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nilfs2: fix block comments
This fixes block comments with proper formatting to eliminate the following checkpatch.pl warnings: "WARNING: Block comments use * on subsequent lines" "WARNING: Block comments use a trailing */ on a separate line" Link: http://lkml.kernel.org/r/1462886671-3521-8-git-send-email-konishi.ryusuke@lab.ntt.co.jp Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Ryusuke Konishi
Linus Torvalds
parent
80d6505232
commit
076a378ba6
@ -68,13 +68,17 @@ int nilfs_palloc_init_blockgroup(struct inode *inode, unsigned int entry_size)
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mi->mi_blocks_per_group =
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DIV_ROUND_UP(nilfs_palloc_entries_per_group(inode),
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mi->mi_entries_per_block) + 1;
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/* Number of blocks in a group including entry blocks and
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a bitmap block */
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/*
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* Number of blocks in a group including entry blocks
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* and a bitmap block
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*/
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mi->mi_blocks_per_desc_block =
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nilfs_palloc_groups_per_desc_block(inode) *
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mi->mi_blocks_per_group + 1;
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/* Number of blocks per descriptor including the
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descriptor block */
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/*
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* Number of blocks per descriptor including the
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* descriptor block
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*/
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return 0;
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}
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@ -122,10 +122,14 @@ struct nilfs_bmap {
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/* pointer type */
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#define NILFS_BMAP_PTR_P 0 /* physical block number (i.e. LBN) */
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#define NILFS_BMAP_PTR_VS 1 /* virtual block number (single
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version) */
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#define NILFS_BMAP_PTR_VM 2 /* virtual block number (has multiple
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versions) */
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#define NILFS_BMAP_PTR_VS 1 /*
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* virtual block number (single
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* version)
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*/
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#define NILFS_BMAP_PTR_VM 2 /*
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* virtual block number (has multiple
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* versions)
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*/
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#define NILFS_BMAP_PTR_U (-1) /* never perform pointer operations */
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#define NILFS_BMAP_USE_VBN(bmap) ((bmap)->b_ptr_type > 0)
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@ -870,8 +870,10 @@ int nilfs_cpfile_is_snapshot(struct inode *cpfile, __u64 cno)
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void *kaddr;
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int ret;
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/* CP number is invalid if it's zero or larger than the
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largest exist one.*/
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/*
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* CP number is invalid if it's zero or larger than the
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* largest existing one.
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*/
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if (cno == 0 || cno >= nilfs_mdt_cno(cpfile))
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return -ENOENT;
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down_read(&NILFS_MDT(cpfile)->mi_sem);
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@ -64,8 +64,10 @@ int nilfs_ifile_create_inode(struct inode *ifile, ino_t *out_ino,
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struct nilfs_palloc_req req;
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int ret;
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req.pr_entry_nr = 0; /* 0 says find free inode from beginning of
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a group. dull code!! */
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req.pr_entry_nr = 0; /*
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* 0 says find free inode from beginning
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* of a group. dull code!!
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*/
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req.pr_entry_bh = NULL;
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ret = nilfs_palloc_prepare_alloc_entry(ifile, &req);
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@ -129,11 +129,14 @@ int nilfs_get_block(struct inode *inode, sector_t blkoff,
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/* Error handling should be detailed */
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set_buffer_new(bh_result);
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set_buffer_delay(bh_result);
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map_bh(bh_result, inode->i_sb, 0); /* dbn must be changed
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to proper value */
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map_bh(bh_result, inode->i_sb, 0);
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/* Disk block number must be changed to proper value */
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} else if (ret == -ENOENT) {
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/* not found is not error (e.g. hole); must return without
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the mapped state flag. */
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/*
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* not found is not error (e.g. hole); must return without
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* the mapped state flag.
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*/
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;
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} else {
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err = ret;
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@ -395,23 +398,26 @@ struct inode *nilfs_new_inode(struct inode *dir, umode_t mode)
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err = nilfs_init_acl(inode, dir);
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if (unlikely(err))
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goto failed_after_creation; /* never occur. When supporting
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nilfs_init_acl(), proper cancellation of
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above jobs should be considered */
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/*
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* Never occur. When supporting nilfs_init_acl(),
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* proper cancellation of above jobs should be considered.
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*/
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goto failed_after_creation;
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return inode;
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failed_after_creation:
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clear_nlink(inode);
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unlock_new_inode(inode);
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iput(inode); /* raw_inode will be deleted through
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nilfs_evict_inode() */
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iput(inode); /*
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* raw_inode will be deleted through
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* nilfs_evict_inode().
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*/
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goto failed;
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failed_ifile_create_inode:
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make_bad_inode(inode);
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iput(inode); /* if i_nlink == 1, generic_forget_inode() will be
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called */
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iput(inode);
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failed:
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return ERR_PTR(err);
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}
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@ -662,8 +668,10 @@ void nilfs_write_inode_common(struct inode *inode,
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else if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode))
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raw_inode->i_device_code =
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cpu_to_le64(huge_encode_dev(inode->i_rdev));
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/* When extending inode, nilfs->ns_inode_size should be checked
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for substitutions of appended fields */
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/*
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* When extending inode, nilfs->ns_inode_size should be checked
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* for substitutions of appended fields.
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*/
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}
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void nilfs_update_inode(struct inode *inode, struct buffer_head *ibh, int flags)
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@ -681,9 +689,12 @@ void nilfs_update_inode(struct inode *inode, struct buffer_head *ibh, int flags)
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set_bit(NILFS_I_INODE_SYNC, &ii->i_state);
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nilfs_write_inode_common(inode, raw_inode, 0);
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/* XXX: call with has_bmap = 0 is a workaround to avoid
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deadlock of bmap. This delays update of i_bmap to just
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before writing */
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/*
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* XXX: call with has_bmap = 0 is a workaround to avoid
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* deadlock of bmap. This delays update of i_bmap to just
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* before writing.
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*/
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nilfs_ifile_unmap_inode(ifile, ino, ibh);
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}
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@ -748,8 +759,10 @@ void nilfs_truncate(struct inode *inode)
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nilfs_mark_inode_dirty(inode);
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nilfs_set_file_dirty(inode, 0);
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nilfs_transaction_commit(sb);
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/* May construct a logical segment and may fail in sync mode.
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But truncate has no return value. */
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/*
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* May construct a logical segment and may fail in sync mode.
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* But truncate has no return value.
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*/
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}
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static void nilfs_clear_inode(struct inode *inode)
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@ -806,8 +819,10 @@ void nilfs_evict_inode(struct inode *inode)
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if (IS_SYNC(inode))
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nilfs_set_transaction_flag(NILFS_TI_SYNC);
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nilfs_transaction_commit(sb);
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/* May construct a logical segment and may fail in sync mode.
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But delete_inode has no return value. */
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/*
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* May construct a logical segment and may fail in sync mode.
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* But delete_inode has no return value.
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*/
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}
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int nilfs_setattr(struct dentry *dentry, struct iattr *iattr)
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@ -915,17 +930,23 @@ int nilfs_set_file_dirty(struct inode *inode, unsigned int nr_dirty)
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spin_lock(&nilfs->ns_inode_lock);
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if (!test_bit(NILFS_I_QUEUED, &ii->i_state) &&
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!test_bit(NILFS_I_BUSY, &ii->i_state)) {
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/* Because this routine may race with nilfs_dispose_list(),
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we have to check NILFS_I_QUEUED here, too. */
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/*
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* Because this routine may race with nilfs_dispose_list(),
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* we have to check NILFS_I_QUEUED here, too.
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*/
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if (list_empty(&ii->i_dirty) && igrab(inode) == NULL) {
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/* This will happen when somebody is freeing
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this inode. */
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/*
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* This will happen when somebody is freeing
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* this inode.
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*/
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nilfs_warning(inode->i_sb, __func__,
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"cannot get inode (ino=%lu)",
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inode->i_ino);
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spin_unlock(&nilfs->ns_inode_lock);
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return -EINVAL; /* NILFS_I_DIRTY may remain for
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freeing inode */
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return -EINVAL; /*
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* NILFS_I_DIRTY may remain for
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* freeing inode.
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*/
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}
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list_move_tail(&ii->i_dirty, &nilfs->ns_dirty_files);
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set_bit(NILFS_I_QUEUED, &ii->i_state);
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@ -64,8 +64,10 @@ struct nilfs_inode_info {
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*/
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struct rw_semaphore xattr_sem;
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#endif
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struct buffer_head *i_bh; /* i_bh contains a new or dirty
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disk inode */
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struct buffer_head *i_bh; /*
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* i_bh contains a new or dirty
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* disk inode.
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*/
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struct nilfs_root *i_root;
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struct inode vfs_inode;
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};
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@ -95,8 +97,10 @@ enum {
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NILFS_I_NEW = 0, /* Inode is newly created */
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NILFS_I_DIRTY, /* The file is dirty */
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NILFS_I_QUEUED, /* inode is in dirty_files list */
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NILFS_I_BUSY, /* inode is grabbed by a segment
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constructor */
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NILFS_I_BUSY, /*
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* Inode is grabbed by a segment
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* constructor
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*/
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NILFS_I_COLLECTED, /* All dirty blocks are collected */
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NILFS_I_UPDATED, /* The file has been written back */
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NILFS_I_INODE_SYNC, /* dsync is not allowed for inode */
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@ -140,8 +144,10 @@ enum {
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struct nilfs_transaction_info {
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u32 ti_magic;
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void *ti_save;
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/* This should never used. If this happens,
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one of other filesystems has a bug. */
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/*
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* This should never be used. If it happens,
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* one of other filesystems has a bug.
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*/
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unsigned short ti_flags;
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unsigned short ti_count;
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};
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@ -151,8 +157,10 @@ struct nilfs_transaction_info {
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/* ti_flags */
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#define NILFS_TI_DYNAMIC_ALLOC 0x0001 /* Allocated from slab */
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#define NILFS_TI_SYNC 0x0002 /* Force to construct segment at the
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end of transaction. */
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#define NILFS_TI_SYNC 0x0002 /*
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* Force to construct segment at the
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* end of transaction.
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*/
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#define NILFS_TI_GC 0x0004 /* GC context */
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#define NILFS_TI_COMMIT 0x0008 /* Change happened or not */
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#define NILFS_TI_WRITER 0x0010 /* Constructor context */
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@ -43,8 +43,10 @@ enum {
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/* work structure for recovery */
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struct nilfs_recovery_block {
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ino_t ino; /* Inode number of the file that this block
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belongs to */
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ino_t ino; /*
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* Inode number of the file that this block
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* belongs to
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*/
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sector_t blocknr; /* block number */
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__u64 vblocknr; /* virtual block number */
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unsigned long blkoff; /* File offset of the data block (per block) */
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@ -869,9 +871,11 @@ int nilfs_search_super_root(struct the_nilfs *nilfs,
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flags = le16_to_cpu(sum->ss_flags);
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if (!(flags & NILFS_SS_SR) && !scan_newer) {
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/* This will never happen because a superblock
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(last_segment) always points to a pseg
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having a super root. */
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/*
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* This will never happen because a superblock
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* (last_segment) always points to a pseg with
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* a super root.
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*/
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ret = NILFS_SEG_FAIL_CONSISTENCY;
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goto failed;
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}
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@ -45,18 +45,26 @@
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*/
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#define SC_N_INODEVEC 16 /* Size of locally allocated inode vector */
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#define SC_MAX_SEGDELTA 64 /* Upper limit of the number of segments
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appended in collection retry loop */
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#define SC_MAX_SEGDELTA 64 /*
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* Upper limit of the number of segments
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* appended in collection retry loop
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*/
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/* Construction mode */
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enum {
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SC_LSEG_SR = 1, /* Make a logical segment having a super root */
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SC_LSEG_DSYNC, /* Flush data blocks of a given file and make
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a logical segment without a super root */
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SC_FLUSH_FILE, /* Flush data files, leads to segment writes without
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creating a checkpoint */
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SC_FLUSH_DAT, /* Flush DAT file. This also creates segments without
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a checkpoint */
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SC_LSEG_DSYNC, /*
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* Flush data blocks of a given file and make
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* a logical segment without a super root.
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*/
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SC_FLUSH_FILE, /*
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* Flush data files, leads to segment writes without
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* creating a checkpoint.
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*/
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SC_FLUSH_DAT, /*
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* Flush DAT file. This also creates segments
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* without a checkpoint.
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*/
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};
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/* Stage numbers of dirty block collection */
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@ -438,8 +446,10 @@ static int nilfs_segctor_feed_segment(struct nilfs_sc_info *sci)
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{
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sci->sc_nblk_this_inc += sci->sc_curseg->sb_sum.nblocks;
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if (NILFS_SEGBUF_IS_LAST(sci->sc_curseg, &sci->sc_segbufs))
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return -E2BIG; /* The current segment is filled up
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(internal code) */
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return -E2BIG; /*
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* The current segment is filled up
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* (internal code)
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*/
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sci->sc_curseg = NILFS_NEXT_SEGBUF(sci->sc_curseg);
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return nilfs_segctor_reset_segment_buffer(sci);
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}
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@ -869,9 +879,11 @@ static int nilfs_segctor_create_checkpoint(struct nilfs_sc_info *sci)
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err = nilfs_cpfile_get_checkpoint(nilfs->ns_cpfile, nilfs->ns_cno, 1,
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&raw_cp, &bh_cp);
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if (likely(!err)) {
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/* The following code is duplicated with cpfile. But, it is
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needed to collect the checkpoint even if it was not newly
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created */
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/*
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* The following code is duplicated with cpfile. But, it is
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* needed to collect the checkpoint even if it was not newly
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* created.
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*/
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mark_buffer_dirty(bh_cp);
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nilfs_mdt_mark_dirty(nilfs->ns_cpfile);
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nilfs_cpfile_put_checkpoint(
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@ -1400,8 +1412,10 @@ static void nilfs_free_incomplete_logs(struct list_head *logs,
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if (atomic_read(&segbuf->sb_err)) {
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/* Case 1: The first segment failed */
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if (segbuf->sb_pseg_start != segbuf->sb_fseg_start)
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/* Case 1a: Partial segment appended into an existing
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segment */
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/*
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* Case 1a: Partial segment appended into an existing
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* segment
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*/
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nilfs_terminate_segment(nilfs, segbuf->sb_fseg_start,
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segbuf->sb_fseg_end);
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else /* Case 1b: New full segment */
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@ -1625,8 +1639,10 @@ static int nilfs_segctor_assign(struct nilfs_sc_info *sci, int mode)
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static void nilfs_begin_page_io(struct page *page)
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{
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if (!page || PageWriteback(page))
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/* For split b-tree node pages, this function may be called
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twice. We ignore the 2nd or later calls by this check. */
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/*
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* For split b-tree node pages, this function may be called
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* twice. We ignore the 2nd or later calls by this check.
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*/
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return;
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lock_page(page);
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@ -2679,8 +2695,10 @@ static void nilfs_segctor_write_out(struct nilfs_sc_info *sci)
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{
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int ret, retrycount = NILFS_SC_CLEANUP_RETRY;
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/* The segctord thread was stopped and its timer was removed.
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But some tasks remain. */
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/*
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* The segctord thread was stopped and its timer was removed.
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* But some tasks remain.
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*/
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do {
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struct nilfs_transaction_info ti;
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@ -189,11 +189,15 @@ enum {
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NILFS_SC_DIRTY, /* One or more dirty meta-data blocks exist */
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NILFS_SC_UNCLOSED, /* Logical segment is not closed */
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NILFS_SC_SUPER_ROOT, /* The latest segment has a super root */
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NILFS_SC_PRIOR_FLUSH, /* Requesting immediate flush without making a
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checkpoint */
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NILFS_SC_HAVE_DELTA, /* Next checkpoint will have update of files
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other than DAT, cpfile, sufile, or files
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moved by GC */
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NILFS_SC_PRIOR_FLUSH, /*
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* Requesting immediate flush without making a
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* checkpoint
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*/
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NILFS_SC_HAVE_DELTA, /*
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* Next checkpoint will have update of files
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* other than DAT, cpfile, sufile, or files
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* moved by GC.
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*/
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};
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/* sc_state */
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@ -203,17 +207,23 @@ enum {
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/*
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* Constant parameters
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*/
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#define NILFS_SC_CLEANUP_RETRY 3 /* Retry count of construction when
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destroying segctord */
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#define NILFS_SC_CLEANUP_RETRY 3 /*
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* Retry count of construction when
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* destroying segctord
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*/
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/*
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* Default values of timeout, in seconds.
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*/
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#define NILFS_SC_DEFAULT_TIMEOUT 5 /* Timeout value of dirty blocks.
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It triggers construction of a
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logical segment with a super root */
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#define NILFS_SC_DEFAULT_SR_FREQ 30 /* Maximum frequency of super root
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creation */
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#define NILFS_SC_DEFAULT_TIMEOUT 5 /*
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* Timeout value of dirty blocks.
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* It triggers construction of a
|
||||
* logical segment with a super root.
|
||||
*/
|
||||
#define NILFS_SC_DEFAULT_SR_FREQ 30 /*
|
||||
* Maximum frequency of super root
|
||||
* creation
|
||||
*/
|
||||
|
||||
/*
|
||||
* The default threshold amount of data, in block counts.
|
||||
|
||||
@ -617,8 +617,10 @@ int init_nilfs(struct the_nilfs *nilfs, struct super_block *sb, char *data)
|
||||
err = nilfs_load_super_block(nilfs, sb, blocksize, &sbp);
|
||||
if (err)
|
||||
goto out;
|
||||
/* not failed_sbh; sbh is released automatically
|
||||
when reloading fails. */
|
||||
/*
|
||||
* Not to failed_sbh; sbh is released automatically
|
||||
* when reloading fails.
|
||||
*/
|
||||
}
|
||||
nilfs->ns_blocksize_bits = sb->s_blocksize_bits;
|
||||
nilfs->ns_blocksize = blocksize;
|
||||
|
||||
@ -127,10 +127,14 @@ struct nilfs_super_root {
|
||||
#define NILFS_MOUNT_ERRORS_RO 0x0020 /* Remount fs ro on errors */
|
||||
#define NILFS_MOUNT_ERRORS_PANIC 0x0040 /* Panic on errors */
|
||||
#define NILFS_MOUNT_BARRIER 0x1000 /* Use block barriers */
|
||||
#define NILFS_MOUNT_STRICT_ORDER 0x2000 /* Apply strict in-order
|
||||
semantics also for data */
|
||||
#define NILFS_MOUNT_NORECOVERY 0x4000 /* Disable write access during
|
||||
mount-time recovery */
|
||||
#define NILFS_MOUNT_STRICT_ORDER 0x2000 /*
|
||||
* Apply strict in-order
|
||||
* semantics also for data
|
||||
*/
|
||||
#define NILFS_MOUNT_NORECOVERY 0x4000 /*
|
||||
* Disable write access during
|
||||
* mount-time recovery
|
||||
*/
|
||||
#define NILFS_MOUNT_DISCARD 0x8000 /* Issue DISCARD requests */
|
||||
|
||||
|
||||
@ -142,16 +146,20 @@ struct nilfs_super_block {
|
||||
__le16 s_minor_rev_level; /* minor revision level */
|
||||
__le16 s_magic; /* Magic signature */
|
||||
|
||||
__le16 s_bytes; /* Bytes count of CRC calculation
|
||||
for this structure. s_reserved
|
||||
is excluded. */
|
||||
__le16 s_bytes; /*
|
||||
* Bytes count of CRC calculation
|
||||
* for this structure. s_reserved
|
||||
* is excluded.
|
||||
*/
|
||||
__le16 s_flags; /* flags */
|
||||
__le32 s_crc_seed; /* Seed value of CRC calculation */
|
||||
/*10*/ __le32 s_sum; /* Check sum of super block */
|
||||
|
||||
__le32 s_log_block_size; /* Block size represented as follows
|
||||
blocksize =
|
||||
1 << (s_log_block_size + 10) */
|
||||
__le32 s_log_block_size; /*
|
||||
* Block size represented as follows
|
||||
* blocksize =
|
||||
* 1 << (s_log_block_size + 10)
|
||||
*/
|
||||
__le64 s_nsegments; /* Number of segments in filesystem */
|
||||
/*20*/ __le64 s_dev_size; /* block device size in bytes */
|
||||
__le64 s_first_data_block; /* 1st seg disk block number */
|
||||
@ -163,8 +171,10 @@ struct nilfs_super_block {
|
||||
__le64 s_last_seq; /* seq. number of seg written last */
|
||||
/*50*/ __le64 s_free_blocks_count; /* Free blocks count */
|
||||
|
||||
__le64 s_ctime; /* Creation time (execution time of
|
||||
newfs) */
|
||||
__le64 s_ctime; /*
|
||||
* Creation time (execution time of
|
||||
* newfs)
|
||||
*/
|
||||
/*60*/ __le64 s_mtime; /* Mount time */
|
||||
__le64 s_wtime; /* Write time */
|
||||
/*70*/ __le16 s_mnt_count; /* Mount count */
|
||||
@ -188,8 +198,10 @@ struct nilfs_super_block {
|
||||
/*A8*/ char s_volume_name[80]; /* volume name */
|
||||
|
||||
/*F8*/ __le32 s_c_interval; /* Commit interval of segment */
|
||||
__le32 s_c_block_max; /* Threshold of data amount for
|
||||
the segment construction */
|
||||
__le32 s_c_block_max; /*
|
||||
* Threshold of data amount for
|
||||
* the segment construction
|
||||
*/
|
||||
/*100*/ __le64 s_feature_compat; /* Compatible feature set */
|
||||
__le64 s_feature_compat_ro; /* Read-only compatible feature set */
|
||||
__le64 s_feature_incompat; /* Incompatible feature set */
|
||||
@ -242,12 +254,18 @@ struct nilfs_super_block {
|
||||
|
||||
#define NILFS_SB_OFFSET_BYTES 1024 /* byte offset of nilfs superblock */
|
||||
|
||||
#define NILFS_SEG_MIN_BLOCKS 16 /* Minimum number of blocks in
|
||||
a full segment */
|
||||
#define NILFS_PSEG_MIN_BLOCKS 2 /* Minimum number of blocks in
|
||||
a partial segment */
|
||||
#define NILFS_MIN_NRSVSEGS 8 /* Minimum number of reserved
|
||||
segments */
|
||||
#define NILFS_SEG_MIN_BLOCKS 16 /*
|
||||
* Minimum number of blocks in
|
||||
* a full segment
|
||||
*/
|
||||
#define NILFS_PSEG_MIN_BLOCKS 2 /*
|
||||
* Minimum number of blocks in
|
||||
* a partial segment
|
||||
*/
|
||||
#define NILFS_MIN_NRSVSEGS 8 /*
|
||||
* Minimum number of reserved
|
||||
* segments
|
||||
*/
|
||||
|
||||
/*
|
||||
* We call DAT, cpfile, and sufile root metadata files. Inodes of
|
||||
@ -513,9 +531,11 @@ struct nilfs_checkpoint {
|
||||
__le64 cp_inodes_count;
|
||||
__le64 cp_blocks_count;
|
||||
|
||||
/* Do not change the byte offset of ifile inode.
|
||||
To keep the compatibility of the disk format,
|
||||
additional fields should be added behind cp_ifile_inode. */
|
||||
/*
|
||||
* Do not change the byte offset of ifile inode.
|
||||
* To keep the compatibility of the disk format,
|
||||
* additional fields should be added behind cp_ifile_inode.
|
||||
*/
|
||||
struct nilfs_inode cp_ifile_inode;
|
||||
};
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user