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nilfs2: clean up sketch file

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The sketch file is a file to mark checkpoints with user data.  It was
experimentally introduced in the original implementation, and now
obsolete.  The file was handled differently with regular files; the file
size got truncated when a checkpoint was created.

This stops the special treatment and will treat it as a regular file.
Most users are not affected because mkfs.nilfs2 no longer makes this file.

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
2009-04-06 19:01:56 -07:00
committed by Linus Torvalds
parent e626874685
commit 458c5b0822
5 changed files with 3 additions and 93 deletions
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35
fs/nilfs2/inode.c
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@@ -418,30 +418,6 @@ int nilfs_read_inode_common(struct inode *inode,
return 0;
}
static int nilfs_read_sketch_inode(struct inode *inode)
{
struct nilfs_sb_info *sbi = NILFS_SB(inode->i_sb);
int err = 0;
if (sbi->s_snapshot_cno) {
struct the_nilfs *nilfs = sbi->s_nilfs;
struct buffer_head *bh_cp;
struct nilfs_checkpoint *raw_cp;
err = nilfs_cpfile_get_checkpoint(
nilfs->ns_cpfile, sbi->s_snapshot_cno, 0, &raw_cp,
&bh_cp);
if (likely(!err)) {
if (!nilfs_checkpoint_sketch(raw_cp))
inode->i_size = 0;
nilfs_cpfile_put_checkpoint(
nilfs->ns_cpfile, sbi->s_snapshot_cno, bh_cp);
}
inode->i_flags |= S_NOCMTIME;
}
return err;
}
static int __nilfs_read_inode(struct super_block *sb, unsigned long ino,
struct inode *inode)
{
@@ -469,11 +445,6 @@ static int __nilfs_read_inode(struct super_block *sb, unsigned long ino,
inode->i_op = &nilfs_file_inode_operations;
inode->i_fop = &nilfs_file_operations;
inode->i_mapping->a_ops = &nilfs_aops;
if (unlikely(inode->i_ino == NILFS_SKETCH_INO)) {
err = nilfs_read_sketch_inode(inode);
if (unlikely(err))
goto failed_unmap;
}
} else if (S_ISDIR(inode->i_mode)) {
inode->i_op = &nilfs_dir_inode_operations;
inode->i_fop = &nilfs_dir_operations;
@@ -742,8 +713,7 @@ int nilfs_set_file_dirty(struct nilfs_sb_info *sbi, struct inode *inode,
atomic_add(nr_dirty, &sbi->s_nilfs->ns_ndirtyblks);
if (test_and_set_bit(NILFS_I_DIRTY, &ii->i_state) ||
unlikely(inode->i_ino == NILFS_SKETCH_INO))
if (test_and_set_bit(NILFS_I_DIRTY, &ii->i_state))
return 0;
spin_lock(&sbi->s_inode_lock);
@@ -811,7 +781,6 @@ void nilfs_dirty_inode(struct inode *inode)
return;
}
nilfs_transaction_begin(inode->i_sb, &ti, 0);
if (likely(inode->i_ino != NILFS_SKETCH_INO))
nilfs_mark_inode_dirty(inode);
nilfs_mark_inode_dirty(inode);
nilfs_transaction_commit(inode->i_sb); /* never fails */
}