diff options
Diffstat (limited to 'fs/sysv/dir.c')
| -rw-r--r-- | fs/sysv/dir.c | 50 |
1 files changed, 30 insertions, 20 deletions
diff --git a/fs/sysv/dir.c b/fs/sysv/dir.c index e566b38..56f6552 100644 --- a/fs/sysv/dir.c +++ b/fs/sysv/dir.c @@ -16,6 +16,7 @@ #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); @@ -37,12 +38,17 @@ static inline unsigned long dir_pages(struct inode *inode) 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 @@ -186,7 +192,7 @@ int sysv_add_link(struct dentry *dentry, struct inode *inode) 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 */ @@ -212,16 +218,17 @@ int sysv_add_link(struct dentry *dentry, struct inode *inode) 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: @@ -238,15 +245,15 @@ int sysv_delete_entry(struct sysv_dir_entry *de, struct page *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); @@ -263,12 +270,13 @@ int sysv_make_empty(struct inode *inode, struct inode *dir) 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); @@ -280,9 +288,9 @@ int sysv_make_empty(struct inode *inode, struct inode *dir) 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; } @@ -336,16 +344,18 @@ not_empty: 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); |
