#include <linux/pagemap.h>
#include <linux/highmem.h>
-#include <linux/smp_lock.h>
+#include <linux/swap.h>
#include "sysv.h"
static int sysv_readdir(struct file *, void *, filldir_t);
const struct file_operations sysv_dir_operations = {
+ .llseek = generic_file_llseek,
.read = generic_read_dir,
.readdir = sysv_readdir,
- .fsync = sysv_sync_file,
+ .fsync = simple_fsync,
};
static inline void dir_put_page(struct page *page)
return (inode->i_size+PAGE_CACHE_SIZE-1)>>PAGE_CACHE_SHIFT;
}
-static int dir_commit_chunk(struct page *page, unsigned from, unsigned to)
+static int dir_commit_chunk(struct page *page, loff_t pos, unsigned len)
{
- struct inode *dir = (struct inode *)page->mapping->host;
+ struct address_space *mapping = page->mapping;
+ struct inode *dir = mapping->host;
int err = 0;
- page->mapping->a_ops->commit_write(NULL, page, from, to);
+ block_write_end(NULL, mapping, pos, len, len, page, NULL);
+ if (pos+len > dir->i_size) {
+ i_size_write(dir, pos+len);
+ mark_inode_dirty(dir);
+ }
if (IS_DIRSYNC(dir))
err = write_one_page(page, 1);
else
{
struct address_space *mapping = dir->i_mapping;
struct page *page = read_mapping_page(mapping, n, NULL);
- if (!IS_ERR(page)) {
- wait_on_page_locked(page);
+ if (!IS_ERR(page))
kmap(page);
- if (!PageUptodate(page))
- goto fail;
- }
return page;
-
-fail:
- dir_put_page(page);
- return ERR_PTR(-EIO);
}
static int sysv_readdir(struct file * filp, void * dirent, filldir_t filldir)
unsigned long n = pos >> PAGE_CACHE_SHIFT;
unsigned long npages = dir_pages(inode);
- lock_kernel();
-
pos = (pos + SYSV_DIRSIZE-1) & ~(SYSV_DIRSIZE-1);
if (pos >= inode->i_size)
goto done;
done:
filp->f_pos = ((loff_t)n << PAGE_CACHE_SHIFT) | offset;
- unlock_kernel();
return 0;
}
name, de->name))
goto found;
}
+ dir_put_page(page);
}
- dir_put_page(page);
if (++n >= npages)
n = 0;
unsigned long npages = dir_pages(dir);
unsigned long n;
char *kaddr;
- unsigned from, to;
+ loff_t pos;
int err;
/* We take care of directory expansion in the same loop */
return -EINVAL;
got_it:
- from = (char*)de - (char*)page_address(page);
- to = from + SYSV_DIRSIZE;
+ pos = page_offset(page) +
+ (char*)de - (char*)page_address(page);
lock_page(page);
- err = page->mapping->a_ops->prepare_write(NULL, page, from, to);
+ err = __sysv_write_begin(NULL, page->mapping, pos, SYSV_DIRSIZE,
+ AOP_FLAG_UNINTERRUPTIBLE, &page, NULL);
if (err)
goto out_unlock;
memcpy (de->name, name, namelen);
memset (de->name + namelen, 0, SYSV_DIRSIZE - namelen - 2);
de->inode = cpu_to_fs16(SYSV_SB(inode->i_sb), inode->i_ino);
- err = dir_commit_chunk(page, from, to);
+ err = dir_commit_chunk(page, pos, SYSV_DIRSIZE);
dir->i_mtime = dir->i_ctime = CURRENT_TIME_SEC;
mark_inode_dirty(dir);
out_page:
struct address_space *mapping = page->mapping;
struct inode *inode = (struct inode*)mapping->host;
char *kaddr = (char*)page_address(page);
- unsigned from = (char*)de - kaddr;
- unsigned to = from + SYSV_DIRSIZE;
+ loff_t pos = page_offset(page) + (char *)de - kaddr;
int err;
lock_page(page);
- err = mapping->a_ops->prepare_write(NULL, page, from, to);
+ err = __sysv_write_begin(NULL, mapping, pos, SYSV_DIRSIZE,
+ AOP_FLAG_UNINTERRUPTIBLE, &page, NULL);
BUG_ON(err);
de->inode = 0;
- err = dir_commit_chunk(page, from, to);
+ err = dir_commit_chunk(page, pos, SYSV_DIRSIZE);
dir_put_page(page);
inode->i_ctime = inode->i_mtime = CURRENT_TIME_SEC;
mark_inode_dirty(inode);
if (!page)
return -ENOMEM;
- kmap(page);
- err = mapping->a_ops->prepare_write(NULL, page, 0, 2 * SYSV_DIRSIZE);
+ err = __sysv_write_begin(NULL, mapping, 0, 2 * SYSV_DIRSIZE,
+ AOP_FLAG_UNINTERRUPTIBLE, &page, NULL);
if (err) {
unlock_page(page);
goto fail;
}
+ kmap(page);
base = (char*)page_address(page);
memset(base, 0, PAGE_CACHE_SIZE);
de->inode = cpu_to_fs16(SYSV_SB(inode->i_sb), dir->i_ino);
strcpy(de->name,"..");
+ kunmap(page);
err = dir_commit_chunk(page, 0, 2 * SYSV_DIRSIZE);
fail:
- kunmap(page);
page_cache_release(page);
return err;
}
void sysv_set_link(struct sysv_dir_entry *de, struct page *page,
struct inode *inode)
{
- struct inode *dir = (struct inode*)page->mapping->host;
- unsigned from = (char *)de-(char*)page_address(page);
- unsigned to = from + SYSV_DIRSIZE;
+ struct address_space *mapping = page->mapping;
+ struct inode *dir = mapping->host;
+ loff_t pos = page_offset(page) +
+ (char *)de-(char*)page_address(page);
int err;
lock_page(page);
- err = page->mapping->a_ops->prepare_write(NULL, page, from, to);
+ err = __sysv_write_begin(NULL, mapping, pos, SYSV_DIRSIZE,
+ AOP_FLAG_UNINTERRUPTIBLE, &page, NULL);
BUG_ON(err);
de->inode = cpu_to_fs16(SYSV_SB(inode->i_sb), inode->i_ino);
- err = dir_commit_chunk(page, from, to);
+ err = dir_commit_chunk(page, pos, SYSV_DIRSIZE);
dir_put_page(page);
dir->i_mtime = dir->i_ctime = CURRENT_TIME_SEC;
mark_inode_dirty(dir);