diff options
Diffstat (limited to 'fs/nilfs2/alloc.h')
| -rw-r--r-- | fs/nilfs2/alloc.h | 37 |
1 files changed, 13 insertions, 24 deletions
diff --git a/fs/nilfs2/alloc.h b/fs/nilfs2/alloc.h index 4bd6451b5703..046d876ea3e0 100644 --- a/fs/nilfs2/alloc.h +++ b/fs/nilfs2/alloc.h @@ -1,25 +1,11 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ /* - * alloc.h - persistent object (dat entry/disk inode) allocator/deallocator + * Persistent object (dat entry/disk inode) allocator/deallocator * * Copyright (C) 2006-2008 Nippon Telegraph and Telephone Corporation. * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * 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 - * - * Original code was written by Koji Sato <koji@osrg.net>. - * Two allocators were unified by Ryusuke Konishi <ryusuke@osrg.net>, - * Amagai Yoshiji <amagai@osrg.net>. + * Originally written by Koji Sato. + * Two allocators were unified by Ryusuke Konishi and Amagai Yoshiji. */ #ifndef _NILFS_ALLOC_H @@ -35,6 +21,8 @@ * * The number of entries per group is defined by the number of bits * that a bitmap block can maintain. + * + * Return: Number of entries per group. */ static inline unsigned long nilfs_palloc_entries_per_group(const struct inode *inode) @@ -42,16 +30,16 @@ nilfs_palloc_entries_per_group(const struct inode *inode) return 1UL << (inode->i_blkbits + 3 /* log2(8 = CHAR_BITS) */); } -int nilfs_palloc_init_blockgroup(struct inode *, unsigned); +int nilfs_palloc_init_blockgroup(struct inode *, unsigned int); int nilfs_palloc_get_entry_block(struct inode *, __u64, int, struct buffer_head **); -void *nilfs_palloc_block_get_entry(const struct inode *, __u64, - const struct buffer_head *, void *); +size_t nilfs_palloc_entry_offset(const struct inode *inode, __u64 nr, + const struct buffer_head *bh); int nilfs_palloc_count_max_entries(struct inode *, u64, u64 *); /** - * nilfs_palloc_req - persistent allocator request and reply + * struct nilfs_palloc_req - persistent allocator request and reply * @pr_entry_nr: entry number (vblocknr or inode number) * @pr_desc_bh: buffer head of the buffer containing block group descriptors * @pr_bitmap_bh: buffer head of the buffer containing a block group bitmap @@ -64,8 +52,8 @@ struct nilfs_palloc_req { struct buffer_head *pr_entry_bh; }; -int nilfs_palloc_prepare_alloc_entry(struct inode *, - struct nilfs_palloc_req *); +int nilfs_palloc_prepare_alloc_entry(struct inode *inode, + struct nilfs_palloc_req *req, bool wrap); void nilfs_palloc_commit_alloc_entry(struct inode *, struct nilfs_palloc_req *); void nilfs_palloc_abort_alloc_entry(struct inode *, struct nilfs_palloc_req *); @@ -77,6 +65,7 @@ int nilfs_palloc_freev(struct inode *, __u64 *, size_t); #define nilfs_set_bit_atomic ext2_set_bit_atomic #define nilfs_clear_bit_atomic ext2_clear_bit_atomic #define nilfs_find_next_zero_bit find_next_zero_bit_le +#define nilfs_find_next_bit find_next_bit_le /** * struct nilfs_bh_assoc - block offset and buffer head association |