#include <asm/system.h>
#include "delegation.h"
+#include "iostat.h"
#define NFSDBG_FACILITY NFSDBG_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 int nfs_file_flush(struct file *);
+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);
static int nfs_lock(struct file *filp, int cmd, struct file_lock *fl);
static int nfs_flock(struct file *filp, int cmd, struct file_lock *fl);
-struct file_operations nfs_file_operations = {
+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,
static int
nfs_file_open(struct inode *inode, struct file *filp)
{
- struct nfs_server *server = NFS_SERVER(inode);
- int (*open)(struct inode *, struct file *);
int res;
res = nfs_check_flags(filp->f_flags);
if (res)
return res;
+ nfs_inc_stats(inode, NFSIOS_VFSOPEN);
lock_kernel();
- /* Do NFSv4 open() call */
- if ((open = server->rpc_ops->file_open) != NULL)
- res = open(inode, filp);
+ res = NFS_PROTO(inode)->file_open(inode, filp);
unlock_kernel();
return res;
}
/* Ensure that dirty pages are flushed out with the right creds */
if (filp->f_mode & FMODE_WRITE)
filemap_fdatawrite(filp->f_mapping);
+ nfs_inc_stats(inode, NFSIOS_VFSRELEASE);
return NFS_PROTO(inode)->file_release(inode, filp);
}
-/**
- * nfs_revalidate_file - Revalidate the page cache & related metadata
- * @inode - pointer to inode struct
- * @file - pointer to file
- */
-static int nfs_revalidate_file(struct inode *inode, struct file *filp)
-{
- struct nfs_inode *nfsi = NFS_I(inode);
- int retval = 0;
-
- if ((nfsi->cache_validity & (NFS_INO_REVAL_PAGECACHE|NFS_INO_INVALID_ATTR))
- || nfs_attribute_timeout(inode))
- retval = __nfs_revalidate_inode(NFS_SERVER(inode), inode);
- nfs_revalidate_mapping(inode, filp->f_mapping);
- return 0;
-}
-
/**
* nfs_revalidate_size - Revalidate the file size
* @inode - pointer to inode struct
static loff_t nfs_file_llseek(struct file *filp, loff_t offset, int origin)
{
/* origin == SEEK_END => we must revalidate the cached file length */
- if (origin == 2) {
+ if (origin == SEEK_END) {
struct inode *inode = filp->f_mapping->host;
int retval = nfs_revalidate_file_size(inode, filp);
if (retval < 0)
*
*/
static int
-nfs_file_flush(struct file *file)
+nfs_file_flush(struct file *file, fl_owner_t id)
{
struct nfs_open_context *ctx = (struct nfs_open_context *)file->private_data;
- struct inode *inode = file->f_dentry->d_inode;
+ struct inode *inode = file->f_path.dentry->d_inode;
int status;
dfprintk(VFS, "nfs: flush(%s/%ld)\n", inode->i_sb->s_id, inode->i_ino);
if ((file->f_mode & FMODE_WRITE) == 0)
return 0;
+ nfs_inc_stats(inode, NFSIOS_VFSFLUSH);
lock_kernel();
/* Ensure that data+attribute caches are up to date after close() */
status = nfs_wb_all(inode);
}
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 dentry * dentry = iocb->ki_filp->f_path.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",
dentry->d_parent->d_name.name, dentry->d_name.name,
(unsigned long) count, (unsigned long) pos);
- result = nfs_revalidate_file(inode, iocb->ki_filp);
+ 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;
}
nfs_file_sendfile(struct file *filp, loff_t *ppos, size_t count,
read_actor_t actor, void *target)
{
- struct dentry *dentry = filp->f_dentry;
+ struct dentry *dentry = filp->f_path.dentry;
struct inode *inode = dentry->d_inode;
ssize_t res;
dentry->d_parent->d_name.name, dentry->d_name.name,
(unsigned long) count, (unsigned long long) *ppos);
- res = nfs_revalidate_file(inode, filp);
+ res = nfs_revalidate_mapping(inode, filp->f_mapping);
if (!res)
res = generic_file_sendfile(filp, ppos, count, actor, target);
return res;
static int
nfs_file_mmap(struct file * file, struct vm_area_struct * vma)
{
- struct dentry *dentry = file->f_dentry;
+ struct dentry *dentry = file->f_path.dentry;
struct inode *inode = dentry->d_inode;
int status;
dfprintk(VFS, "nfs: mmap(%s/%s)\n",
dentry->d_parent->d_name.name, dentry->d_name.name);
- status = nfs_revalidate_file(inode, file);
+ status = nfs_revalidate_mapping(inode, file->f_mapping);
if (!status)
status = generic_file_mmap(file, vma);
return status;
dfprintk(VFS, "nfs: fsync(%s/%ld)\n", inode->i_sb->s_id, inode->i_ino);
+ nfs_inc_stats(inode, NFSIOS_VFSFSYNC);
lock_kernel();
status = nfs_wb_all(inode);
if (!status) {
return status;
}
-struct address_space_operations nfs_file_aops = {
+static void nfs_invalidate_page(struct page *page, unsigned long offset)
+{
+ if (offset != 0)
+ return;
+ /* Cancel any unstarted writes on this page */
+ nfs_wb_page_priority(page->mapping->host, page, FLUSH_INVALIDATE);
+}
+
+static int nfs_release_page(struct page *page, gfp_t gfp)
+{
+ /* If PagePrivate() is set, then the page is not freeable */
+ return 0;
+}
+
+static int nfs_launder_page(struct page *page)
+{
+ return nfs_wb_page(page->mapping->host, page);
+}
+
+const struct address_space_operations nfs_file_aops = {
.readpage = nfs_readpage,
.readpages = nfs_readpages,
- .set_page_dirty = __set_page_dirty_nobuffers,
+ .set_page_dirty = nfs_set_page_dirty,
.writepage = nfs_writepage,
.writepages = nfs_writepages,
.prepare_write = nfs_prepare_write,
.commit_write = nfs_commit_write,
+ .invalidatepage = nfs_invalidate_page,
+ .releasepage = nfs_release_page,
#ifdef CONFIG_NFS_DIRECTIO
.direct_IO = nfs_direct_IO,
#endif
+ .launder_page = nfs_launder_page,
};
-/*
- * 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 dentry * dentry = iocb->ki_filp->f_path.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))
if (result)
goto out;
}
- nfs_revalidate_mapping(inode, iocb->ki_filp->f_mapping);
result = count;
if (!count)
goto out;
- result = generic_file_aio_write(iocb, buf, count, pos);
+ nfs_add_stats(inode, NFSIOS_NORMALWRITTENBYTES, count);
+ result = generic_file_aio_write(iocb, iov, nr_segs, pos);
+ /* Return error values for O_SYNC and IS_SYNC() */
+ if (result >= 0 && (IS_SYNC(inode) || (iocb->ki_filp->f_flags & O_SYNC))) {
+ int err = nfs_fsync(iocb->ki_filp, dentry, 1);
+ if (err < 0)
+ result = err;
+ }
out:
return result;
static int do_getlk(struct file *filp, int cmd, struct file_lock *fl)
{
- struct file_lock *cfl;
+ struct file_lock cfl;
struct inode *inode = filp->f_mapping->host;
int status = 0;
lock_kernel();
/* Try local locking first */
- cfl = posix_test_lock(filp, fl);
- if (cfl != NULL) {
- locks_copy_lock(fl, cfl);
+ if (posix_test_lock(filp, fl, &cfl)) {
+ fl->fl_start = cfl.fl_start;
+ fl->fl_end = cfl.fl_end;
+ fl->fl_type = cfl.fl_type;
+ fl->fl_pid = cfl.fl_pid;
goto out;
}
BUG();
}
if (res < 0)
- printk(KERN_WARNING "%s: VFS is out of sync with lock manager!\n",
- __FUNCTION__);
+ dprintk(KERN_WARNING "%s: VFS is out of sync with lock manager"
+ " - error %d!\n",
+ __FUNCTION__, res);
return res;
}
static int do_unlk(struct file *filp, int cmd, struct file_lock *fl)
{
struct inode *inode = filp->f_mapping->host;
- sigset_t oldset;
int status;
- rpc_clnt_sigmask(NFS_CLIENT(inode), &oldset);
/*
* Flush all pending writes before doing anything
* with locks..
else
status = do_vfs_lock(filp, fl);
unlock_kernel();
- rpc_clnt_sigunmask(NFS_CLIENT(inode), &oldset);
return status;
}
static int do_setlk(struct file *filp, int cmd, struct file_lock *fl)
{
struct inode *inode = filp->f_mapping->host;
- sigset_t oldset;
int status;
- rpc_clnt_sigmask(NFS_CLIENT(inode), &oldset);
/*
* Flush all pending writes before doing anything
* with locks..
nfs_sync_mapping(filp->f_mapping);
nfs_zap_caches(inode);
out:
- rpc_clnt_sigunmask(NFS_CLIENT(inode), &oldset);
return status;
}
inode->i_sb->s_id, inode->i_ino,
fl->fl_type, fl->fl_flags,
(long long)fl->fl_start, (long long)fl->fl_end);
-
- if (!inode)
- return -EINVAL;
+ nfs_inc_stats(inode, NFSIOS_VFSLOCK);
/* No mandatory locks over NFS */
if ((inode->i_mode & (S_ISGID | S_IXGRP)) == S_ISGID &&
*/
static int nfs_flock(struct file *filp, int cmd, struct file_lock *fl)
{
- struct inode * inode = filp->f_mapping->host;
-
dprintk("NFS: nfs_flock(f=%s/%ld, t=%x, fl=%x)\n",
- inode->i_sb->s_id, inode->i_ino,
+ filp->f_path.dentry->d_inode->i_sb->s_id,
+ filp->f_path.dentry->d_inode->i_ino,
fl->fl_type, fl->fl_flags);
- if (!inode)
- return -EINVAL;
-
/*
* No BSD flocks over NFS allowed.
* Note: we could try to fake a POSIX lock request here by
git://git.onelab.eu / linux-2.6.git / blobdiff