diff options
Diffstat (limited to 'fs/nilfs2/dir.c')
| -rw-r--r-- | fs/nilfs2/dir.c | 59 |
1 files changed, 29 insertions, 30 deletions
diff --git a/fs/nilfs2/dir.c b/fs/nilfs2/dir.c index 6723d45a631a..e506f4f7120a 100644 --- a/fs/nilfs2/dir.c +++ b/fs/nilfs2/dir.c @@ -13,11 +13,7 @@ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - * - * Modified for NILFS by Amagai Yoshiji <amagai@osrg.net> + * Modified for NILFS by Amagai Yoshiji. */ /* * linux/fs/ext2/dir.c @@ -50,7 +46,7 @@ * nilfs uses block-sized chunks. Arguably, sector-sized ones would be * more robust, but we have what we have */ -static inline unsigned nilfs_chunk_size(struct inode *inode) +static inline unsigned int nilfs_chunk_size(struct inode *inode) { return inode->i_sb->s_blocksize; } @@ -65,9 +61,9 @@ static inline void nilfs_put_page(struct page *page) * Return the offset into page `page_nr' of the last valid * byte in that page, plus one. */ -static unsigned nilfs_last_byte(struct inode *inode, unsigned long page_nr) +static unsigned int nilfs_last_byte(struct inode *inode, unsigned long page_nr) { - unsigned last_byte = inode->i_size; + unsigned int last_byte = inode->i_size; last_byte -= page_nr << PAGE_SHIFT; if (last_byte > PAGE_SIZE) @@ -75,20 +71,22 @@ static unsigned nilfs_last_byte(struct inode *inode, unsigned long page_nr) return last_byte; } -static int nilfs_prepare_chunk(struct page *page, unsigned from, unsigned to) +static int nilfs_prepare_chunk(struct page *page, unsigned int from, + unsigned int to) { loff_t pos = page_offset(page) + from; + return __block_write_begin(page, pos, to - from, nilfs_get_block); } static void nilfs_commit_chunk(struct page *page, struct address_space *mapping, - unsigned from, unsigned to) + unsigned int from, unsigned int to) { struct inode *dir = mapping->host; loff_t pos = page_offset(page) + from; - unsigned len = to - from; - unsigned nr_dirty, copied; + unsigned int len = to - from; + unsigned int nr_dirty, copied; int err; nr_dirty = nilfs_page_count_clean_buffers(page, from, to); @@ -106,10 +104,10 @@ static bool nilfs_check_page(struct page *page) { struct inode *dir = page->mapping->host; struct super_block *sb = dir->i_sb; - unsigned chunk_size = nilfs_chunk_size(dir); + unsigned int chunk_size = nilfs_chunk_size(dir); char *kaddr = page_address(page); - unsigned offs, rec_len; - unsigned limit = PAGE_SIZE; + unsigned int offs, rec_len; + unsigned int limit = PAGE_SIZE; struct nilfs_dir_entry *p; char *error; @@ -259,7 +257,6 @@ static int nilfs_readdir(struct file *file, struct dir_context *ctx) unsigned int offset = pos & ~PAGE_MASK; unsigned long n = pos >> PAGE_SHIFT; unsigned long npages = dir_pages(inode); -/* unsigned chunk_mask = ~(nilfs_chunk_size(inode)-1); */ if (pos > inode->i_size - NILFS_DIR_REC_LEN(1)) return 0; @@ -321,7 +318,7 @@ nilfs_find_entry(struct inode *dir, const struct qstr *qstr, { const unsigned char *name = qstr->name; int namelen = qstr->len; - unsigned reclen = NILFS_DIR_REC_LEN(namelen); + unsigned int reclen = NILFS_DIR_REC_LEN(namelen); unsigned long start, n; unsigned long npages = dir_pages(dir); struct page *page = NULL; @@ -340,6 +337,7 @@ nilfs_find_entry(struct inode *dir, const struct qstr *qstr, n = start; do { char *kaddr; + page = nilfs_get_page(dir, n); if (!IS_ERR(page)) { kaddr = page_address(page); @@ -410,8 +408,8 @@ ino_t nilfs_inode_by_name(struct inode *dir, const struct qstr *qstr) void nilfs_set_link(struct inode *dir, struct nilfs_dir_entry *de, struct page *page, struct inode *inode) { - unsigned from = (char *) de - (char *) page_address(page); - unsigned to = from + nilfs_rec_len_from_disk(de->rec_len); + unsigned int from = (char *)de - (char *)page_address(page); + unsigned int to = from + nilfs_rec_len_from_disk(de->rec_len); struct address_space *mapping = page->mapping; int err; @@ -433,15 +431,15 @@ int nilfs_add_link(struct dentry *dentry, struct inode *inode) struct inode *dir = d_inode(dentry->d_parent); const unsigned char *name = dentry->d_name.name; int namelen = dentry->d_name.len; - unsigned chunk_size = nilfs_chunk_size(dir); - unsigned reclen = NILFS_DIR_REC_LEN(namelen); + unsigned int chunk_size = nilfs_chunk_size(dir); + unsigned int reclen = NILFS_DIR_REC_LEN(namelen); unsigned short rec_len, name_len; struct page *page = NULL; struct nilfs_dir_entry *de; unsigned long npages = dir_pages(dir); unsigned long n; char *kaddr; - unsigned from, to; + unsigned int from, to; int err; /* @@ -533,13 +531,14 @@ int nilfs_delete_entry(struct nilfs_dir_entry *dir, struct page *page) struct address_space *mapping = page->mapping; struct inode *inode = mapping->host; char *kaddr = page_address(page); - unsigned from = ((char *)dir - kaddr) & ~(nilfs_chunk_size(inode) - 1); - unsigned to = ((char *)dir - kaddr) + - nilfs_rec_len_from_disk(dir->rec_len); - struct nilfs_dir_entry *pde = NULL; - struct nilfs_dir_entry *de = (struct nilfs_dir_entry *)(kaddr + from); + unsigned int from, to; + struct nilfs_dir_entry *de, *pde = NULL; int err; + from = ((char *)dir - kaddr) & ~(nilfs_chunk_size(inode) - 1); + to = ((char *)dir - kaddr) + nilfs_rec_len_from_disk(dir->rec_len); + de = (struct nilfs_dir_entry *)(kaddr + from); + while ((char *)de < (char *)dir) { if (de->rec_len == 0) { nilfs_error(inode->i_sb, __func__, @@ -572,7 +571,7 @@ int nilfs_make_empty(struct inode *inode, struct inode *parent) { struct address_space *mapping = inode->i_mapping; struct page *page = grab_cache_page(mapping, 0); - unsigned chunk_size = nilfs_chunk_size(inode); + unsigned int chunk_size = nilfs_chunk_size(inode); struct nilfs_dir_entry *de; int err; void *kaddr; @@ -630,8 +629,8 @@ int nilfs_empty_dir(struct inode *inode) while ((char *)de <= kaddr) { if (de->rec_len == 0) { nilfs_error(inode->i_sb, __func__, - "zero-length directory entry " - "(kaddr=%p, de=%p)\n", kaddr, de); + "zero-length directory entry (kaddr=%p, de=%p)", + kaddr, de); goto not_empty; } if (de->inode != 0) { |