.mmap		= f2fs_file_mmap,
>  	.fsync		= f2fs_sync_file,
> diff --git a/fs/fat/file.c b/fs/fat/file.c
> index a62e0ec..92d587b 100644
> --- a/fs/fat/file.c
> +++ b/fs/fat/file.c
> @@ -164,8 +164,8 @@ const struct file_operations fat_file_operations = {
>  	.llseek		= generic_file_llseek,
>  	.read		= do_sync_read,
>  	.write		= do_sync_write,
> -	.aio_read	= generic_file_aio_read,
> -	.aio_write	= generic_file_aio_write,
> +	.read_iter	= generic_file_read_iter,
> +	.write_iter	= generic_file_write_iter,
>  	.mmap		= generic_file_mmap,
>  	.release	= fat_file_release,
>  	.unlocked_ioctl	= fat_generic_ioctl,
> diff --git a/fs/hfs/inode.c b/fs/hfs/inode.c
> index 2a87ba4..0db0679 100644
> --- a/fs/hfs/inode.c
> +++ b/fs/hfs/inode.c
> @@ -666,9 +666,9 @@ static int hfs_file_fsync(struct file *filp, loff_t start, loff_t end,
>  static const struct file_operations hfs_file_operations = {
>  	.llseek		= generic_file_llseek,
>  	.read		= do_sync_read,
> -	.aio_read	= generic_file_aio_read,
> +	.read_iter	= generic_file_read_iter,
>  	.write		= do_sync_write,
> -	.aio_write	= generic_file_aio_write,
> +	.write_iter	= generic_file_write_iter,
>  	.mmap		= generic_file_mmap,
>  	.splice_read	= generic_file_splice_read,
>  	.fsync		= hfs_file_fsync,
> diff --git a/fs/hfsplus/inode.c b/fs/hfsplus/inode.c
> index c87b26c..9b8cdb6 100644
> --- a/fs/hfsplus/inode.c
> +++ b/fs/hfsplus/inode.c
> @@ -373,9 +373,9 @@ static const struct inode_operations hfsplus_file_inode_operations = {
>  static const struct file_operations hfsplus_file_operations = {
>  	.llseek		= generic_file_llseek,
>  	.read		= do_sync_read,
> -	.aio_read	= generic_file_aio_read,
> +	.read_iter	= generic_file_read_iter,
>  	.write		= do_sync_write,
> -	.aio_write	= generic_file_aio_write,
> +	.write_iter	= generic_file_write_iter,
>  	.mmap		= generic_file_mmap,
>  	.splice_read	= generic_file_splice_read,
>  	.fsync		= hfsplus_file_fsync,
> diff --git a/fs/hostfs/hostfs_kern.c b/fs/hostfs/hostfs_kern.c
> index 457addc..4593a9a 100644
> --- a/fs/hostfs/hostfs_kern.c
> +++ b/fs/hostfs/hostfs_kern.c
> @@ -382,8 +382,8 @@ static const struct file_operations hostfs_file_fops = {
>  	.llseek		= generic_file_llseek,
>  	.read		= do_sync_read,
>  	.splice_read	= generic_file_splice_read,
> -	.aio_read	= generic_file_aio_read,
> -	.aio_write	= generic_file_aio_write,
> +	.read_iter	= generic_file_read_iter,
> +	.write_iter	= generic_file_write_iter,
>  	.write		= do_sync_write,
>  	.mmap		= generic_file_mmap,
>  	.open		= hostfs_file_open,
> diff --git a/fs/hpfs/file.c b/fs/hpfs/file.c
> index fbfe2df..efc8cd9 100644
> --- a/fs/hpfs/file.c
> +++ b/fs/hpfs/file.c
> @@ -162,9 +162,9 @@ const struct file_operations hpfs_file_ops =
>  {
>  	.llseek		= generic_file_llseek,
>  	.read		= do_sync_read,
> -	.aio_read	= generic_file_aio_read,
> +	.read_iter	= generic_file_read_iter,
>  	.write		= hpfs_file_write,
> -	.aio_write	= generic_file_aio_write,
> +	.write_iter	= generic_file_write_iter,
>  	.mmap		= generic_file_mmap,
>  	.release	= hpfs_file_release,
>  	.fsync		= hpfs_file_fsync,
> diff --git a/fs/jffs2/file.c b/fs/jffs2/file.c
> index 1506673..1d7ab8b 100644
> --- a/fs/jffs2/file.c
> +++ b/fs/jffs2/file.c
> @@ -51,10 +51,10 @@ const struct file_operations jffs2_file_operations =
>  {
>  	.llseek =	generic_file_llseek,
>  	.open =		generic_file_open,
> - 	.read =		do_sync_read,
> - 	.aio_read =	generic_file_aio_read,
> - 	.write =	do_sync_write,
> - 	.aio_write =	generic_file_aio_write,
> +	.read =		do_sync_read,
> +	.read_iter =	generic_file_read_iter,
> +	.write =	do_sync_write,
> +	.write_iter =	generic_file_write_iter,
>  	.unlocked_ioctl=jffs2_ioctl,
>  	.mmap =		generic_file_readonly_mmap,
>  	.fsync =	jffs2_fsync,
> diff --git a/fs/jfs/file.c b/fs/jfs/file.c
> index dd7442c..040b6c7 100644
> --- a/fs/jfs/file.c
> +++ b/fs/jfs/file.c
> @@ -151,8 +151,8 @@ const struct file_operations jfs_file_operations = {
>  	.llseek		= generic_file_llseek,
>  	.write		= do_sync_write,
>  	.read		= do_sync_read,
> -	.aio_read	= generic_file_aio_read,
> -	.aio_write	= generic_file_aio_write,
> +	.read_iter	= generic_file_read_iter,
> +	.write_iter	= generic_file_write_iter,
>  	.mmap		= generic_file_mmap,
>  	.splice_read	= generic_file_splice_read,
>  	.splice_write	= generic_file_splice_write,
> diff --git a/fs/logfs/file.c b/fs/logfs/file.c
> index 3886cde..ca35c88 100644
> --- a/fs/logfs/file.c
> +++ b/fs/logfs/file.c
> @@ -263,8 +263,8 @@ const struct inode_operations logfs_reg_iops = {
>  };
>  
>  const struct file_operations logfs_reg_fops = {
> -	.aio_read	= generic_file_aio_read,
> -	.aio_write	= generic_file_aio_write,
> +	.read_iter	= generic_file_read_iter,
> +	.write_iter	= generic_file_write_iter,
>  	.fsync		= logfs_fsync,
>  	.unlocked_ioctl	= logfs_ioctl,
>  	.llseek		= generic_file_llseek,
> diff --git a/fs/minix/file.c b/fs/minix/file.c
> index adc6f54..346d8f37 100644
> --- a/fs/minix/file.c
> +++ b/fs/minix/file.c
> @@ -15,9 +15,9 @@
>  const struct file_operations minix_file_operations = {
>  	.llseek		= generic_file_llseek,
>  	.read		= do_sync_read,
> -	.aio_read	= generic_file_aio_read,
> +	.read_iter	= generic_file_read_iter,
>  	.write		= do_sync_write,
> -	.aio_write	= generic_file_aio_write,
> +	.write_iter	= generic_file_write_iter,
>  	.mmap		= generic_file_mmap,
>  	.fsync		= generic_file_fsync,
>  	.splice_read	= generic_file_splice_read,
> diff --git a/fs/nilfs2/file.c b/fs/nilfs2/file.c
> index 6194688..3e4337e 100644
> --- a/fs/nilfs2/file.c
> +++ b/fs/nilfs2/file.c
> @@ -153,8 +153,8 @@ const struct file_operations nilfs_file_operations = {
>  	.llseek		= generic_file_llseek,
>  	.read		= do_sync_read,
>  	.write		= do_sync_write,
> -	.aio_read	= generic_file_aio_read,
> -	.aio_write	= generic_file_aio_write,
> +	.read_iter	= generic_file_read_iter,
> +	.write_iter	= generic_file_write_iter,
>  	.unlocked_ioctl	= nilfs_ioctl,
>  #ifdef CONFIG_COMPAT
>  	.compat_ioctl	= nilfs_compat_ioctl,
> diff --git a/fs/omfs/file.c b/fs/omfs/file.c
> index e0d9b3e..badafd8 100644
> --- a/fs/omfs/file.c
> +++ b/fs/omfs/file.c
> @@ -339,8 +339,8 @@ const struct file_operations omfs_file_operations = {
>  	.llseek = generic_file_llseek,
>  	.read = do_sync_read,
>  	.write = do_sync_write,
> -	.aio_read = generic_file_aio_read,
> -	.aio_write = generic_file_aio_write,
> +	.read_iter = generic_file_read_iter,
> +	.write_iter = generic_file_write_iter,
>  	.mmap = generic_file_mmap,
>  	.fsync = generic_file_fsync,
>  	.splice_read = generic_file_splice_read,
> diff --git a/fs/ramfs/file-mmu.c b/fs/ramfs/file-mmu.c
> index 4884ac5..c4d8572 100644
> --- a/fs/ramfs/file-mmu.c
> +++ b/fs/ramfs/file-mmu.c
> @@ -39,9 +39,9 @@ const struct address_space_operations ramfs_aops = {
>  
>  const struct file_operations ramfs_file_operations = {
>  	.read		= do_sync_read,
> -	.aio_read	= generic_file_aio_read,
> +	.read_iter	= generic_file_read_iter,
>  	.write		= do_sync_write,
> -	.aio_write	= generic_file_aio_write,
> +	.write_iter	= generic_file_write_iter,
>  	.mmap		= generic_file_mmap,
>  	.fsync		= noop_fsync,
>  	.splice_read	= generic_file_splice_read,
> diff --git a/fs/ramfs/file-nommu.c b/fs/ramfs/file-nommu.c
> index d5378d0..1d6be6c 100644
> --- a/fs/ramfs/file-nommu.c
> +++ b/fs/ramfs/file-nommu.c
> @@ -39,9 +39,9 @@ const struct file_operations ramfs_file_operations = {
>  	.mmap			= ramfs_nommu_mmap,
>  	.get_unmapped_area	= ramfs_nommu_get_unmapped_area,
>  	.read			= do_sync_read,
> -	.aio_read		= generic_file_aio_read,
> +	.read_iter		= generic_file_read_iter,
>  	.write			= do_sync_write,
> -	.aio_write		= generic_file_aio_write,
> +	.write_iter		= generic_file_write_iter,
>  	.fsync			= noop_fsync,
>  	.splice_read		= generic_file_splice_read,
>  	.splice_write		= generic_file_splice_write,
> diff --git a/fs/reiserfs/file.c b/fs/reiserfs/file.c
> index 50302d6..831703d 100644
> --- a/fs/reiserfs/file.c
> +++ b/fs/reiserfs/file.c
> @@ -304,8 +304,8 @@ const struct file_operations reiserfs_file_operations = {
>  	.open = reiserfs_file_open,
>  	.release = reiserfs_file_release,
>  	.fsync = reiserfs_sync_file,
> -	.aio_read = generic_file_aio_read,
> -	.aio_write = generic_file_aio_write,
> +	.read_iter = generic_file_read_iter,
> +	.write_iter = generic_file_write_iter,
>  	.splice_read = generic_file_splice_read,
>  	.splice_write = generic_file_splice_write,
>  	.llseek = generic_file_llseek,
> diff --git a/fs/romfs/mmap-nommu.c b/fs/romfs/mmap-nommu.c
> index e1a7779..e34d51a 100644
> --- a/fs/romfs/mmap-nommu.c
> +++ b/fs/romfs/mmap-nommu.c
> @@ -70,7 +70,7 @@ static int romfs_mmap(struct file *file, struct vm_area_struct *vma)
>  const struct file_operations romfs_ro_fops = {
>  	.llseek			= generic_file_llseek,
>  	.read			= do_sync_read,
> -	.aio_read		= generic_file_aio_read,
> +	.read_iter		= generic_file_read_iter,
>  	.splice_read		= generic_file_splice_read,
>  	.mmap			= romfs_mmap,
>  	.get_unmapped_area	= romfs_get_unmapped_area,
> diff --git a/fs/sysv/file.c b/fs/sysv/file.c
> index 9d4dc68..ff4b363 100644
> --- a/fs/sysv/file.c
> +++ b/fs/sysv/file.c
> @@ -22,9 +22,9 @@
>  const struct file_operations sysv_file_operations = {
>  	.llseek		= generic_file_llseek,
>  	.read		= do_sync_read,
> -	.aio_read	= generic_file_aio_read,
> +	.read_iter	= generic_file_read_iter,
>  	.write		= do_sync_write,
> -	.aio_write	= generic_file_aio_write,
> +	.write_iter	= generic_file_write_iter,
>  	.mmap		= generic_file_mmap,
>  	.fsync		= generic_file_fsync,
>  	.splice_read	= generic_file_splice_read,
> diff --git a/fs/ufs/file.c b/fs/ufs/file.c
> index 33afa20..e155e4c 100644
> --- a/fs/ufs/file.c
> +++ b/fs/ufs/file.c
> @@ -36,9 +36,9 @@
>  const struct file_operations ufs_file_operations = {
>  	.llseek		= generic_file_llseek,
>  	.read		= do_sync_read,
> -	.aio_read	= generic_file_aio_read,
> +	.read_iter	= generic_file_read_iter,
>  	.write		= do_sync_write,
> -	.aio_write	= generic_file_aio_write,
> +	.write_iter	= generic_file_write_iter,
>  	.mmap		= generic_file_mmap,
>  	.open           = generic_file_open,
>  	.fsync		= generic_file_fsync,
> 


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