diff options
author | Badari Pulavarty <pbadari@us.ibm.com> | 2006-09-30 23:28:46 -0700 |
---|---|---|
committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-10-01 00:39:28 -0700 |
commit | 027445c37282bc1ed26add45e573ad2d3e4860a5 (patch) | |
tree | 93eab101a938ffebaea64703033c8649df4d73f0 | |
parent | 9ea0f9499d15c49df23e7aac4332d830c40e12d0 (diff) | |
download | kernel_goldelico_gta04-027445c37282bc1ed26add45e573ad2d3e4860a5.zip kernel_goldelico_gta04-027445c37282bc1ed26add45e573ad2d3e4860a5.tar.gz kernel_goldelico_gta04-027445c37282bc1ed26add45e573ad2d3e4860a5.tar.bz2 |
[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>
-rw-r--r-- | Documentation/filesystems/Locking | 5 | ||||
-rw-r--r-- | Documentation/filesystems/vfs.txt | 4 | ||||
-rw-r--r-- | arch/s390/hypfs/inode.c | 17 | ||||
-rw-r--r-- | drivers/char/raw.c | 14 | ||||
-rw-r--r-- | drivers/usb/gadget/inode.c | 80 | ||||
-rw-r--r-- | fs/aio.c | 15 | ||||
-rw-r--r-- | fs/block_dev.c | 10 | ||||
-rw-r--r-- | fs/cifs/cifsfs.c | 6 | ||||
-rw-r--r-- | fs/ext3/file.c | 5 | ||||
-rw-r--r-- | fs/nfs/direct.c | 26 | ||||
-rw-r--r-- | fs/nfs/file.c | 34 | ||||
-rw-r--r-- | fs/ntfs/file.c | 8 | ||||
-rw-r--r-- | fs/ocfs2/file.c | 28 | ||||
-rw-r--r-- | fs/read_write.c | 20 | ||||
-rw-r--r-- | fs/reiserfs/file.c | 4 | ||||
-rw-r--r-- | fs/xfs/linux-2.6/xfs_file.c | 46 | ||||
-rw-r--r-- | include/linux/aio.h | 2 | ||||
-rw-r--r-- | include/linux/fs.h | 10 | ||||
-rw-r--r-- | include/linux/nfs_fs.h | 10 | ||||
-rw-r--r-- | include/net/sock.h | 1 | ||||
-rw-r--r-- | mm/filemap.c | 39 | ||||
-rw-r--r-- | net/socket.c | 49 |
22 files changed, 242 insertions, 191 deletions
diff --git a/Documentation/filesystems/Locking b/Documentation/filesystems/Locking index 247d7f6..eb1a6ca 100644 --- a/Documentation/filesystems/Locking +++ b/Documentation/filesystems/Locking @@ -356,10 +356,9 @@ The last two are called only from check_disk_change(). prototypes: 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, diff --git a/Documentation/filesystems/vfs.txt b/Documentation/filesystems/vfs.txt index 1cb7e8b..cd07c21 100644 --- a/Documentation/filesystems/vfs.txt +++ b/Documentation/filesystems/vfs.txt @@ -699,9 +699,9 @@ This describes how the VFS can manipulate an open file. As of kernel struct file_operations { 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); 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 @@ static int hypfs_open(struct inode *inode, struct file *filp) 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 @@ static ssize_t hypfs_aio_read(struct kiocb *iocb, __user char *buf, 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; diff --git a/drivers/char/raw.c b/drivers/char/raw.c index c596a08..173fb08 100644 --- a/drivers/char/raw.c +++ b/drivers/char/raw.c @@ -249,23 +249,11 @@ static ssize_t raw_file_write(struct file *file, const char __user *buf, return generic_file_write_nolock(file, &local_iov, 1, ppos); } -static ssize_t raw_file_aio_write(struct kiocb *iocb, const char __user *buf, - size_t count, loff_t pos) -{ - struct iovec local_iov = { - .iov_base = (char __user *)buf, - .iov_len = count - }; - - return generic_file_aio_write_nolock(iocb, &local_iov, 1, &iocb->ki_pos); -} - - static const struct file_operations raw_fops = { .read = generic_file_read, .aio_read = generic_file_aio_read, .write = raw_file_write, - .aio_write = raw_file_aio_write, + .aio_write = generic_file_aio_write_nolock, .open = raw_open, .release= raw_release, .ioctl = raw_ioctl, diff --git a/drivers/usb/gadget/inode.c b/drivers/usb/gadget/inode.c index 4a000d8..86924f9 100644 --- a/drivers/usb/gadget/inode.c +++ b/drivers/usb/gadget/inode.c @@ -533,7 +533,8 @@ struct kiocb_priv { struct usb_request *req; struct ep_data *epdata; void *buf; - char __user *ubuf; /* NULL for writes */ + const struct iovec *iv; + unsigned long nr_segs; unsigned actual; }; @@ -561,17 +562,32 @@ static int ep_aio_cancel(struct kiocb *iocb, struct io_event *e) static ssize_t ep_aio_read_retry(struct kiocb *iocb) { struct kiocb_priv *priv = iocb->private; - ssize_t status = priv->actual; - - /* we "retry" to get the right mm context for this: */ - status = copy_to_user(priv->ubuf, priv->buf, priv->actual); - if (unlikely(0 != status)) - status = -EFAULT; - else - status = priv->actual; - kfree(priv->buf); - kfree(priv); - return status; + ssize_t len, total; + int i; + + /* we "retry" to get the right mm context for this: */ + + /* copy stuff into user buffers */ + total = priv->actual; + len = 0; + for (i=0; i < priv->nr_segs; i++) { + ssize_t this = min((ssize_t)(priv->iv[i].iov_len), total); + + if (copy_to_user(priv->iv[i].iov_base, priv->buf, this)) { + if (len == 0) + len = -EFAULT; + break; + } + + total -= this; + len += this; + if (total == 0) + break; + } + kfree(priv->buf); + kfree(priv); + aio_put_req(iocb); + return len; } static void ep_aio_complete(struct usb_ep *ep, struct usb_request *req) @@ -584,7 +600,7 @@ static void ep_aio_complete(struct usb_ep *ep, struct usb_request *req) spin_lock(&epdata->dev->lock); priv->req = NULL; priv->epdata = NULL; - if (priv->ubuf == NULL + if (priv->iv == NULL || unlikely(req->actual == 0) || unlikely(kiocbIsCancelled(iocb))) { kfree(req->buf); @@ -619,7 +635,8 @@ ep_aio_rwtail( char *buf, size_t len, struct ep_data *epdata, - char __user *ubuf + const struct iovec *iv, + unsigned long nr_segs ) { struct kiocb_priv *priv; @@ -634,7 +651,8 @@ fail: return value; } iocb->private = priv; - priv->ubuf = ubuf; + priv->iv = iv; + priv->nr_segs = nr_segs; value = get_ready_ep(iocb->ki_filp->f_flags, epdata); if (unlikely(value < 0)) { @@ -674,41 +692,53 @@ fail: kfree(priv); put_ep(epdata); } else - value = (ubuf ? -EIOCBRETRY : -EIOCBQUEUED); + value = (iv ? -EIOCBRETRY : -EIOCBQUEUED); return value; } static ssize_t -ep_aio_read(struct kiocb *iocb, char __user *ubuf, size_t len, loff_t o) +ep_aio_read(struct kiocb *iocb, const struct iovec *iov, + unsigned long nr_segs, loff_t o) { struct ep_data *epdata = iocb->ki_filp->private_data; char *buf; if (unlikely(epdata->desc.bEndpointAddress & USB_DIR_IN)) return -EINVAL; - buf = kmalloc(len, GFP_KERNEL); + + buf = kmalloc(iocb->ki_left, GFP_KERNEL); if (unlikely(!buf)) return -ENOMEM; + iocb->ki_retry = ep_aio_read_retry; - return ep_aio_rwtail(iocb, buf, len, epdata, ubuf); + return ep_aio_rwtail(iocb, buf, iocb->ki_left, epdata, iov, nr_segs); } static ssize_t -ep_aio_write(struct kiocb *iocb, const char __user *ubuf, size_t len, loff_t o) +ep_aio_write(struct kiocb *iocb, const struct iovec *iov, + unsigned long nr_segs, loff_t o) { struct ep_data *epdata = iocb->ki_filp->private_data; char *buf; + size_t len = 0; + int i = 0; if (unlikely(!(epdata->desc.bEndpointAddress & USB_DIR_IN))) return -EINVAL; - buf = kmalloc(len, GFP_KERNEL); + + buf = kmalloc(iocb->ki_left, GFP_KERNEL); if (unlikely(!buf)) return -ENOMEM; - if (unlikely(copy_from_user(buf, ubuf, len) != 0)) { - kfree(buf); - return -EFAULT; + + for (i=0; i < nr_segs; i++) { + if (unlikely(copy_from_user(&buf[len], iov[i].iov_base, + iov[i].iov_len) != 0)) { + kfree(buf); + return -EFAULT; + } + len += iov[i].iov_len; } - return ep_aio_rwtail(iocb, buf, len, epdata, NULL); + return ep_aio_rwtail(iocb, buf, len, epdata, NULL, 0); } /*----------------------------------------------------------------------*/ @@ -15,6 +15,7 @@ #include <linux/aio_abi.h> #include <linux/module.h> #include <linux/syscalls.h> +#include <linux/uio.h> #define DEBUG 0 @@ -1315,8 +1316,11 @@ static ssize_t aio_pread(struct kiocb *iocb) ssize_t ret = 0; do { - ret = file->f_op->aio_read(iocb, iocb->ki_buf, - iocb->ki_left, iocb->ki_pos); + iocb->ki_inline_vec.iov_base = iocb->ki_buf; + iocb->ki_inline_vec.iov_len = iocb->ki_left; + + ret = file->f_op->aio_read(iocb, &iocb->ki_inline_vec, + 1, iocb->ki_pos); /* * Can't just depend on iocb->ki_left to determine * whether we are done. This may have been a short read. @@ -1349,8 +1353,11 @@ static ssize_t aio_pwrite(struct kiocb *iocb) ssize_t ret = 0; do { - ret = file->f_op->aio_write(iocb, iocb->ki_buf, - iocb->ki_left, iocb->ki_pos); + iocb->ki_inline_vec.iov_base = iocb->ki_buf; + iocb->ki_inline_vec.iov_len = iocb->ki_left; + + ret = file->f_op->aio_write(iocb, &iocb->ki_inline_vec, + 1, iocb->ki_pos); if (ret > 0) { iocb->ki_buf += ret; iocb->ki_left -= ret; diff --git a/fs/block_dev.c b/fs/block_dev.c index 0c361ea..8c81911 100644 --- a/fs/block_dev.c +++ b/fs/block_dev.c @@ -1162,14 +1162,6 @@ static ssize_t blkdev_file_write(struct file *file, const char __user *buf, return generic_file_write_nolock(file, &local_iov, 1, ppos); } -static ssize_t blkdev_file_aio_write(struct kiocb *iocb, const char __user *buf, - size_t count, loff_t pos) -{ - struct iovec local_iov = { .iov_base = (void __user *)buf, .iov_len = count }; - - return generic_file_aio_write_nolock(iocb, &local_iov, 1, &iocb->ki_pos); -} - static long block_ioctl(struct file *file, unsigned cmd, unsigned long arg) { return blkdev_ioctl(file->f_mapping->host, file, cmd, arg); @@ -1192,7 +1184,7 @@ const struct file_operations def_blk_fops = { .read = generic_file_read, .write = blkdev_file_write, .aio_read = generic_file_aio_read, - .aio_write = blkdev_file_aio_write, + .aio_write = generic_file_aio_write_nolock, .mmap = generic_file_mmap, .fsync = block_fsync, .unlocked_ioctl = block_ioctl, diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c index 22bcf4d..5abb42a 100644 --- a/fs/cifs/cifsfs.c +++ b/fs/cifs/cifsfs.c @@ -492,13 +492,13 @@ static ssize_t cifs_file_writev(struct file *file, const struct iovec *iov, return written; } -static ssize_t cifs_file_aio_write(struct kiocb *iocb, const char __user *buf, - size_t count, loff_t pos) +static ssize_t cifs_file_aio_write(struct kiocb *iocb, const struct iovec *iov, + unsigned long nr_segs, loff_t pos) { struct inode *inode = iocb->ki_filp->f_dentry->d_inode; ssize_t written; - written = generic_file_aio_write(iocb, buf, count, pos); + written = generic_file_aio_write(iocb, iov, nr_segs, pos); if (!CIFS_I(inode)->clientCanCacheAll) filemap_fdatawrite(inode->i_mapping); return written; diff --git a/fs/ext3/file.c b/fs/ext3/file.c index 74ff20f..5c76245 100644 --- a/fs/ext3/file.c +++ b/fs/ext3/file.c @@ -48,14 +48,15 @@ static int ext3_release_file (struct inode * inode, struct file * filp) } static ssize_t -ext3_file_write(struct kiocb *iocb, const char __user *buf, size_t count, loff_t pos) +ext3_file_write(struct kiocb *iocb, const struct iovec *iov, + unsigned long nr_segs, loff_t pos) { struct file *file = iocb->ki_filp; struct inode *inode = file->f_dentry->d_inode; ssize_t ret; int err; - ret = generic_file_aio_write(iocb, buf, count, pos); + ret = generic_file_aio_write(iocb, iov, nr_segs, pos); /* * Skip flushing if there was an error, or if nothing was written. diff --git a/fs/nfs/direct.c b/fs/nfs/direct.c index 377839b..9f7f8b9 100644 --- a/fs/nfs/direct.c +++ b/fs/nfs/direct.c @@ -707,8 +707,8 @@ static ssize_t nfs_direct_write(struct kiocb *iocb, unsigned long user_addr, siz /** * nfs_file_direct_read - file direct read operation for NFS files * @iocb: target I/O control block - * @buf: user's buffer into which to read data - * @count: number of bytes to read + * @iov: vector of user buffers into which to read data + * @nr_segs: size of iov vector * @pos: byte offset in file where reading starts * * We use this function for direct reads instead of calling @@ -725,17 +725,24 @@ static ssize_t nfs_direct_write(struct kiocb *iocb, unsigned long user_addr, siz * client must read the updated atime from the server back into its * cache. */ -ssize_t nfs_file_direct_read(struct kiocb *iocb, char __user *buf, size_t count, loff_t pos) +ssize_t nfs_file_direct_read(struct kiocb *iocb, const struct iovec *iov, + unsigned long nr_segs, loff_t pos) { ssize_t retval = -EINVAL; struct file *file = iocb->ki_filp; struct address_space *mapping = file->f_mapping; + /* XXX: temporary */ + const char __user *buf = iov[0].iov_base; + size_t count = iov[0].iov_len; dprintk("nfs: direct read(%s/%s, %lu@%Ld)\n", file->f_dentry->d_parent->d_name.name, file->f_dentry->d_name.name, (unsigned long) count, (long long) pos); + if (nr_segs != 1) + return -EINVAL; + if (count < 0) goto out; retval = -EFAULT; @@ -760,8 +767,8 @@ out: /** * nfs_file_direct_write - file direct write operation for NFS files * @iocb: target I/O control block - * @buf: user's buffer from which to write data - * @count: number of bytes to write + * @iov: vector of user buffers from which to write data + * @nr_segs: size of iov vector * @pos: byte offset in file where writing starts * * We use this function for direct writes instead of calling @@ -782,17 +789,24 @@ out: * Note that O_APPEND is not supported for NFS direct writes, as there * is no atomic O_APPEND write facility in the NFS protocol. */ -ssize_t nfs_file_direct_write(struct kiocb *iocb, const char __user *buf, size_t count, loff_t pos) +ssize_t nfs_file_direct_write(struct kiocb *iocb, const struct iovec *iov, + unsigned long nr_segs, loff_t pos) { ssize_t retval; struct file *file = iocb->ki_filp; struct address_space *mapping = file->f_mapping; + /* XXX: temporary */ + const char __user *buf = iov[0].iov_base; + size_t count = iov[0].iov_len; dfprintk(VFS, "nfs: direct write(%s/%s, %lu@%Ld)\n", file->f_dentry->d_parent->d_name.name, file->f_dentry->d_name.name, (unsigned long) count, (long long) pos); + if (nr_segs != 1) + return -EINVAL; + retval = generic_write_checks(file, &pos, &count, 0); if (retval) goto out; diff --git a/fs/nfs/file.c b/fs/nfs/file.c index be997d6..cc93865 100644 --- a/fs/nfs/file.c +++ b/fs/nfs/file.c @@ -41,8 +41,10 @@ static int nfs_file_release(struct inode *, struct file *); static loff_t nfs_file_llseek(struct file *file, loff_t offset, int origin); static int nfs_file_mmap(struct file *, struct vm_area_struct *); static ssize_t nfs_file_sendfile(struct file *, loff_t *, size_t, read_actor_t, void *); -static ssize_t nfs_file_read(struct kiocb *, char __user *, size_t, loff_t); -static ssize_t nfs_file_write(struct kiocb *, const char __user *, size_t, loff_t); +static ssize_t nfs_file_read(struct kiocb *, const struct iovec *iov, + unsigned long nr_segs, loff_t pos); +static ssize_t nfs_file_write(struct kiocb *, const struct iovec *iov, + unsigned long nr_segs, loff_t pos); static int nfs_file_flush(struct file *, fl_owner_t id); static int nfs_fsync(struct file *, struct dentry *dentry, int datasync); static int nfs_check_flags(int flags); @@ -53,8 +55,8 @@ const struct file_operations nfs_file_operations = { .llseek = nfs_file_llseek, .read = do_sync_read, .write = do_sync_write, - .aio_read = nfs_file_read, - .aio_write = nfs_file_write, + .aio_read = nfs_file_read, + .aio_write = nfs_file_write, .mmap = nfs_file_mmap, .open = nfs_file_open, .flush = nfs_file_flush, @@ -196,15 +198,17 @@ nfs_file_flush(struct file *file, fl_owner_t id) } static ssize_t -nfs_file_read(struct kiocb *iocb, char __user * buf, size_t count, loff_t pos) +nfs_file_read(struct kiocb *iocb, const struct iovec *iov, + unsigned long nr_segs, loff_t pos) { struct dentry * dentry = iocb->ki_filp->f_dentry; struct inode * inode = dentry->d_inode; ssize_t result; + size_t count = iov_length(iov, nr_segs); #ifdef CONFIG_NFS_DIRECTIO if (iocb->ki_filp->f_flags & O_DIRECT) - return nfs_file_direct_read(iocb, buf, count, pos); + return nfs_file_direct_read(iocb, iov, nr_segs, pos); #endif dfprintk(VFS, "nfs: read(%s/%s, %lu@%lu)\n", @@ -214,7 +218,7 @@ nfs_file_read(struct kiocb *iocb, char __user * buf, size_t count, loff_t pos) result = nfs_revalidate_mapping(inode, iocb->ki_filp->f_mapping); nfs_add_stats(inode, NFSIOS_NORMALREADBYTES, count); if (!result) - result = generic_file_aio_read(iocb, buf, count, pos); + result = generic_file_aio_read(iocb, iov, nr_segs, pos); return result; } @@ -336,24 +340,22 @@ const struct address_space_operations nfs_file_aops = { #endif }; -/* - * Write to a file (through the page cache). - */ -static ssize_t -nfs_file_write(struct kiocb *iocb, const char __user *buf, size_t count, loff_t pos) +static ssize_t nfs_file_write(struct kiocb *iocb, const struct iovec *iov, + unsigned long nr_segs, loff_t pos) { struct dentry * dentry = iocb->ki_filp->f_dentry; struct inode * inode = dentry->d_inode; ssize_t result; + size_t count = iov_length(iov, nr_segs); #ifdef CONFIG_NFS_DIRECTIO if (iocb->ki_filp->f_flags & O_DIRECT) - return nfs_file_direct_write(iocb, buf, count, pos); + return nfs_file_direct_write(iocb, iov, nr_segs, pos); #endif - dfprintk(VFS, "nfs: write(%s/%s(%ld), %lu@%lu)\n", + dfprintk(VFS, "nfs: write(%s/%s(%ld), %lu@%Ld)\n", dentry->d_parent->d_name.name, dentry->d_name.name, - inode->i_ino, (unsigned long) count, (unsigned long) pos); + inode->i_ino, (unsigned long) count, (long long) pos); result = -EBUSY; if (IS_SWAPFILE(inode)) @@ -372,7 +374,7 @@ nfs_file_write(struct kiocb *iocb, const char __user *buf, size_t count, loff_t goto out; nfs_add_stats(inode, NFSIOS_NORMALWRITTENBYTES, count); - result = generic_file_aio_write(iocb, buf, count, pos); + result = generic_file_aio_write(iocb, iov, nr_segs, pos); out: return result; diff --git a/fs/ntfs/file.c b/fs/ntfs/file.c index 585a79d..0c46f5c 100644 --- a/fs/ntfs/file.c +++ b/fs/ntfs/file.c @@ -2176,20 +2176,18 @@ out: /** * ntfs_file_aio_write - */ -static ssize_t ntfs_file_aio_write(struct kiocb *iocb, const char __user *buf, - size_t count, loff_t pos) +static ssize_t ntfs_file_aio_write(struct kiocb *iocb, const struct iovec *iov, + unsigned long nr_segs, loff_t pos) { struct file *file = iocb->ki_filp; struct address_space *mapping = file->f_mapping; struct inode *inode = mapping->host; ssize_t ret; - struct iovec local_iov = { .iov_base = (void __user *)buf, - .iov_len = count }; BUG_ON(iocb->ki_pos != pos); mutex_lock(&inode->i_mutex); - ret = ntfs_file_aio_write_nolock(iocb, &local_iov, 1, &iocb->ki_pos); + ret = ntfs_file_aio_write_nolock(iocb, iov, nr_segs, &iocb->ki_pos); mutex_unlock(&inode->i_mutex); if (ret > 0 && ((file->f_flags & O_SYNC) || IS_SYNC(inode))) { int err = sync_page_range(inode, mapping, pos, ret); diff --git a/fs/ocfs2/file.c b/fs/ocfs2/file.c index 2bbfa17..d9ba0a9 100644 --- a/fs/ocfs2/file.c +++ b/fs/ocfs2/file.c @@ -961,25 +961,23 @@ static inline int ocfs2_write_should_remove_suid(struct inode *inode) } static ssize_t ocfs2_file_aio_write(struct kiocb *iocb, - const char __user *buf, - size_t count, + const struct iovec *iov, + unsigned long nr_segs, loff_t pos) { - struct iovec local_iov = { .iov_base = (void __user *)buf, - .iov_len = count }; int ret, rw_level = -1, meta_level = -1, have_alloc_sem = 0; u32 clusters; struct file *filp = iocb->ki_filp; struct inode *inode = filp->f_dentry->d_inode; loff_t newsize, saved_pos; - mlog_entry("(0x%p, 0x%p, %u, '%.*s')\n", filp, buf, - (unsigned int)count, + mlog_entry("(0x%p, %u, '%.*s')\n", filp, + (unsigned int)nr_segs, filp->f_dentry->d_name.len, filp->f_dentry->d_name.name); /* happy write of zero bytes */ - if (count == 0) + if (iocb->ki_left == 0) return 0; if (!inode) { @@ -1048,7 +1046,7 @@ static ssize_t ocfs2_file_aio_write(struct kiocb *iocb, } else { saved_pos = iocb->ki_pos; } - newsize = count + saved_pos; + newsize = iocb->ki_left + saved_pos; mlog(0, "pos=%lld newsize=%lld cursize=%lld\n", (long long) saved_pos, (long long) newsize, @@ -1081,7 +1079,7 @@ static ssize_t ocfs2_file_aio_write(struct kiocb *iocb, if (!clusters) break; - ret = ocfs2_extend_file(inode, NULL, newsize, count); + ret = ocfs2_extend_file(inode, NULL, newsize, iocb->ki_left); if (ret < 0) { if (ret != -ENOSPC) mlog_errno(ret); @@ -1098,7 +1096,7 @@ static ssize_t ocfs2_file_aio_write(struct kiocb *iocb, /* communicate with ocfs2_dio_end_io */ ocfs2_iocb_set_rw_locked(iocb); - ret = generic_file_aio_write_nolock(iocb, &local_iov, 1, &iocb->ki_pos); + ret = generic_file_aio_write_nolock(iocb, iov, nr_segs, iocb->ki_pos); /* buffered aio wouldn't have proper lock coverage today */ BUG_ON(ret == -EIOCBQUEUED && !(filp->f_flags & O_DIRECT)); @@ -1132,16 +1130,16 @@ out: } static ssize_t ocfs2_file_aio_read(struct kiocb *iocb, - char __user *buf, - size_t count, + const struct iovec *iov, + unsigned long nr_segs, loff_t pos) { int ret = 0, rw_level = -1, have_alloc_sem = 0; struct file *filp = iocb->ki_filp; struct inode *inode = filp->f_dentry->d_inode; - mlog_entry("(0x%p, 0x%p, %u, '%.*s')\n", filp, buf, - (unsigned int)count, + mlog_entry("(0x%p, %u, '%.*s')\n", filp, + (unsigned int)nr_segs, filp->f_dentry->d_name.len, filp->f_dentry->d_name.name); @@ -1185,7 +1183,7 @@ static ssize_t ocfs2_file_aio_read(struct kiocb *iocb, } ocfs2_meta_unlock(inode, 0); - ret = generic_file_aio_read(iocb, buf, count, iocb->ki_pos); + ret = generic_file_aio_read(iocb, iov, nr_segs, iocb->ki_pos); if (ret == -EINVAL) mlog(ML_ERROR, "generic_file_aio_read returned -EINVAL\n"); diff --git a/fs/read_write.c b/fs/read_write.c index d4cb318..679dd53 100644 --- a/fs/read_write.c +++ b/fs/read_write.c @@ -227,14 +227,20 @@ static void wait_on_retry_sync_kiocb(struct kiocb *iocb) ssize_t do_sync_read(struct file *filp, char __user *buf, size_t len, loff_t *ppos) { + struct iovec iov = { .iov_base = buf, .iov_len = len }; struct kiocb kiocb; ssize_t ret; init_sync_kiocb(&kiocb, filp); kiocb.ki_pos = *ppos; - while (-EIOCBRETRY == - (ret = filp->f_op->aio_read(&kiocb, buf, len, kiocb.ki_pos))) + kiocb.ki_left = len; + + for (;;) { + ret = filp->f_op->aio_read(&kiocb, &iov, 1, kiocb.ki_pos); + if (ret != -EIOCBRETRY) + break; wait_on_retry_sync_kiocb(&kiocb); + } if (-EIOCBQUEUED == ret) ret = wait_on_sync_kiocb(&kiocb); @@ -279,14 +285,20 @@ EXPORT_SYMBOL(vfs_read); ssize_t do_sync_write(struct file *filp, const char __user *buf, size_t len, loff_t *ppos) { + struct iovec iov = { .iov_base = (void __user *)buf, .iov_len = len }; struct kiocb kiocb; ssize_t ret; init_sync_kiocb(&kiocb, filp); kiocb.ki_pos = *ppos; - while (-EIOCBRETRY == - (ret = filp->f_op->aio_write(&kiocb, buf, len, kiocb.ki_pos))) + kiocb.ki_left = len; + + for (;;) { + ret = filp->f_op->aio_write(&kiocb, &iov, 1, kiocb.ki_pos); + if (ret != -EIOCBRETRY) + break; wait_on_retry_sync_kiocb(&kiocb); + } if (-EIOCBQUEUED == ret) ret = wait_on_sync_kiocb(&kiocb); diff --git a/fs/reiserfs/file.c b/fs/reiserfs/file.c index c11f611..41f2436 100644 --- a/fs/reiserfs/file.c +++ b/fs/reiserfs/file.c @@ -1334,7 +1334,7 @@ static ssize_t reiserfs_file_write(struct file *file, /* the file we are going t if (err) return err; } - result = generic_file_write(file, buf, count, ppos); + result = do_sync_write(file, buf, count, ppos); if (after_file_end) { /* Now update i_size and remove the savelink */ struct reiserfs_transaction_handle th; @@ -1566,7 +1566,7 @@ static ssize_t reiserfs_file_write(struct file *file, /* the file we are going t } const struct file_operations reiserfs_file_operations = { - .read = generic_file_read, + .read = do_sync_read, .write = reiserfs_file_write, .ioctl = reiserfs_ioctl, #ifdef CONFIG_COMPAT diff --git a/fs/xfs/linux-2.6/xfs_file.c b/fs/xfs/linux-2.6/xfs_file.c index 41cfcba..4737971 100644 --- a/fs/xfs/linux-2.6/xfs_file.c +++ b/fs/xfs/linux-2.6/xfs_file.c @@ -49,50 +49,49 @@ static struct vm_operations_struct xfs_dmapi_file_vm_ops; STATIC inline ssize_t __xfs_file_read( struct kiocb *iocb, - char __user *buf, + const struct iovec *iov, + unsigned long nr_segs, int ioflags, - size_t count, loff_t pos) { - struct iovec iov = {buf, count}; struct file *file = iocb->ki_filp; bhv_vnode_t *vp = vn_from_inode(file->f_dentry->d_inode); BUG_ON(iocb->ki_pos != pos); if (unlikely(file->f_flags & O_DIRECT)) ioflags |= IO_ISDIRECT; - return bhv_vop_read(vp, iocb, &iov, 1, &iocb->ki_pos, ioflags, NULL); + return bhv_vop_read(vp, iocb, iov, nr_segs, &iocb->ki_pos, + ioflags, NULL); } STATIC ssize_t xfs_file_aio_read( struct kiocb *iocb, - char __user *buf, - size_t count, + const struct iovec *iov, + unsigned long nr_segs, loff_t pos) { - return __xfs_file_read(iocb, buf, IO_ISAIO, count, pos); + return __xfs_file_read(iocb, iov, nr_segs, IO_ISAIO, pos); } STATIC ssize_t xfs_file_aio_read_invis( struct kiocb *iocb, - char __user *buf, - size_t count, + const struct iovec *iov, + unsigned long nr_segs, loff_t pos) { - return __xfs_file_read(iocb, buf, IO_ISAIO|IO_INVIS, count, pos); + return __xfs_file_read(iocb, iov, nr_segs, IO_ISAIO|IO_INVIS, pos); } STATIC inline ssize_t __xfs_file_write( - struct kiocb *iocb, - const char __user *buf, - int ioflags, - size_t count, - loff_t pos) + struct kiocb *iocb, + const struct iovec *iov, + unsigned long nr_segs, + int ioflags, + loff_t pos) { - struct iovec iov = {(void __user *)buf, count}; struct file *file = iocb->ki_filp; struct inode *inode = file->f_mapping->host; bhv_vnode_t *vp = vn_from_inode(inode); @@ -100,27 +99,28 @@ __xfs_file_write( BUG_ON(iocb->ki_pos != pos); if (unlikely(file->f_flags & O_DIRECT)) ioflags |= IO_ISDIRECT; - return bhv_vop_write(vp, iocb, &iov, 1, &iocb->ki_pos, ioflags, NULL); + return bhv_vop_write(vp, iocb, iov, nr_segs, &iocb->ki_pos, + ioflags, NULL); } STATIC ssize_t xfs_file_aio_write( struct kiocb *iocb, - const char __user *buf, - size_t count, + const struct iovec *iov, + unsigned long nr_segs, loff_t pos) { - return __xfs_file_write(iocb, buf, IO_ISAIO, count, pos); + return __xfs_file_write(iocb, iov, nr_segs, IO_ISAIO, pos); } STATIC ssize_t xfs_file_aio_write_invis( struct kiocb *iocb, - const char __user *buf, - size_t count, + const struct iovec *iov, + unsigned long nr_segs, loff_t pos) { - return __xfs_file_write(iocb, buf, IO_ISAIO|IO_INVIS, count, pos); + return __xfs_file_write(iocb, iov, nr_segs, IO_ISAIO|IO_INVIS, pos); } STATIC inline ssize_t diff --git a/include/linux/aio.h b/include/linux/aio.h index 8a01933..58349e5 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 5baf3a1..257bae1 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 98c9b9f..76ff548 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 diff --git a/include/net/sock.h b/include/net/sock.h index edd4d73..40bb90e 100644 --- a/include/net/sock.h +++ b/include/net/sock.h @@ -665,7 +665,6 @@ struct sock_iocb { struct sock *sk; struct scm_cookie *scm; struct msghdr *msg, async_msg; - struct iovec async_iov; struct kiocb *kiocb; }; diff --git a/mm/filemap.c b/mm/filemap.c index c4fe97f..f6c1d22 100644 --- a/mm/filemap.c +++ b/mm/filemap.c @@ -1226,12 +1226,11 @@ out: EXPORT_SYMBOL(__generic_file_aio_read); ssize_t -generic_file_aio_read(struct kiocb *iocb, char __user *buf, size_t count, loff_t pos) +generic_file_aio_read(struct kiocb *iocb, const struct iovec *iov, + unsigned long nr_segs, loff_t pos) { - struct iovec local_iov = { .iov_base = buf, .iov_len = count }; - BUG_ON(iocb->ki_pos != pos); - return __generic_file_aio_read(iocb, &local_iov, 1, &iocb->ki_pos); + return __generic_file_aio_read(iocb, iov, nr_segs, &iocb->ki_pos); } EXPORT_SYMBOL(generic_file_aio_read); @@ -2315,22 +2314,22 @@ out: current->backing_dev_info = NULL; return written ? written : err; } -EXPORT_SYMBOL(generic_file_aio_write_nolock); -ssize_t -generic_file_aio_write_nolock(struct kiocb *iocb, const struct iovec *iov, - unsigned long nr_segs, loff_t *ppos) +ssize_t generic_file_aio_write_nolock(struct kiocb *iocb, + const struct iovec *iov, unsigned long nr_segs, loff_t pos) { struct file *file = iocb->ki_filp; struct address_space *mapping = file->f_mapping; struct inode *inode = mapping->host; ssize_t ret; - loff_t pos = *ppos; - ret = __generic_file_aio_write_nolock(iocb, iov, nr_segs, ppos); + BUG_ON(iocb->ki_pos != pos); + + ret = __generic_file_aio_write_nolock(iocb, iov, nr_segs, + &iocb->ki_pos); if (ret > 0 && ((file->f_flags & O_SYNC) || IS_SYNC(inode))) { - int err; + ssize_t err; err = sync_page_range_nolock(inode, mapping, pos, ret); if (err < 0) @@ -2338,6 +2337,7 @@ generic_file_aio_write_nolock(struct kiocb *iocb, const struct iovec *iov, } return ret; } +EXPORT_SYMBOL(generic_file_aio_write_nolock); static ssize_t __generic_file_write_nolock(struct file *file, const struct iovec *iov, @@ -2347,8 +2347,9 @@ __generic_file_write_nolock(struct file *file, const struct iovec *iov, ssize_t ret; init_sync_kiocb(&kiocb, file); + kiocb.ki_pos = *ppos; ret = __generic_file_aio_write_nolock(&kiocb, iov, nr_segs, ppos); - if (ret == -EIOCBQUEUED) + if (-EIOCBQUEUED == ret) ret = wait_on_sync_kiocb(&kiocb); return ret; } @@ -2361,28 +2362,28 @@ generic_file_write_nolock(struct file *file, const struct iovec *iov, ssize_t ret; init_sync_kiocb(&kiocb, file); - ret = generic_file_aio_write_nolock(&kiocb, iov, nr_segs, ppos); + kiocb.ki_pos = *ppos; + ret = generic_file_aio_write_nolock(&kiocb, iov, nr_segs, *ppos); if (-EIOCBQUEUED == ret) ret = wait_on_sync_kiocb(&kiocb); + *ppos = kiocb.ki_pos; return ret; } EXPORT_SYMBOL(generic_file_write_nolock); -ssize_t generic_file_aio_write(struct kiocb *iocb, const char __user *buf, - size_t count, loff_t pos) +ssize_t generic_file_aio_write(struct kiocb *iocb, const struct iovec *iov, + unsigned long nr_segs, loff_t pos) { struct file *file = iocb->ki_filp; struct address_space *mapping = file->f_mapping; struct inode *inode = mapping->host; ssize_t ret; - struct iovec local_iov = { .iov_base = (void __user *)buf, - .iov_len = count }; BUG_ON(iocb->ki_pos != pos); mutex_lock(&inode->i_mutex); - ret = __generic_file_aio_write_nolock(iocb, &local_iov, 1, - &iocb->ki_pos); + ret = __generic_file_aio_write_nolock(iocb, iov, nr_segs, + &iocb->ki_pos); mutex_unlock(&inode->i_mutex); if (ret > 0 && ((file->f_flags & O_SYNC) || IS_SYNC(inode))) { diff --git a/net/socket.c b/net/socket.c index 1bc4167..df92e42 100644 --- a/net/socket.c +++ b/net/socket.c @@ -95,10 +95,10 @@ #include <linux/netfilter.h> static int sock_no_open(struct inode *irrelevant, struct file *dontcare); -static ssize_t sock_aio_read(struct kiocb *iocb, char __user *buf, - size_t size, loff_t pos); -static ssize_t sock_aio_write(struct kiocb *iocb, const char __user *buf, - size_t size, loff_t pos); +static ssize_t sock_aio_read(struct kiocb *iocb, const struct iovec *iov, + unsigned long nr_segs, loff_t pos); +static ssize_t sock_aio_write(struct kiocb *iocb, const struct iovec *iov, + unsigned long nr_segs, loff_t pos); static int sock_mmap(struct file *file, struct vm_area_struct *vma); static int sock_close(struct inode *inode, struct file *file); @@ -664,7 +664,6 @@ static ssize_t sock_sendpage(struct file *file, struct page *page, } static struct sock_iocb *alloc_sock_iocb(struct kiocb *iocb, - char __user *ubuf, size_t size, struct sock_iocb *siocb) { if (!is_sync_kiocb(iocb)) { @@ -675,16 +674,13 @@ static struct sock_iocb *alloc_sock_iocb(struct kiocb *iocb, } siocb->kiocb = iocb; - siocb->async_iov.iov_base = ubuf; - siocb->async_iov.iov_len = size; - iocb->private = siocb; return siocb; } static ssize_t do_sock_read(struct msghdr *msg, struct kiocb *iocb, - struct file *file, struct iovec *iov, - unsigned long nr_segs) + struct file *file, const struct iovec *iov, + unsigned long nr_segs) { struct socket *sock = file->private_data; size_t size = 0; @@ -715,32 +711,33 @@ static ssize_t sock_readv(struct file *file, const struct iovec *iov, init_sync_kiocb(&iocb, NULL); iocb.private = &siocb; - ret = do_sock_read(&msg, &iocb, file, (struct iovec *)iov, nr_segs); + ret = do_sock_read(&msg, &iocb, file, iov, nr_segs); if (-EIOCBQUEUED == ret) ret = wait_on_sync_kiocb(&iocb); return ret; } -static ssize_t sock_aio_read(struct kiocb *iocb, char __user *ubuf, - size_t count, loff_t pos) +static ssize_t sock_aio_read(struct kiocb *iocb, const struct iovec *iov, + unsigned long nr_segs, loff_t pos) { struct sock_iocb siocb, *x; if (pos != 0) return -ESPIPE; - if (count == 0) /* Match SYS5 behaviour */ + + if (iocb->ki_left == 0) /* Match SYS5 behaviour */ return 0; - x = alloc_sock_iocb(iocb, ubuf, count, &siocb); + + x = alloc_sock_iocb(iocb, &siocb); if (!x) return -ENOMEM; - return do_sock_read(&x->async_msg, iocb, iocb->ki_filp, - &x->async_iov, 1); + return do_sock_read(&x->async_msg, iocb, iocb->ki_filp, iov, nr_segs); } static ssize_t do_sock_write(struct msghdr *msg, struct kiocb *iocb, - struct file *file, struct iovec *iov, - unsigned long nr_segs) + struct file *file, const struct iovec *iov, + unsigned long nr_segs) { struct socket *sock = file->private_data; size_t size = 0; @@ -773,28 +770,28 @@ static ssize_t sock_writev(struct file *file, const struct iovec *iov, init_sync_kiocb(&iocb, NULL); iocb.private = &siocb; - ret = do_sock_write(&msg, &iocb, file, (struct iovec *)iov, nr_segs); + ret = do_sock_write(&msg, &iocb, file, iov, nr_segs); if (-EIOCBQUEUED == ret) ret = wait_on_sync_kiocb(&iocb); return ret; } -static ssize_t sock_aio_write(struct kiocb *iocb, const char __user *ubuf, - size_t count, loff_t pos) +static ssize_t sock_aio_write(struct kiocb *iocb, const struct iovec *iov, + unsigned long nr_segs, loff_t pos) { struct sock_iocb siocb, *x; if (pos != 0) return -ESPIPE; - if (count == 0) /* Match SYS5 behaviour */ + + if (iocb->ki_left == 0) /* Match SYS5 behaviour */ return 0; - x = alloc_sock_iocb(iocb, (void __user *)ubuf, count, &siocb); + x = alloc_sock_iocb(iocb, &siocb); if (!x) return -ENOMEM; - return do_sock_write(&x->async_msg, iocb, iocb->ki_filp, - &x->async_iov, 1); + return do_sock_write(&x->async_msg, iocb, iocb->ki_filp, iov, nr_segs); } /* |