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authorRyusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>2010-09-05 13:35:53 +0900
committerRyusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>2010-10-23 09:24:39 +0900
commit2879ed66e4c6da1dfc6bb0bd04566b61824f9256 (patch)
treef6d5b47abac374fb9ecd516eaea424d990821d83 /fs/nilfs2/mdt.c
parent090fd5b10165033d7c30afde0a7e59141d820602 (diff)
downloadlinux-2879ed66e4c6da1dfc6bb0bd04566b61824f9256.tar.gz
nilfs2: remove own inode allocator and destructor for metadata files
This finally removes own inode allocator and destructor functions for metadata files. Several routines, nilfs_mdt_new(), nilfs_mdt_new_common(), nilfs_mdt_clear(), nilfs_mdt_destroy(), and nilfs_alloc_inode_common() will be gone. Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
Diffstat (limited to 'fs/nilfs2/mdt.c')
-rw-r--r--fs/nilfs2/mdt.c111
1 files changed, 0 insertions, 111 deletions
diff --git a/fs/nilfs2/mdt.c b/fs/nilfs2/mdt.c
index 0a2ccfc0d6f..d60fdb097d5 100644
--- a/fs/nilfs2/mdt.c
+++ b/fs/nilfs2/mdt.c
@@ -36,7 +36,6 @@
#define NILFS_MDT_MAX_RA_BLOCKS (16 - 1)
-#define INIT_UNUSED_INODE_FIELDS
static int
nilfs_mdt_insert_new_block(struct inode *inode, unsigned long block,
@@ -435,93 +434,6 @@ int nilfs_mdt_init(struct inode *inode, gfp_t gfp_mask, size_t objsz)
return 0;
}
-/*
- * NILFS2 uses pseudo inodes for meta data files such as DAT, cpfile, sufile,
- * ifile, or gcinodes. This allows the B-tree code and segment constructor
- * to treat them like regular files, and this helps to simplify the
- * implementation.
- * On the other hand, some of the pseudo inodes have an irregular point:
- * They don't have valid inode->i_sb pointer because their lifetimes are
- * longer than those of the super block structs; they may continue for
- * several consecutive mounts/umounts. This would need discussions.
- */
-/**
- * nilfs_mdt_new_common - allocate a pseudo inode for metadata file
- * @nilfs: nilfs object
- * @sb: super block instance the metadata file belongs to
- * @ino: inode number
- */
-struct inode *
-nilfs_mdt_new_common(struct the_nilfs *nilfs, struct super_block *sb,
- ino_t ino)
-{
- struct inode *inode = nilfs_alloc_inode_common(nilfs);
-
- if (!inode)
- return NULL;
- else {
- struct address_space * const mapping = &inode->i_data;
-
- inode->i_sb = sb; /* sb may be NULL for some meta data files */
- inode->i_blkbits = nilfs->ns_blocksize_bits;
- inode->i_flags = 0;
- atomic_set(&inode->i_count, 1);
- inode->i_nlink = 1;
- inode->i_ino = ino;
-
-#ifdef INIT_UNUSED_INODE_FIELDS
- atomic_set(&inode->i_writecount, 0);
- inode->i_size = 0;
- inode->i_blocks = 0;
- inode->i_bytes = 0;
- inode->i_generation = 0;
-#ifdef CONFIG_QUOTA
- memset(&inode->i_dquot, 0, sizeof(inode->i_dquot));
-#endif
- inode->i_pipe = NULL;
- inode->i_bdev = NULL;
- inode->i_cdev = NULL;
- inode->i_rdev = 0;
-#ifdef CONFIG_SECURITY
- inode->i_security = NULL;
-#endif
- inode->dirtied_when = 0;
-
- INIT_LIST_HEAD(&inode->i_list);
- INIT_LIST_HEAD(&inode->i_sb_list);
- inode->i_state = 0;
-#endif
-
- spin_lock_init(&inode->i_lock);
- mutex_init(&inode->i_mutex);
- init_rwsem(&inode->i_alloc_sem);
-
- mapping->host = NULL; /* instead of inode */
- mapping->flags = 0;
- mapping->assoc_mapping = NULL;
-
- inode->i_mapping = mapping;
- }
-
- return inode;
-}
-
-struct inode *nilfs_mdt_new(struct the_nilfs *nilfs, struct super_block *sb,
- ino_t ino, size_t objsz)
-{
- struct inode *inode;
-
- inode = nilfs_mdt_new_common(nilfs, sb, ino);
- if (!inode)
- return NULL;
-
- if (nilfs_mdt_init(inode, NILFS_MDT_GFP, objsz) < 0) {
- nilfs_destroy_inode(inode);
- return NULL;
- }
- return inode;
-}
-
void nilfs_mdt_set_entry_size(struct inode *inode, unsigned entry_size,
unsigned header_size)
{
@@ -688,26 +600,3 @@ void nilfs_mdt_clear_shadow_map(struct inode *inode)
truncate_inode_pages(&shadow->frozen_btnodes, 0);
up_write(&mi->mi_sem);
}
-
-static void nilfs_mdt_clear(struct inode *inode)
-{
- struct nilfs_inode_info *ii = NILFS_I(inode);
-
- invalidate_mapping_pages(inode->i_mapping, 0, -1);
- truncate_inode_pages(inode->i_mapping, 0);
-
- if (test_bit(NILFS_I_BMAP, &ii->i_state))
- nilfs_bmap_clear(ii->i_bmap);
- nilfs_btnode_cache_clear(&ii->i_btnode_cache);
-}
-
-void nilfs_mdt_destroy(struct inode *inode)
-{
- struct nilfs_mdt_info *mdi = NILFS_MDT(inode);
-
- if (mdi->mi_palloc_cache)
- nilfs_palloc_destroy_cache(inode);
- nilfs_mdt_clear(inode);
-
- nilfs_destroy_inode(inode);
-}