diff options
| -rw-r--r-- | fs/minix/dir.c | 49 | ||||
| -rw-r--r-- | fs/minix/inode.c | 23 | ||||
| -rw-r--r-- | fs/minix/minix.h | 3 |
3 files changed, 53 insertions, 22 deletions
diff --git a/fs/minix/dir.c b/fs/minix/dir.c index e207cbe..f704338 100644 --- a/fs/minix/dir.c +++ b/fs/minix/dir.c @@ -9,8 +9,10 @@ */ #include "minix.h" +#include <linux/buffer_head.h> #include <linux/highmem.h> #include <linux/smp_lock.h> +#include <linux/swap.h> typedef struct minix_dir_entry minix_dirent; typedef struct minix3_dir_entry minix3_dirent; @@ -48,11 +50,17 @@ 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 @@ -220,7 +228,7 @@ int minix_add_link(struct dentry *dentry, struct inode *inode) char *kaddr, *p; minix_dirent *de; minix3_dirent *de3; - unsigned from, to; + loff_t pos; int err; char *namx = NULL; __u32 inumber; @@ -272,9 +280,9 @@ int minix_add_link(struct dentry *dentry, struct inode *inode) return -EINVAL; got_it: - from = p - (char*)page_address(page); - to = from + sbi->s_dirsize; - err = page->mapping->a_ops->prepare_write(NULL, page, from, to); + pos = (page->index >> PAGE_CACHE_SHIFT) + p - (char*)page_address(page); + err = __minix_write_begin(NULL, page->mapping, pos, sbi->s_dirsize, + AOP_FLAG_UNINTERRUPTIBLE, &page, NULL); if (err) goto out_unlock; memcpy (namx, name, namelen); @@ -285,7 +293,7 @@ got_it: memset (namx + namelen, 0, sbi->s_dirsize - namelen - 2); de->inode = inode->i_ino; } - err = dir_commit_chunk(page, from, to); + err = dir_commit_chunk(page, pos, sbi->s_dirsize); dir->i_mtime = dir->i_ctime = CURRENT_TIME_SEC; mark_inode_dirty(dir); out_put: @@ -302,15 +310,16 @@ int minix_delete_entry(struct minix_dir_entry *de, struct page *page) struct address_space *mapping = page->mapping; struct inode *inode = (struct inode*)mapping->host; char *kaddr = page_address(page); - unsigned from = (char*)de - kaddr; - unsigned to = from + minix_sb(inode->i_sb)->s_dirsize; + loff_t pos = page_offset(page) + (char*)de - kaddr; + unsigned len = minix_sb(inode->i_sb)->s_dirsize; int err; lock_page(page); - err = mapping->a_ops->prepare_write(NULL, page, from, to); + err = __minix_write_begin(NULL, mapping, pos, len, + AOP_FLAG_UNINTERRUPTIBLE, &page, NULL); if (err == 0) { de->inode = 0; - err = dir_commit_chunk(page, from, to); + err = dir_commit_chunk(page, pos, len); } else { unlock_page(page); } @@ -330,7 +339,8 @@ int minix_make_empty(struct inode *inode, struct inode *dir) if (!page) return -ENOMEM; - err = mapping->a_ops->prepare_write(NULL, page, 0, 2 * sbi->s_dirsize); + err = __minix_write_begin(NULL, mapping, 0, 2 * sbi->s_dirsize, + AOP_FLAG_UNINTERRUPTIBLE, &page, NULL); if (err) { unlock_page(page); goto fail; @@ -421,17 +431,20 @@ not_empty: void minix_set_link(struct minix_dir_entry *de, struct page *page, struct inode *inode) { - struct inode *dir = (struct inode*)page->mapping->host; + struct address_space *mapping = page->mapping; + struct inode *dir = mapping->host; struct minix_sb_info *sbi = minix_sb(dir->i_sb); - unsigned from = (char *)de-(char*)page_address(page); - unsigned to = from + sbi->s_dirsize; + 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 = __minix_write_begin(NULL, mapping, pos, sbi->s_dirsize, + AOP_FLAG_UNINTERRUPTIBLE, &page, NULL); if (err == 0) { de->inode = inode->i_ino; - err = dir_commit_chunk(page, from, to); + err = dir_commit_chunk(page, pos, sbi->s_dirsize); } else { unlock_page(page); } diff --git a/fs/minix/inode.c b/fs/minix/inode.c index 43668d7..f4f3343 100644 --- a/fs/minix/inode.c +++ b/fs/minix/inode.c @@ -346,24 +346,39 @@ static int minix_writepage(struct page *page, struct writeback_control *wbc) { return block_write_full_page(page, minix_get_block, wbc); } + static int minix_readpage(struct file *file, struct page *page) { return block_read_full_page(page,minix_get_block); } -static int minix_prepare_write(struct file *file, struct page *page, unsigned from, unsigned to) + +int __minix_write_begin(struct file *file, struct address_space *mapping, + loff_t pos, unsigned len, unsigned flags, + struct page **pagep, void **fsdata) { - return block_prepare_write(page,from,to,minix_get_block); + return block_write_begin(file, mapping, pos, len, flags, pagep, fsdata, + minix_get_block); } + +static int minix_write_begin(struct file *file, struct address_space *mapping, + loff_t pos, unsigned len, unsigned flags, + struct page **pagep, void **fsdata) +{ + *pagep = NULL; + return __minix_write_begin(file, mapping, pos, len, flags, pagep, fsdata); +} + static sector_t minix_bmap(struct address_space *mapping, sector_t block) { return generic_block_bmap(mapping,block,minix_get_block); } + static const struct address_space_operations minix_aops = { .readpage = minix_readpage, .writepage = minix_writepage, .sync_page = block_sync_page, - .prepare_write = minix_prepare_write, - .commit_write = generic_commit_write, + .write_begin = minix_write_begin, + .write_end = generic_write_end, .bmap = minix_bmap }; diff --git a/fs/minix/minix.h b/fs/minix/minix.h index 73ef84f..ac5d3a7 100644 --- a/fs/minix/minix.h +++ b/fs/minix/minix.h @@ -54,6 +54,9 @@ extern int minix_new_block(struct inode * inode); extern void minix_free_block(struct inode *inode, unsigned long block); extern unsigned long minix_count_free_blocks(struct minix_sb_info *sbi); extern int minix_getattr(struct vfsmount *, struct dentry *, struct kstat *); +extern int __minix_write_begin(struct file *file, struct address_space *mapping, + loff_t pos, unsigned len, unsigned flags, + struct page **pagep, void **fsdata); extern void V1_minix_truncate(struct inode *); extern void V2_minix_truncate(struct inode *); |