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_file_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);
.open = nfs_file_open,
.flush = nfs_file_flush,
.release = nfs_file_release,
- .fsync = nfs_fsync,
+ .fsync = nfs_file_fsync,
.lock = nfs_lock,
.flock = nfs_flock,
.splice_read = nfs_file_splice_read,
{
int res;
+ dprintk("NFS: open file(%s/%s)\n",
+ filp->f_path.dentry->d_parent->d_name.name,
+ filp->f_path.dentry->d_name.name);
+
res = nfs_check_flags(filp->f_flags);
if (res)
return res;
nfs_inc_stats(inode, NFSIOS_VFSOPEN);
lock_kernel();
- res = NFS_PROTO(inode)->file_open(inode, filp);
+ res = nfs_open(inode, filp);
unlock_kernel();
return res;
}
static int
nfs_file_release(struct inode *inode, struct file *filp)
{
+ struct dentry *dentry = filp->f_path.dentry;
+
+ dprintk("NFS: release(%s/%s)\n",
+ dentry->d_parent->d_name.name,
+ dentry->d_name.name);
+
/* Ensure that dirty pages are flushed out with the right creds */
if (filp->f_mode & FMODE_WRITE)
- nfs_wb_all(filp->f_path.dentry->d_inode);
+ nfs_wb_all(dentry->d_inode);
nfs_inc_stats(inode, NFSIOS_VFSRELEASE);
- return NFS_PROTO(inode)->file_release(inode, filp);
+ return nfs_release(inode, filp);
}
/**
static loff_t nfs_file_llseek(struct file *filp, loff_t offset, int origin)
{
+ loff_t loff;
+
+ dprintk("NFS: llseek file(%s/%s, %lld, %d)\n",
+ filp->f_path.dentry->d_parent->d_name.name,
+ filp->f_path.dentry->d_name.name,
+ offset, origin);
+
/* origin == SEEK_END => we must revalidate the cached file length */
if (origin == SEEK_END) {
struct inode *inode = filp->f_mapping->host;
if (retval < 0)
return (loff_t)retval;
}
- return remote_llseek(filp, offset, origin);
+ lock_kernel(); /* BKL needed? */
+ loff = generic_file_llseek_unlocked(filp, offset, origin);
+ unlock_kernel();
+ return loff;
}
/*
- * Helper for nfs_file_flush() and nfs_fsync()
+ * Helper for nfs_file_flush() and nfs_file_fsync()
*
* Notice that it clears the NFS_CONTEXT_ERROR_WRITE before synching to
* disk, but it retrieves and clears ctx->error after synching, despite
/*
* Flush all dirty pages, and check for write errors.
- *
*/
static int
nfs_file_flush(struct file *file, fl_owner_t id)
{
struct nfs_open_context *ctx = nfs_file_open_context(file);
- struct inode *inode = file->f_path.dentry->d_inode;
+ struct dentry *dentry = file->f_path.dentry;
+ struct inode *inode = dentry->d_inode;
int status;
- dfprintk(VFS, "nfs: flush(%s/%ld)\n", inode->i_sb->s_id, inode->i_ino);
+ dprintk("NFS: flush(%s/%s)\n",
+ dentry->d_parent->d_name.name,
+ dentry->d_name.name);
if ((file->f_mode & FMODE_WRITE) == 0)
return 0;
if (iocb->ki_filp->f_flags & O_DIRECT)
return nfs_file_direct_read(iocb, iov, nr_segs, pos);
- dfprintk(VFS, "nfs: read(%s/%s, %lu@%lu)\n",
+ dprintk("NFS: read(%s/%s, %lu@%lu)\n",
dentry->d_parent->d_name.name, dentry->d_name.name,
(unsigned long) count, (unsigned long) pos);
struct inode *inode = dentry->d_inode;
ssize_t res;
- dfprintk(VFS, "nfs: splice_read(%s/%s, %lu@%Lu)\n",
+ dprintk("NFS: splice_read(%s/%s, %lu@%Lu)\n",
dentry->d_parent->d_name.name, dentry->d_name.name,
(unsigned long) count, (unsigned long long) *ppos);
struct inode *inode = dentry->d_inode;
int status;
- dfprintk(VFS, "nfs: mmap(%s/%s)\n",
+ dprintk("NFS: mmap(%s/%s)\n",
dentry->d_parent->d_name.name, dentry->d_name.name);
status = nfs_revalidate_mapping(inode, file->f_mapping);
* whether any write errors occurred for this process.
*/
static int
-nfs_fsync(struct file *file, struct dentry *dentry, int datasync)
+nfs_file_fsync(struct file *file, struct dentry *dentry, int datasync)
{
struct nfs_open_context *ctx = nfs_file_open_context(file);
struct inode *inode = dentry->d_inode;
- dfprintk(VFS, "nfs: fsync(%s/%ld)\n", inode->i_sb->s_id, inode->i_ino);
+ dprintk("NFS: fsync file(%s/%s) datasync %d\n",
+ dentry->d_parent->d_name.name, dentry->d_name.name,
+ datasync);
nfs_inc_stats(inode, NFSIOS_VFSFSYNC);
return nfs_do_fsync(ctx, inode);
struct page *page;
index = pos >> PAGE_CACHE_SHIFT;
+ dfprintk(PAGECACHE, "NFS: write_begin(%s/%s(%ld), %u@%lld)\n",
+ file->f_path.dentry->d_parent->d_name.name,
+ file->f_path.dentry->d_name.name,
+ mapping->host->i_ino, len, (long long) pos);
+
page = __grab_cache_page(mapping, index);
if (!page)
return -ENOMEM;
unsigned offset = pos & (PAGE_CACHE_SIZE - 1);
int status;
+ dfprintk(PAGECACHE, "NFS: write_end(%s/%s(%ld), %u@%lld)\n",
+ file->f_path.dentry->d_parent->d_name.name,
+ file->f_path.dentry->d_name.name,
+ mapping->host->i_ino, len, (long long) pos);
+
+ /*
+ * Zero any uninitialised parts of the page, and then mark the page
+ * as up to date if it turns out that we're extending the file.
+ */
+ if (!PageUptodate(page)) {
+ unsigned pglen = nfs_page_length(page);
+ unsigned end = offset + len;
+
+ if (pglen == 0) {
+ zero_user_segments(page, 0, offset,
+ end, PAGE_CACHE_SIZE);
+ SetPageUptodate(page);
+ } else if (end >= pglen) {
+ zero_user_segment(page, end, PAGE_CACHE_SIZE);
+ if (offset == 0)
+ SetPageUptodate(page);
+ } else
+ zero_user_segment(page, pglen, PAGE_CACHE_SIZE);
+ }
+
lock_kernel();
status = nfs_updatepage(file, page, offset, copied);
unlock_kernel();
static void nfs_invalidate_page(struct page *page, unsigned long offset)
{
+ dfprintk(PAGECACHE, "NFS: invalidate_page(%p, %lu)\n", page, offset);
+
if (offset != 0)
return;
/* Cancel any unstarted writes on this page */
static int nfs_release_page(struct page *page, gfp_t gfp)
{
+ dfprintk(PAGECACHE, "NFS: release_page(%p)\n", page);
+
/* 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);
+ struct inode *inode = page->mapping->host;
+
+ dfprintk(PAGECACHE, "NFS: launder_page(%ld, %llu)\n",
+ inode->i_ino, (long long)page_offset(page));
+
+ return nfs_wb_page(inode, page);
}
const struct address_space_operations nfs_file_aops = {
static int nfs_vm_page_mkwrite(struct vm_area_struct *vma, struct page *page)
{
struct file *filp = vma->vm_file;
+ struct dentry *dentry = filp->f_path.dentry;
unsigned pagelen;
int ret = -EINVAL;
struct address_space *mapping;
+ dfprintk(PAGECACHE, "NFS: vm_page_mkwrite(%s/%s(%ld), offset %lld)\n",
+ dentry->d_parent->d_name.name, dentry->d_name.name,
+ filp->f_mapping->host->i_ino,
+ (long long)page_offset(page));
+
lock_page(page);
mapping = page->mapping;
- if (mapping != vma->vm_file->f_path.dentry->d_inode->i_mapping)
+ if (mapping != dentry->d_inode->i_mapping)
goto out_unlock;
ret = 0;
if (iocb->ki_filp->f_flags & O_DIRECT)
return nfs_file_direct_write(iocb, iov, nr_segs, pos);
- dfprintk(VFS, "nfs: write(%s/%s(%ld), %lu@%Ld)\n",
+ dprintk("NFS: write(%s/%s, %lu@%Ld)\n",
dentry->d_parent->d_name.name, dentry->d_name.name,
- inode->i_ino, (unsigned long) count, (long long) pos);
+ (unsigned long) count, (long long) pos);
result = -EBUSY;
if (IS_SWAPFILE(inode))
* This makes locking act as a cache coherency point.
*/
nfs_sync_mapping(filp->f_mapping);
- nfs_zap_caches(inode);
+ if (!nfs_have_delegation(inode, FMODE_READ))
+ nfs_zap_caches(inode);
out:
return status;
}
*/
static int nfs_lock(struct file *filp, int cmd, struct file_lock *fl)
{
- struct inode * inode = filp->f_mapping->host;
+ struct inode *inode = filp->f_mapping->host;
+ int ret = -ENOLCK;
- dprintk("NFS: nfs_lock(f=%s/%ld, t=%x, fl=%x, r=%Ld:%Ld)\n",
- inode->i_sb->s_id, inode->i_ino,
+ dprintk("NFS: lock(%s/%s, t=%x, fl=%x, r=%lld:%lld)\n",
+ filp->f_path.dentry->d_parent->d_name.name,
+ filp->f_path.dentry->d_name.name,
fl->fl_type, fl->fl_flags,
(long long)fl->fl_start, (long long)fl->fl_end);
+
nfs_inc_stats(inode, NFSIOS_VFSLOCK);
/* No mandatory locks over NFS */
if (__mandatory_lock(inode) && fl->fl_type != F_UNLCK)
- return -ENOLCK;
+ goto out_err;
+
+ if (NFS_PROTO(inode)->lock_check_bounds != NULL) {
+ ret = NFS_PROTO(inode)->lock_check_bounds(fl);
+ if (ret < 0)
+ goto out_err;
+ }
if (IS_GETLK(cmd))
- return do_getlk(filp, cmd, fl);
- if (fl->fl_type == F_UNLCK)
- return do_unlk(filp, cmd, fl);
- return do_setlk(filp, cmd, fl);
+ ret = do_getlk(filp, cmd, fl);
+ else if (fl->fl_type == F_UNLCK)
+ ret = do_unlk(filp, cmd, fl);
+ else
+ ret = do_setlk(filp, cmd, fl);
+out_err:
+ return ret;
}
/*
*/
static int nfs_flock(struct file *filp, int cmd, struct file_lock *fl)
{
- dprintk("NFS: nfs_flock(f=%s/%ld, t=%x, fl=%x)\n",
- filp->f_path.dentry->d_inode->i_sb->s_id,
- filp->f_path.dentry->d_inode->i_ino,
+ dprintk("NFS: flock(%s/%s, t=%x, fl=%x)\n",
+ filp->f_path.dentry->d_parent->d_name.name,
+ filp->f_path.dentry->d_name.name,
fl->fl_type, fl->fl_flags);
/*
return do_setlk(filp, cmd, fl);
}
+/*
+ * There is no protocol support for leases, so we have no way to implement
+ * them correctly in the face of opens by other clients.
+ */
static int nfs_setlease(struct file *file, long arg, struct file_lock **fl)
{
- /*
- * There is no protocol support for leases, so we have no way
- * to implement them correctly in the face of opens by other
- * clients.
- */
+ dprintk("NFS: setlease(%s/%s, arg=%ld)\n",
+ file->f_path.dentry->d_parent->d_name.name,
+ file->f_path.dentry->d_name.name, arg);
+
return -EINVAL;
}
git.openpandora.org / pandora-kernel.git / blobdiff