mirror of https://gitee.com/openkylin/linux.git
nilfs2: use root object to get ifile
This rewrites functions using ifile so that they get ifile from nilfs_root object, and will remove sbi->s_ifile. Some functions that don't know the root object are extended to receive it from caller. Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
This commit is contained in:
Ryusuke Konishi
parent
8e656fd518
commit
e912a5b668
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@ -301,7 +301,7 @@ struct inode *nilfs_new_inode(struct inode *dir, int mode)
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ii->i_state = 1 << NILFS_I_NEW;
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ii->i_root = root;
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err = nilfs_ifile_create_inode(sbi->s_ifile, &ino, &ii->i_bh);
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err = nilfs_ifile_create_inode(root->ifile, &ino, &ii->i_bh);
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if (unlikely(err))
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goto failed_ifile_create_inode;
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/* reference count of i_bh inherits from nilfs_mdt_read_block() */
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@ -358,16 +358,6 @@ struct inode *nilfs_new_inode(struct inode *dir, int mode)
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return ERR_PTR(err);
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}
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void nilfs_free_inode(struct inode *inode)
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{
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struct super_block *sb = inode->i_sb;
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struct nilfs_sb_info *sbi = NILFS_SB(sb);
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/* XXX: check error code? Is there any thing I can do? */
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(void) nilfs_ifile_delete_inode(sbi->s_ifile, inode->i_ino);
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atomic_dec(&sbi->s_inodes_count);
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}
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void nilfs_set_inode_flags(struct inode *inode)
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{
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unsigned int flags = NILFS_I(inode)->i_flags;
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@ -431,7 +421,8 @@ int nilfs_read_inode_common(struct inode *inode,
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return 0;
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}
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static int __nilfs_read_inode(struct super_block *sb, unsigned long ino,
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static int __nilfs_read_inode(struct super_block *sb,
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struct nilfs_root *root, unsigned long ino,
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struct inode *inode)
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{
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struct nilfs_sb_info *sbi = NILFS_SB(sb);
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@ -441,11 +432,11 @@ static int __nilfs_read_inode(struct super_block *sb, unsigned long ino,
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int err;
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down_read(&NILFS_MDT(dat)->mi_sem); /* XXX */
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err = nilfs_ifile_get_inode_block(sbi->s_ifile, ino, &bh);
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err = nilfs_ifile_get_inode_block(root->ifile, ino, &bh);
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if (unlikely(err))
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goto bad_inode;
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raw_inode = nilfs_ifile_map_inode(sbi->s_ifile, ino, bh);
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raw_inode = nilfs_ifile_map_inode(root->ifile, ino, bh);
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err = nilfs_read_inode_common(inode, raw_inode);
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if (err)
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@ -468,14 +459,14 @@ static int __nilfs_read_inode(struct super_block *sb, unsigned long ino,
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inode, inode->i_mode,
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huge_decode_dev(le64_to_cpu(raw_inode->i_device_code)));
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}
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nilfs_ifile_unmap_inode(sbi->s_ifile, ino, bh);
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nilfs_ifile_unmap_inode(root->ifile, ino, bh);
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brelse(bh);
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up_read(&NILFS_MDT(dat)->mi_sem); /* XXX */
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nilfs_set_inode_flags(inode);
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return 0;
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failed_unmap:
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nilfs_ifile_unmap_inode(sbi->s_ifile, ino, bh);
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nilfs_ifile_unmap_inode(root->ifile, ino, bh);
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brelse(bh);
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bad_inode:
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@ -530,7 +521,7 @@ struct inode *nilfs_iget(struct super_block *sb, struct nilfs_root *root,
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if (!(inode->i_state & I_NEW))
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return inode;
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err = __nilfs_read_inode(sb, ino, inode);
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err = __nilfs_read_inode(sb, root, ino, inode);
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if (unlikely(err)) {
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iget_failed(inode);
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return ERR_PTR(err);
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@ -595,21 +586,20 @@ void nilfs_update_inode(struct inode *inode, struct buffer_head *ibh)
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{
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ino_t ino = inode->i_ino;
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struct nilfs_inode_info *ii = NILFS_I(inode);
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struct super_block *sb = inode->i_sb;
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struct nilfs_sb_info *sbi = NILFS_SB(sb);
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struct inode *ifile = ii->i_root->ifile;
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struct nilfs_inode *raw_inode;
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raw_inode = nilfs_ifile_map_inode(sbi->s_ifile, ino, ibh);
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raw_inode = nilfs_ifile_map_inode(ifile, ino, ibh);
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if (test_and_clear_bit(NILFS_I_NEW, &ii->i_state))
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memset(raw_inode, 0, NILFS_MDT(sbi->s_ifile)->mi_entry_size);
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memset(raw_inode, 0, NILFS_MDT(ifile)->mi_entry_size);
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set_bit(NILFS_I_INODE_DIRTY, &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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nilfs_ifile_unmap_inode(sbi->s_ifile, ino, ibh);
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nilfs_ifile_unmap_inode(ifile, ino, ibh);
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}
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#define NILFS_MAX_TRUNCATE_BLOCKS 16384 /* 64MB for 4KB block */
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@ -719,12 +709,16 @@ void nilfs_evict_inode(struct inode *inode)
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if (inode->i_data.nrpages)
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truncate_inode_pages(&inode->i_data, 0);
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/* TODO: some of the following operations may fail. */
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nilfs_truncate_bmap(ii, 0);
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nilfs_mark_inode_dirty(inode);
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end_writeback(inode);
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nilfs_ifile_delete_inode(ii->i_root->ifile, inode->i_ino);
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atomic_dec(&NILFS_SB(sb)->s_inodes_count);
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nilfs_clear_inode(inode);
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nilfs_free_inode(inode);
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/* nilfs_free_inode() marks inode buffer dirty */
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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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@ -779,8 +773,8 @@ int nilfs_load_inode_block(struct nilfs_sb_info *sbi, struct inode *inode,
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spin_lock(&sbi->s_inode_lock);
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if (ii->i_bh == NULL) {
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spin_unlock(&sbi->s_inode_lock);
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err = nilfs_ifile_get_inode_block(sbi->s_ifile, inode->i_ino,
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pbh);
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err = nilfs_ifile_get_inode_block(ii->i_root->ifile,
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inode->i_ino, pbh);
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if (unlikely(err))
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return err;
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spin_lock(&sbi->s_inode_lock);
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@ -860,7 +854,7 @@ int nilfs_mark_inode_dirty(struct inode *inode)
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}
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nilfs_update_inode(inode, ibh);
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nilfs_mdt_mark_buffer_dirty(ibh);
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nilfs_mdt_mark_dirty(sbi->s_ifile);
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nilfs_mdt_mark_dirty(NILFS_I(inode)->i_root->ifile);
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brelse(ibh);
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return 0;
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}
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@ -286,7 +286,6 @@ extern int nilfs_commit_super(struct nilfs_sb_info *, int);
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extern int nilfs_cleanup_super(struct nilfs_sb_info *);
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int nilfs_attach_checkpoint(struct nilfs_sb_info *sbi, __u64 cno, int curr_mnt,
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struct nilfs_root **root);
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extern void nilfs_detach_checkpoint(struct nilfs_sb_info *);
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/* gcinode.c */
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int nilfs_gccache_submit_read_data(struct inode *, sector_t, sector_t, __u64,
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@ -773,7 +773,7 @@ int nilfs_salvage_orphan_logs(struct the_nilfs *nilfs,
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goto failed;
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}
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err = nilfs_attach_segment_constructor(sbi);
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err = nilfs_attach_segment_constructor(sbi, root);
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if (unlikely(err))
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goto failed;
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@ -791,7 +791,6 @@ int nilfs_salvage_orphan_logs(struct the_nilfs *nilfs,
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}
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failed:
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nilfs_detach_checkpoint(sbi);
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nilfs_put_root(root);
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return err;
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}
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@ -68,9 +68,6 @@ struct nilfs_sb_info {
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spinlock_t s_inode_lock; /* Lock for the nilfs inode.
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It covers s_dirty_files list */
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/* Metadata files */
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struct inode *s_ifile; /* index file inode */
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/* Inode allocator */
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spinlock_t s_next_gen_lock;
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u32 s_next_generation;
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@ -763,12 +763,12 @@ static void nilfs_dispose_list(struct nilfs_sb_info *sbi,
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}
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}
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static int nilfs_test_metadata_dirty(struct nilfs_sb_info *sbi)
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static int nilfs_test_metadata_dirty(struct the_nilfs *nilfs,
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struct nilfs_root *root)
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{
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struct the_nilfs *nilfs = sbi->s_nilfs;
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int ret = 0;
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if (nilfs_mdt_fetch_dirty(sbi->s_ifile))
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if (nilfs_mdt_fetch_dirty(root->ifile))
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ret++;
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if (nilfs_mdt_fetch_dirty(nilfs->ns_cpfile))
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ret++;
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@ -793,7 +793,7 @@ static int nilfs_segctor_confirm(struct nilfs_sc_info *sci)
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struct nilfs_sb_info *sbi = sci->sc_sbi;
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int ret = 0;
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if (nilfs_test_metadata_dirty(sbi))
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if (nilfs_test_metadata_dirty(sbi->s_nilfs, sci->sc_root))
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set_bit(NILFS_SC_DIRTY, &sci->sc_flags);
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spin_lock(&sbi->s_inode_lock);
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@ -809,7 +809,7 @@ static void nilfs_segctor_clear_metadata_dirty(struct nilfs_sc_info *sci)
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struct nilfs_sb_info *sbi = sci->sc_sbi;
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struct the_nilfs *nilfs = sbi->s_nilfs;
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nilfs_mdt_clear_dirty(sbi->s_ifile);
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nilfs_mdt_clear_dirty(sci->sc_root->ifile);
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nilfs_mdt_clear_dirty(nilfs->ns_cpfile);
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nilfs_mdt_clear_dirty(nilfs->ns_sufile);
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nilfs_mdt_clear_dirty(nilfs_dat_inode(nilfs));
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@ -869,7 +869,8 @@ static int nilfs_segctor_fill_in_checkpoint(struct nilfs_sc_info *sci)
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else
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nilfs_checkpoint_set_minor(raw_cp);
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nilfs_write_inode_common(sbi->s_ifile, &raw_cp->cp_ifile_inode, 1);
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nilfs_write_inode_common(sci->sc_root->ifile,
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&raw_cp->cp_ifile_inode, 1);
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nilfs_cpfile_put_checkpoint(nilfs->ns_cpfile, nilfs->ns_cno, bh_cp);
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return 0;
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@ -894,13 +895,12 @@ static void nilfs_fill_in_file_bmap(struct inode *ifile,
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}
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}
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static void nilfs_segctor_fill_in_file_bmap(struct nilfs_sc_info *sci,
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struct inode *ifile)
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static void nilfs_segctor_fill_in_file_bmap(struct nilfs_sc_info *sci)
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{
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struct nilfs_inode_info *ii;
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list_for_each_entry(ii, &sci->sc_dirty_files, i_dirty) {
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nilfs_fill_in_file_bmap(ifile, ii);
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nilfs_fill_in_file_bmap(sci->sc_root->ifile, ii);
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set_bit(NILFS_I_COLLECTED, &ii->i_state);
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}
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}
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@ -1143,7 +1143,7 @@ static int nilfs_segctor_collect_blocks(struct nilfs_sc_info *sci, int mode)
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sci->sc_stage.flags |= NILFS_CF_IFILE_STARTED;
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/* Fall through */
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case NILFS_ST_IFILE:
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err = nilfs_segctor_scan_file(sci, sbi->s_ifile,
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err = nilfs_segctor_scan_file(sci, sci->sc_root->ifile,
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&nilfs_sc_file_ops);
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if (unlikely(err))
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break;
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@ -1984,6 +1984,7 @@ static int nilfs_segctor_check_in_files(struct nilfs_sc_info *sci,
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struct nilfs_sb_info *sbi)
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{
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struct nilfs_inode_info *ii, *n;
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struct inode *ifile = sci->sc_root->ifile;
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spin_lock(&sbi->s_inode_lock);
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retry:
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@ -1994,14 +1995,14 @@ static int nilfs_segctor_check_in_files(struct nilfs_sc_info *sci,
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spin_unlock(&sbi->s_inode_lock);
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err = nilfs_ifile_get_inode_block(
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sbi->s_ifile, ii->vfs_inode.i_ino, &ibh);
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ifile, ii->vfs_inode.i_ino, &ibh);
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if (unlikely(err)) {
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nilfs_warning(sbi->s_super, __func__,
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"failed to get inode block.\n");
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return err;
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}
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nilfs_mdt_mark_buffer_dirty(ibh);
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nilfs_mdt_mark_dirty(sbi->s_ifile);
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nilfs_mdt_mark_dirty(ifile);
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spin_lock(&sbi->s_inode_lock);
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if (likely(!ii->i_bh))
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ii->i_bh = ibh;
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@ -2058,7 +2059,7 @@ static int nilfs_segctor_do_construct(struct nilfs_sc_info *sci, int mode)
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if (unlikely(err))
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goto out;
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if (nilfs_test_metadata_dirty(sbi))
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if (nilfs_test_metadata_dirty(nilfs, sci->sc_root))
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set_bit(NILFS_SC_DIRTY, &sci->sc_flags);
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if (nilfs_segctor_clean(sci))
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@ -2090,7 +2091,7 @@ static int nilfs_segctor_do_construct(struct nilfs_sc_info *sci, int mode)
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goto failed;
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if (sci->sc_stage.flags & NILFS_CF_IFILE_STARTED)
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nilfs_segctor_fill_in_file_bmap(sci, sbi->s_ifile);
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nilfs_segctor_fill_in_file_bmap(sci);
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if (mode == SC_LSEG_SR &&
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sci->sc_stage.scnt >= NILFS_ST_CPFILE) {
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@ -2684,7 +2685,8 @@ static void nilfs_segctor_kill_thread(struct nilfs_sc_info *sci)
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/*
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* Setup & clean-up functions
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*/
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static struct nilfs_sc_info *nilfs_segctor_new(struct nilfs_sb_info *sbi)
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static struct nilfs_sc_info *nilfs_segctor_new(struct nilfs_sb_info *sbi,
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struct nilfs_root *root)
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{
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struct nilfs_sc_info *sci;
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@ -2695,6 +2697,9 @@ static struct nilfs_sc_info *nilfs_segctor_new(struct nilfs_sb_info *sbi)
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sci->sc_sbi = sbi;
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sci->sc_super = sbi->s_super;
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nilfs_get_root(root);
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sci->sc_root = root;
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init_waitqueue_head(&sci->sc_wait_request);
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init_waitqueue_head(&sci->sc_wait_daemon);
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init_waitqueue_head(&sci->sc_wait_task);
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@ -2769,6 +2774,8 @@ static void nilfs_segctor_destroy(struct nilfs_sc_info *sci)
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WARN_ON(!list_empty(&sci->sc_segbufs));
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WARN_ON(!list_empty(&sci->sc_write_logs));
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nilfs_put_root(sci->sc_root);
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down_write(&sbi->s_nilfs->ns_segctor_sem);
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del_timer_sync(&sci->sc_timer);
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@ -2778,6 +2785,7 @@ static void nilfs_segctor_destroy(struct nilfs_sc_info *sci)
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/**
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* nilfs_attach_segment_constructor - attach a segment constructor
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* @sbi: nilfs_sb_info
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* @root: root object of the current filesystem tree
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*
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* nilfs_attach_segment_constructor() allocates a struct nilfs_sc_info,
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* initializes it, and starts the segment constructor.
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@ -2787,7 +2795,8 @@ static void nilfs_segctor_destroy(struct nilfs_sc_info *sci)
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*
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* %-ENOMEM - Insufficient memory available.
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*/
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int nilfs_attach_segment_constructor(struct nilfs_sb_info *sbi)
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int nilfs_attach_segment_constructor(struct nilfs_sb_info *sbi,
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struct nilfs_root *root)
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{
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struct the_nilfs *nilfs = sbi->s_nilfs;
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int err;
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@ -2801,7 +2810,7 @@ int nilfs_attach_segment_constructor(struct nilfs_sb_info *sbi)
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nilfs_detach_segment_constructor(sbi);
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}
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sbi->s_sc_info = nilfs_segctor_new(sbi);
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sbi->s_sc_info = nilfs_segctor_new(sbi, root);
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if (!sbi->s_sc_info)
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return -ENOMEM;
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@ -29,6 +29,8 @@
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#include <linux/nilfs2_fs.h>
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#include "sb.h"
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struct nilfs_root;
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/**
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* struct nilfs_recovery_info - Recovery information
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* @ri_need_recovery: Recovery status
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@ -87,6 +89,7 @@ struct nilfs_segsum_pointer {
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* struct nilfs_sc_info - Segment constructor information
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* @sc_super: Back pointer to super_block struct
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* @sc_sbi: Back pointer to nilfs_sb_info struct
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* @sc_root: root object of the current filesystem tree
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* @sc_nblk_inc: Block count of current generation
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* @sc_dirty_files: List of files to be written
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* @sc_gc_inodes: List of GC inodes having blocks to be written
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@ -129,6 +132,7 @@ struct nilfs_segsum_pointer {
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struct nilfs_sc_info {
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struct super_block *sc_super;
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struct nilfs_sb_info *sc_sbi;
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struct nilfs_root *sc_root;
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|
||||
unsigned long sc_nblk_inc;
|
||||
|
||||
|
|
@ -231,7 +235,8 @@ extern void nilfs_flush_segment(struct super_block *, ino_t);
|
|||
extern int nilfs_clean_segments(struct super_block *, struct nilfs_argv *,
|
||||
void **);
|
||||
|
||||
extern int nilfs_attach_segment_constructor(struct nilfs_sb_info *);
|
||||
int nilfs_attach_segment_constructor(struct nilfs_sb_info *sbi,
|
||||
struct nilfs_root *root);
|
||||
extern void nilfs_detach_segment_constructor(struct nilfs_sb_info *);
|
||||
|
||||
/* recovery.c */
|
||||
|
|
|
|||
|
|
@ -358,9 +358,9 @@ static void nilfs_put_super(struct super_block *sb)
|
|||
down_write(&nilfs->ns_super_sem);
|
||||
if (nilfs->ns_current == sbi)
|
||||
nilfs->ns_current = NULL;
|
||||
list_del_init(&sbi->s_list);
|
||||
up_write(&nilfs->ns_super_sem);
|
||||
|
||||
nilfs_detach_checkpoint(sbi);
|
||||
put_nilfs(sbi->s_nilfs);
|
||||
sbi->s_super = NULL;
|
||||
sb->s_fs_info = NULL;
|
||||
|
|
@ -405,13 +405,12 @@ int nilfs_attach_checkpoint(struct nilfs_sb_info *sbi, __u64 cno, int curr_mnt,
|
|||
if (!root)
|
||||
return err;
|
||||
|
||||
down_write(&nilfs->ns_super_sem);
|
||||
list_add(&sbi->s_list, &nilfs->ns_supers);
|
||||
up_write(&nilfs->ns_super_sem);
|
||||
if (root->ifile)
|
||||
goto reuse; /* already attached checkpoint */
|
||||
|
||||
sbi->s_ifile = nilfs_ifile_new(sbi, nilfs->ns_inode_size);
|
||||
if (!sbi->s_ifile)
|
||||
goto delist;
|
||||
root->ifile = nilfs_ifile_new(sbi, nilfs->ns_inode_size);
|
||||
if (!root->ifile)
|
||||
goto failed;
|
||||
|
||||
down_read(&nilfs->ns_segctor_sem);
|
||||
err = nilfs_cpfile_get_checkpoint(nilfs->ns_cpfile, cno, 0, &raw_cp,
|
||||
|
|
@ -427,7 +426,7 @@ int nilfs_attach_checkpoint(struct nilfs_sb_info *sbi, __u64 cno, int curr_mnt,
|
|||
}
|
||||
goto failed;
|
||||
}
|
||||
err = nilfs_read_inode_common(sbi->s_ifile, &raw_cp->cp_ifile_inode);
|
||||
err = nilfs_read_inode_common(root->ifile, &raw_cp->cp_ifile_inode);
|
||||
if (unlikely(err))
|
||||
goto failed_bh;
|
||||
atomic_set(&sbi->s_inodes_count, le64_to_cpu(raw_cp->cp_inodes_count));
|
||||
|
|
@ -435,35 +434,18 @@ int nilfs_attach_checkpoint(struct nilfs_sb_info *sbi, __u64 cno, int curr_mnt,
|
|||
|
||||
nilfs_cpfile_put_checkpoint(nilfs->ns_cpfile, cno, bh_cp);
|
||||
|
||||
reuse:
|
||||
*rootp = root;
|
||||
return 0;
|
||||
|
||||
failed_bh:
|
||||
nilfs_cpfile_put_checkpoint(nilfs->ns_cpfile, cno, bh_cp);
|
||||
failed:
|
||||
nilfs_mdt_destroy(sbi->s_ifile);
|
||||
sbi->s_ifile = NULL;
|
||||
|
||||
delist:
|
||||
down_write(&nilfs->ns_super_sem);
|
||||
list_del_init(&sbi->s_list);
|
||||
up_write(&nilfs->ns_super_sem);
|
||||
nilfs_put_root(root);
|
||||
|
||||
return err;
|
||||
}
|
||||
|
||||
void nilfs_detach_checkpoint(struct nilfs_sb_info *sbi)
|
||||
{
|
||||
struct the_nilfs *nilfs = sbi->s_nilfs;
|
||||
|
||||
nilfs_mdt_destroy(sbi->s_ifile);
|
||||
sbi->s_ifile = NULL;
|
||||
down_write(&nilfs->ns_super_sem);
|
||||
list_del_init(&sbi->s_list);
|
||||
up_write(&nilfs->ns_super_sem);
|
||||
}
|
||||
|
||||
static int nilfs_statfs(struct dentry *dentry, struct kstatfs *buf)
|
||||
{
|
||||
struct super_block *sb = dentry->d_sb;
|
||||
|
|
@ -862,7 +844,7 @@ nilfs_fill_super(struct super_block *sb, void *data, int silent,
|
|||
}
|
||||
|
||||
if (!(sb->s_flags & MS_RDONLY)) {
|
||||
err = nilfs_attach_segment_constructor(sbi);
|
||||
err = nilfs_attach_segment_constructor(sbi, fsroot);
|
||||
if (err)
|
||||
goto failed_checkpoint;
|
||||
}
|
||||
|
|
@ -896,6 +878,7 @@ nilfs_fill_super(struct super_block *sb, void *data, int silent,
|
|||
}
|
||||
|
||||
down_write(&nilfs->ns_super_sem);
|
||||
list_add(&sbi->s_list, &nilfs->ns_supers);
|
||||
if (!nilfs_test_opt(sbi, SNAPSHOT))
|
||||
nilfs->ns_current = sbi;
|
||||
up_write(&nilfs->ns_super_sem);
|
||||
|
|
@ -906,7 +889,6 @@ nilfs_fill_super(struct super_block *sb, void *data, int silent,
|
|||
nilfs_detach_segment_constructor(sbi);
|
||||
|
||||
failed_checkpoint:
|
||||
nilfs_detach_checkpoint(sbi);
|
||||
nilfs_put_root(fsroot);
|
||||
|
||||
failed_sbi:
|
||||
|
|
@ -966,6 +948,7 @@ static int nilfs_remount(struct super_block *sb, int *flags, char *data)
|
|||
up_write(&nilfs->ns_sem);
|
||||
} else {
|
||||
__u64 features;
|
||||
struct nilfs_root *root;
|
||||
|
||||
/*
|
||||
* Mounting a RDONLY partition read-write, so reread and
|
||||
|
|
@ -987,7 +970,8 @@ static int nilfs_remount(struct super_block *sb, int *flags, char *data)
|
|||
|
||||
sb->s_flags &= ~MS_RDONLY;
|
||||
|
||||
err = nilfs_attach_segment_constructor(sbi);
|
||||
root = NILFS_I(sb->s_root->d_inode)->i_root;
|
||||
err = nilfs_attach_segment_constructor(sbi, root);
|
||||
if (err)
|
||||
goto restore_opts;
|
||||
|
||||
|
|
|
|||
Loading…
Reference in New Issue