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>
diff --git a/fs/nilfs2/inode.c b/fs/nilfs2/inode.c
index 7306fc7..7e883d5 100644
--- a/fs/nilfs2/inode.c
+++ b/fs/nilfs2/inode.c
@@ -301,7 +301,7 @@
ii->i_state = 1 << NILFS_I_NEW;
ii->i_root = root;
- err = nilfs_ifile_create_inode(sbi->s_ifile, &ino, &ii->i_bh);
+ err = nilfs_ifile_create_inode(root->ifile, &ino, &ii->i_bh);
if (unlikely(err))
goto failed_ifile_create_inode;
/* reference count of i_bh inherits from nilfs_mdt_read_block() */
@@ -358,16 +358,6 @@
return ERR_PTR(err);
}
-void nilfs_free_inode(struct inode *inode)
-{
- struct super_block *sb = inode->i_sb;
- struct nilfs_sb_info *sbi = NILFS_SB(sb);
-
- /* XXX: check error code? Is there any thing I can do? */
- (void) nilfs_ifile_delete_inode(sbi->s_ifile, inode->i_ino);
- atomic_dec(&sbi->s_inodes_count);
-}
-
void nilfs_set_inode_flags(struct inode *inode)
{
unsigned int flags = NILFS_I(inode)->i_flags;
@@ -431,7 +421,8 @@
return 0;
}
-static int __nilfs_read_inode(struct super_block *sb, unsigned long ino,
+static int __nilfs_read_inode(struct super_block *sb,
+ struct nilfs_root *root, unsigned long ino,
struct inode *inode)
{
struct nilfs_sb_info *sbi = NILFS_SB(sb);
@@ -441,11 +432,11 @@
int err;
down_read(&NILFS_MDT(dat)->mi_sem); /* XXX */
- err = nilfs_ifile_get_inode_block(sbi->s_ifile, ino, &bh);
+ err = nilfs_ifile_get_inode_block(root->ifile, ino, &bh);
if (unlikely(err))
goto bad_inode;
- raw_inode = nilfs_ifile_map_inode(sbi->s_ifile, ino, bh);
+ raw_inode = nilfs_ifile_map_inode(root->ifile, ino, bh);
err = nilfs_read_inode_common(inode, raw_inode);
if (err)
@@ -468,14 +459,14 @@
inode, inode->i_mode,
huge_decode_dev(le64_to_cpu(raw_inode->i_device_code)));
}
- nilfs_ifile_unmap_inode(sbi->s_ifile, ino, bh);
+ nilfs_ifile_unmap_inode(root->ifile, ino, bh);
brelse(bh);
up_read(&NILFS_MDT(dat)->mi_sem); /* XXX */
nilfs_set_inode_flags(inode);
return 0;
failed_unmap:
- nilfs_ifile_unmap_inode(sbi->s_ifile, ino, bh);
+ nilfs_ifile_unmap_inode(root->ifile, ino, bh);
brelse(bh);
bad_inode:
@@ -530,7 +521,7 @@
if (!(inode->i_state & I_NEW))
return inode;
- err = __nilfs_read_inode(sb, ino, inode);
+ err = __nilfs_read_inode(sb, root, ino, inode);
if (unlikely(err)) {
iget_failed(inode);
return ERR_PTR(err);
@@ -595,21 +586,20 @@
{
ino_t ino = inode->i_ino;
struct nilfs_inode_info *ii = NILFS_I(inode);
- struct super_block *sb = inode->i_sb;
- struct nilfs_sb_info *sbi = NILFS_SB(sb);
+ struct inode *ifile = ii->i_root->ifile;
struct nilfs_inode *raw_inode;
- raw_inode = nilfs_ifile_map_inode(sbi->s_ifile, ino, ibh);
+ raw_inode = nilfs_ifile_map_inode(ifile, ino, ibh);
if (test_and_clear_bit(NILFS_I_NEW, &ii->i_state))
- memset(raw_inode, 0, NILFS_MDT(sbi->s_ifile)->mi_entry_size);
+ memset(raw_inode, 0, NILFS_MDT(ifile)->mi_entry_size);
set_bit(NILFS_I_INODE_DIRTY, &ii->i_state);
nilfs_write_inode_common(inode, raw_inode, 0);
/* XXX: call with has_bmap = 0 is a workaround to avoid
deadlock of bmap. This delays update of i_bmap to just
before writing */
- nilfs_ifile_unmap_inode(sbi->s_ifile, ino, ibh);
+ nilfs_ifile_unmap_inode(ifile, ino, ibh);
}
#define NILFS_MAX_TRUNCATE_BLOCKS 16384 /* 64MB for 4KB block */
@@ -719,12 +709,16 @@
if (inode->i_data.nrpages)
truncate_inode_pages(&inode->i_data, 0);
+ /* TODO: some of the following operations may fail. */
nilfs_truncate_bmap(ii, 0);
nilfs_mark_inode_dirty(inode);
end_writeback(inode);
+
+ nilfs_ifile_delete_inode(ii->i_root->ifile, inode->i_ino);
+ atomic_dec(&NILFS_SB(sb)->s_inodes_count);
+
nilfs_clear_inode(inode);
- nilfs_free_inode(inode);
- /* nilfs_free_inode() marks inode buffer dirty */
+
if (IS_SYNC(inode))
nilfs_set_transaction_flag(NILFS_TI_SYNC);
nilfs_transaction_commit(sb);
@@ -779,8 +773,8 @@
spin_lock(&sbi->s_inode_lock);
if (ii->i_bh == NULL) {
spin_unlock(&sbi->s_inode_lock);
- err = nilfs_ifile_get_inode_block(sbi->s_ifile, inode->i_ino,
- pbh);
+ err = nilfs_ifile_get_inode_block(ii->i_root->ifile,
+ inode->i_ino, pbh);
if (unlikely(err))
return err;
spin_lock(&sbi->s_inode_lock);
@@ -860,7 +854,7 @@
}
nilfs_update_inode(inode, ibh);
nilfs_mdt_mark_buffer_dirty(ibh);
- nilfs_mdt_mark_dirty(sbi->s_ifile);
+ nilfs_mdt_mark_dirty(NILFS_I(inode)->i_root->ifile);
brelse(ibh);
return 0;
}