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    Subject[PATCH 10/27] nilfs2: persistent object allocator
    Date
    This adds common functions to allocate or deallocate entries with
    bitmaps on a meta data file. This feature is used by the DAT and
    ifile.

    Signed-off-by: Koji Sato <sato.koji@lab.ntt.co.jp>
    Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
    Signed-off-by: Yoshiji Amagai <amagai.yoshiji@lab.ntt.co.jp>
    ---
    fs/nilfs2/alloc.c | 504 +++++++++++++++++++++++++++++++++++++++++++++++++++++
    fs/nilfs2/alloc.h | 72 ++++++++
    2 files changed, 576 insertions(+), 0 deletions(-)
    create mode 100644 fs/nilfs2/alloc.c
    create mode 100644 fs/nilfs2/alloc.h

    diff --git a/fs/nilfs2/alloc.c b/fs/nilfs2/alloc.c
    new file mode 100644
    index 0000000..d69e6ae
    --- /dev/null
    +++ b/fs/nilfs2/alloc.c
    @@ -0,0 +1,504 @@
    +/*
    + * alloc.c - NILFS dat/inode allocator
    + *
    + * 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>.
    + */
    +
    +#include <linux/types.h>
    +#include <linux/buffer_head.h>
    +#include <linux/fs.h>
    +#include <linux/bitops.h>
    +#include "mdt.h"
    +#include "alloc.h"
    +
    +
    +static inline unsigned long
    +nilfs_palloc_groups_per_desc_block(const struct inode *inode)
    +{
    + return (1UL << inode->i_blkbits) /
    + sizeof(struct nilfs_palloc_group_desc);
    +}
    +
    +static inline unsigned long
    +nilfs_palloc_groups_count(const struct inode *inode)
    +{
    + return 1UL << (BITS_PER_LONG - (inode->i_blkbits + 3 /* log2(8) */));
    +}
    +
    +int nilfs_palloc_init_blockgroup(struct inode *inode, unsigned entry_size)
    +{
    + struct nilfs_mdt_info *mi = NILFS_MDT(inode);
    +
    + mi->mi_bgl = kmalloc(sizeof(*mi->mi_bgl), GFP_NOFS);
    + if (!mi->mi_bgl)
    + return -ENOMEM;
    +
    + bgl_lock_init(mi->mi_bgl);
    +
    + nilfs_mdt_set_entry_size(inode, entry_size, 0);
    +
    + mi->mi_blocks_per_group =
    + DIV_ROUND_UP(nilfs_palloc_entries_per_group(inode),
    + mi->mi_entries_per_block) + 1;
    + /* Number of blocks in a group including entry blocks and
    + a bitmap block */
    + mi->mi_blocks_per_desc_block =
    + nilfs_palloc_groups_per_desc_block(inode) *
    + mi->mi_blocks_per_group + 1;
    + /* Number of blocks per descriptor including the
    + descriptor block */
    + return 0;
    +}
    +
    +static unsigned long nilfs_palloc_group(const struct inode *inode, __u64 nr,
    + unsigned long *offset)
    +{
    + __u64 group = nr;
    +
    + *offset = do_div(group, nilfs_palloc_entries_per_group(inode));
    + return group;
    +}
    +
    +static unsigned long
    +nilfs_palloc_desc_blkoff(const struct inode *inode, unsigned long group)
    +{
    + unsigned long desc_block =
    + group / nilfs_palloc_groups_per_desc_block(inode);
    + return desc_block * NILFS_MDT(inode)->mi_blocks_per_desc_block;
    +}
    +
    +static unsigned long
    +nilfs_palloc_bitmap_blkoff(const struct inode *inode, unsigned long group)
    +{
    + unsigned long desc_offset =
    + group % nilfs_palloc_groups_per_desc_block(inode);
    + return nilfs_palloc_desc_blkoff(inode, group) + 1 +
    + desc_offset * NILFS_MDT(inode)->mi_blocks_per_group;
    +}
    +
    +static unsigned long
    +nilfs_palloc_group_desc_nfrees(struct inode *inode, unsigned long group,
    + const struct nilfs_palloc_group_desc *desc)
    +{
    + unsigned long nfree;
    +
    + spin_lock(nilfs_mdt_bgl_lock(inode, group));
    + nfree = le32_to_cpu(desc->pg_nfrees);
    + spin_unlock(nilfs_mdt_bgl_lock(inode, group));
    + return nfree;
    +}
    +
    +static void
    +nilfs_palloc_group_desc_add_entries(struct inode *inode,
    + unsigned long group,
    + struct nilfs_palloc_group_desc *desc,
    + u32 n)
    +{
    + spin_lock(nilfs_mdt_bgl_lock(inode, group));
    + le32_add_cpu(&desc->pg_nfrees, n);
    + spin_unlock(nilfs_mdt_bgl_lock(inode, group));
    +}
    +
    +static unsigned long
    +nilfs_palloc_entry_blkoff(const struct inode *inode, __u64 nr)
    +{
    + unsigned long group, group_offset;
    +
    + group = nilfs_palloc_group(inode, nr, &group_offset);
    +
    + return nilfs_palloc_bitmap_blkoff(inode, group) + 1 +
    + group_offset / NILFS_MDT(inode)->mi_entries_per_block;
    +}
    +
    +static void nilfs_palloc_desc_block_init(struct inode *inode,
    + struct buffer_head *bh, void *kaddr)
    +{
    + struct nilfs_palloc_group_desc *desc = kaddr + bh_offset(bh);
    + unsigned long n = nilfs_palloc_groups_per_desc_block(inode);
    + __le32 nfrees;
    +
    + nfrees = cpu_to_le32(nilfs_palloc_entries_per_group(inode));
    + while (n-- > 0) {
    + desc->pg_nfrees = nfrees;
    + desc++;
    + }
    +}
    +
    +static int nilfs_palloc_get_desc_block(struct inode *inode,
    + unsigned long group,
    + int create, struct buffer_head **bhp)
    +{
    + return nilfs_mdt_get_block(inode,
    + nilfs_palloc_desc_blkoff(inode, group),
    + create, nilfs_palloc_desc_block_init, bhp);
    +}
    +
    +static int nilfs_palloc_get_bitmap_block(struct inode *inode,
    + unsigned long group,
    + int create, struct buffer_head **bhp)
    +{
    + return nilfs_mdt_get_block(inode,
    + nilfs_palloc_bitmap_blkoff(inode, group),
    + create, NULL, bhp);
    +}
    +
    +int nilfs_palloc_get_entry_block(struct inode *inode, __u64 nr,
    + int create, struct buffer_head **bhp)
    +{
    + return nilfs_mdt_get_block(inode, nilfs_palloc_entry_blkoff(inode, nr),
    + create, NULL, bhp);
    +}
    +
    +static struct nilfs_palloc_group_desc *
    +nilfs_palloc_block_get_group_desc(const struct inode *inode,
    + unsigned long group,
    + const struct buffer_head *bh, void *kaddr)
    +{
    + return (struct nilfs_palloc_group_desc *)(kaddr + bh_offset(bh)) +
    + group % nilfs_palloc_groups_per_desc_block(inode);
    +}
    +
    +static unsigned char *
    +nilfs_palloc_block_get_bitmap(const struct inode *inode,
    + const struct buffer_head *bh, void *kaddr)
    +{
    + return (unsigned char *)(kaddr + bh_offset(bh));
    +}
    +
    +void *nilfs_palloc_block_get_entry(const struct inode *inode, __u64 nr,
    + const struct buffer_head *bh, void *kaddr)
    +{
    + unsigned long entry_offset, group_offset;
    +
    + nilfs_palloc_group(inode, nr, &group_offset);
    + entry_offset = group_offset % NILFS_MDT(inode)->mi_entries_per_block;
    +
    + return kaddr + bh_offset(bh) +
    + entry_offset * NILFS_MDT(inode)->mi_entry_size;
    +}
    +
    +static int nilfs_palloc_find_available_slot(struct inode *inode,
    + unsigned long group,
    + unsigned long target,
    + unsigned char *bitmap,
    + int bsize) /* size in bits */
    +{
    + int curr, pos, end, i;
    +
    + if (target > 0) {
    + end = (target + BITS_PER_LONG - 1) & ~(BITS_PER_LONG - 1);
    + if (end > bsize)
    + end = bsize;
    + pos = nilfs_find_next_zero_bit(bitmap, end, target);
    + if (pos < end &&
    + !nilfs_set_bit_atomic(
    + nilfs_mdt_bgl_lock(inode, group), pos, bitmap))
    + return pos;
    + } else
    + end = 0;
    +
    + for (i = 0, curr = end;
    + i < bsize;
    + i += BITS_PER_LONG, curr += BITS_PER_LONG) {
    + /* wrap around */
    + if (curr >= bsize)
    + curr = 0;
    + while (*((unsigned long *)bitmap + curr / BITS_PER_LONG)
    + != ~0UL) {
    + end = curr + BITS_PER_LONG;
    + if (end > bsize)
    + end = bsize;
    + pos = nilfs_find_next_zero_bit(bitmap, end, curr);
    + if ((pos < end) &&
    + !nilfs_set_bit_atomic(
    + nilfs_mdt_bgl_lock(inode, group), pos,
    + bitmap))
    + return pos;
    + }
    + }
    + return -ENOSPC;
    +}
    +
    +static unsigned long
    +nilfs_palloc_rest_groups_in_desc_block(const struct inode *inode,
    + unsigned long curr, unsigned long max)
    +{
    + return min_t(unsigned long,
    + nilfs_palloc_groups_per_desc_block(inode) -
    + curr % nilfs_palloc_groups_per_desc_block(inode),
    + max - curr + 1);
    +}
    +
    +int nilfs_palloc_prepare_alloc_entry(struct inode *inode,
    + struct nilfs_palloc_req *req)
    +{
    + struct buffer_head *desc_bh, *bitmap_bh;
    + struct nilfs_palloc_group_desc *desc;
    + unsigned char *bitmap;
    + void *desc_kaddr, *bitmap_kaddr;
    + unsigned long group, maxgroup, ngroups;
    + unsigned long group_offset, maxgroup_offset;
    + unsigned long n, entries_per_group, groups_per_desc_block;
    + unsigned long i, j;
    + int pos, ret;
    +
    + ngroups = nilfs_palloc_groups_count(inode);
    + maxgroup = ngroups - 1;
    + group = nilfs_palloc_group(inode, req->pr_entry_nr, &group_offset);
    + entries_per_group = nilfs_palloc_entries_per_group(inode);
    + groups_per_desc_block = nilfs_palloc_groups_per_desc_block(inode);
    +
    + for (i = 0; i < ngroups; i += n) {
    + if (group >= ngroups) {
    + /* wrap around */
    + group = 0;
    + maxgroup = nilfs_palloc_group(inode, req->pr_entry_nr,
    + &maxgroup_offset) - 1;
    + }
    + ret = nilfs_palloc_get_desc_block(inode, group, 1, &desc_bh);
    + if (ret < 0)
    + return ret;
    + desc_kaddr = kmap(desc_bh->b_page);
    + desc = nilfs_palloc_block_get_group_desc(
    + inode, group, desc_bh, desc_kaddr);
    + n = nilfs_palloc_rest_groups_in_desc_block(inode, group,
    + maxgroup);
    + for (j = 0; j < n; j++, desc++, group++) {
    + if (nilfs_palloc_group_desc_nfrees(inode, group, desc)
    + > 0) {
    + ret = nilfs_palloc_get_bitmap_block(
    + inode, group, 1, &bitmap_bh);
    + if (ret < 0)
    + goto out_desc;
    + bitmap_kaddr = kmap(bitmap_bh->b_page);
    + bitmap = nilfs_palloc_block_get_bitmap(
    + inode, bitmap_bh, bitmap_kaddr);
    + pos = nilfs_palloc_find_available_slot(
    + inode, group, group_offset, bitmap,
    + entries_per_group);
    + if (pos >= 0) {
    + /* found a free entry */
    + nilfs_palloc_group_desc_add_entries(
    + inode, group, desc, -1);
    + req->pr_entry_nr =
    + entries_per_group * group + pos;
    + kunmap(desc_bh->b_page);
    + kunmap(bitmap_bh->b_page);
    +
    + req->pr_desc_bh = desc_bh;
    + req->pr_bitmap_bh = bitmap_bh;
    + return 0;
    + }
    + kunmap(bitmap_bh->b_page);
    + brelse(bitmap_bh);
    + }
    +
    + group_offset = 0;
    + }
    +
    + kunmap(desc_bh->b_page);
    + brelse(desc_bh);
    + }
    +
    + /* no entries left */
    + return -ENOSPC;
    +
    + out_desc:
    + kunmap(desc_bh->b_page);
    + brelse(desc_bh);
    + return ret;
    +}
    +
    +void nilfs_palloc_commit_alloc_entry(struct inode *inode,
    + struct nilfs_palloc_req *req)
    +{
    + nilfs_mdt_mark_buffer_dirty(req->pr_bitmap_bh);
    + nilfs_mdt_mark_buffer_dirty(req->pr_desc_bh);
    + nilfs_mdt_mark_dirty(inode);
    +
    + brelse(req->pr_bitmap_bh);
    + brelse(req->pr_desc_bh);
    +}
    +
    +void nilfs_palloc_commit_free_entry(struct inode *inode,
    + struct nilfs_palloc_req *req)
    +{
    + struct nilfs_palloc_group_desc *desc;
    + unsigned long group, group_offset;
    + unsigned char *bitmap;
    + void *desc_kaddr, *bitmap_kaddr;
    +
    + group = nilfs_palloc_group(inode, req->pr_entry_nr, &group_offset);
    + desc_kaddr = kmap(req->pr_desc_bh->b_page);
    + desc = nilfs_palloc_block_get_group_desc(inode, group,
    + req->pr_desc_bh, desc_kaddr);
    + bitmap_kaddr = kmap(req->pr_bitmap_bh->b_page);
    + bitmap = nilfs_palloc_block_get_bitmap(inode, req->pr_bitmap_bh,
    + bitmap_kaddr);
    +
    + if (!nilfs_clear_bit_atomic(nilfs_mdt_bgl_lock(inode, group),
    + group_offset, bitmap))
    + printk(KERN_WARNING "%s: entry number %llu already freed\n",
    + __func__, (unsigned long long)req->pr_entry_nr);
    +
    + nilfs_palloc_group_desc_add_entries(inode, group, desc, 1);
    +
    + kunmap(req->pr_bitmap_bh->b_page);
    + kunmap(req->pr_desc_bh->b_page);
    +
    + nilfs_mdt_mark_buffer_dirty(req->pr_desc_bh);
    + nilfs_mdt_mark_buffer_dirty(req->pr_bitmap_bh);
    + nilfs_mdt_mark_dirty(inode);
    +
    + brelse(req->pr_bitmap_bh);
    + brelse(req->pr_desc_bh);
    +}
    +
    +void nilfs_palloc_abort_alloc_entry(struct inode *inode,
    + struct nilfs_palloc_req *req)
    +{
    + struct nilfs_palloc_group_desc *desc;
    + void *desc_kaddr, *bitmap_kaddr;
    + unsigned char *bitmap;
    + unsigned long group, group_offset;
    +
    + group = nilfs_palloc_group(inode, req->pr_entry_nr, &group_offset);
    + desc_kaddr = kmap(req->pr_desc_bh->b_page);
    + desc = nilfs_palloc_block_get_group_desc(inode, group,
    + req->pr_desc_bh, desc_kaddr);
    + bitmap_kaddr = kmap(req->pr_bitmap_bh->b_page);
    + bitmap = nilfs_palloc_block_get_bitmap(inode, req->pr_bitmap_bh,
    + bitmap_kaddr);
    + if (!nilfs_clear_bit_atomic(nilfs_mdt_bgl_lock(inode, group),
    + group_offset, bitmap))
    + printk(KERN_WARNING "%s: entry numer %llu already freed\n",
    + __func__, (unsigned long long)req->pr_entry_nr);
    +
    + nilfs_palloc_group_desc_add_entries(inode, group, desc, 1);
    +
    + kunmap(req->pr_bitmap_bh->b_page);
    + kunmap(req->pr_desc_bh->b_page);
    +
    + brelse(req->pr_bitmap_bh);
    + brelse(req->pr_desc_bh);
    +
    + req->pr_entry_nr = 0;
    + req->pr_bitmap_bh = NULL;
    + req->pr_desc_bh = NULL;
    +}
    +
    +int nilfs_palloc_prepare_free_entry(struct inode *inode,
    + struct nilfs_palloc_req *req)
    +{
    + struct buffer_head *desc_bh, *bitmap_bh;
    + unsigned long group, group_offset;
    + int ret;
    +
    + group = nilfs_palloc_group(inode, req->pr_entry_nr, &group_offset);
    + ret = nilfs_palloc_get_desc_block(inode, group, 1, &desc_bh);
    + if (ret < 0)
    + return ret;
    + ret = nilfs_palloc_get_bitmap_block(inode, group, 1, &bitmap_bh);
    + if (ret < 0) {
    + brelse(desc_bh);
    + return ret;
    + }
    +
    + req->pr_desc_bh = desc_bh;
    + req->pr_bitmap_bh = bitmap_bh;
    + return 0;
    +}
    +
    +void nilfs_palloc_abort_free_entry(struct inode *inode,
    + struct nilfs_palloc_req *req)
    +{
    + brelse(req->pr_bitmap_bh);
    + brelse(req->pr_desc_bh);
    +
    + req->pr_entry_nr = 0;
    + req->pr_bitmap_bh = NULL;
    + req->pr_desc_bh = NULL;
    +}
    +
    +static int
    +nilfs_palloc_group_is_in(struct inode *inode, unsigned long group, __u64 nr)
    +{
    + __u64 first, last;
    +
    + first = group * nilfs_palloc_entries_per_group(inode);
    + last = first + nilfs_palloc_entries_per_group(inode) - 1;
    + return (nr >= first) && (nr <= last);
    +}
    +
    +int nilfs_palloc_freev(struct inode *inode, __u64 *entry_nrs, size_t nitems)
    +{
    + struct buffer_head *desc_bh, *bitmap_bh;
    + struct nilfs_palloc_group_desc *desc;
    + unsigned char *bitmap;
    + void *desc_kaddr, *bitmap_kaddr;
    + unsigned long group, group_offset;
    + int i, j, n, ret;
    +
    + for (i = 0; i < nitems; i += n) {
    + group = nilfs_palloc_group(inode, entry_nrs[i], &group_offset);
    + ret = nilfs_palloc_get_desc_block(inode, group, 0, &desc_bh);
    + if (ret < 0)
    + return ret;
    + ret = nilfs_palloc_get_bitmap_block(inode, group, 0,
    + &bitmap_bh);
    + if (ret < 0) {
    + brelse(desc_bh);
    + return ret;
    + }
    + desc_kaddr = kmap(desc_bh->b_page);
    + desc = nilfs_palloc_block_get_group_desc(
    + inode, group, desc_bh, desc_kaddr);
    + bitmap_kaddr = kmap(bitmap_bh->b_page);
    + bitmap = nilfs_palloc_block_get_bitmap(
    + inode, bitmap_bh, bitmap_kaddr);
    + for (j = i, n = 0;
    + (j < nitems) && nilfs_palloc_group_is_in(inode, group,
    + entry_nrs[j]);
    + j++, n++) {
    + nilfs_palloc_group(inode, entry_nrs[j], &group_offset);
    + if (!nilfs_clear_bit_atomic(
    + nilfs_mdt_bgl_lock(inode, group),
    + group_offset, bitmap)) {
    + printk(KERN_WARNING
    + "%s: entry number %llu already freed\n",
    + __func__,
    + (unsigned long long)entry_nrs[j]);
    + }
    + }
    + nilfs_palloc_group_desc_add_entries(inode, group, desc, n);
    +
    + kunmap(bitmap_bh->b_page);
    + kunmap(desc_bh->b_page);
    +
    + nilfs_mdt_mark_buffer_dirty(desc_bh);
    + nilfs_mdt_mark_buffer_dirty(bitmap_bh);
    + nilfs_mdt_mark_dirty(inode);
    +
    + brelse(bitmap_bh);
    + brelse(desc_bh);
    + }
    + return 0;
    +}
    diff --git a/fs/nilfs2/alloc.h b/fs/nilfs2/alloc.h
    new file mode 100644
    index 0000000..4ace547
    --- /dev/null
    +++ b/fs/nilfs2/alloc.h
    @@ -0,0 +1,72 @@
    +/*
    + * alloc.h - 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>.
    + */
    +
    +#ifndef _NILFS_ALLOC_H
    +#define _NILFS_ALLOC_H
    +
    +#include <linux/types.h>
    +#include <linux/buffer_head.h>
    +#include <linux/fs.h>
    +
    +static inline unsigned long
    +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_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 *);
    +
    +/**
    + * nilfs_palloc_req - persistent alloctor 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
    + * @pr_entry_bh: buffer head of the buffer containing translation entries
    + */
    +struct nilfs_palloc_req {
    + __u64 pr_entry_nr;
    + struct buffer_head *pr_desc_bh;
    + struct buffer_head *pr_bitmap_bh;
    + struct buffer_head *pr_entry_bh;
    +};
    +
    +int nilfs_palloc_prepare_alloc_entry(struct inode *,
    + struct nilfs_palloc_req *);
    +void nilfs_palloc_commit_alloc_entry(struct inode *,
    + struct nilfs_palloc_req *);
    +void nilfs_palloc_abort_alloc_entry(struct inode *, struct nilfs_palloc_req *);
    +void nilfs_palloc_commit_free_entry(struct inode *, struct nilfs_palloc_req *);
    +int nilfs_palloc_prepare_free_entry(struct inode *, struct nilfs_palloc_req *);
    +void nilfs_palloc_abort_free_entry(struct inode *, struct nilfs_palloc_req *);
    +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 ext2_find_next_zero_bit
    +
    +#endif /* _NILFS_ALLOC_H */
    --
    1.5.6.3


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