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f2fs: cleanup the disk level filename updating

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As discuss with Jaegeuk and Chao,
"Once checkpoint is done, f2fs doesn't need to update there-in filename at all."

The disk-level filename is used only one case,
1. create a file A under a dir
2. sync A
3. godown
4. umount
5. mount (roll_forward)

Only the rename/cross_rename changes the filename, if it happens,
a. between step 1 and 2, the sync A will caused checkpoint, so that,
   the roll_forward at step 5 never happens.
b. after step 2, the roll_forward happens, file A will roll forward
   to the result as after step 1.

So that, any updating the disk filename is useless, just cleanup it.

Signed-off-by: Kinglong Mee <kinglongmee@gmail.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Kinglong Mee
2017-03-10 16:28:46 +08:00
committed by Jaegeuk Kim
parent 346fe752c4
commit d03ba4cc3f
5 changed files with 4 additions and 62 deletions
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25
fs/f2fs/dir.c
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@@ -337,24 +337,6 @@ static void init_dent_inode(const struct qstr *name, struct page *ipage)
set_page_dirty(ipage);
}
int update_dent_inode(struct inode *inode, struct inode *to,
const struct qstr *name)
{
struct page *page;
if (file_enc_name(to))
return 0;
page = get_node_page(F2FS_I_SB(inode), inode->i_ino);
if (IS_ERR(page))
return PTR_ERR(page);
init_dent_inode(name, page);
f2fs_put_page(page, 1);
return 0;
}
void do_make_empty_dir(struct inode *inode, struct inode *parent,
struct f2fs_dentry_ptr *d)
{
@@ -438,8 +420,11 @@ struct page *init_inode_metadata(struct inode *inode, struct inode *dir,
set_cold_node(inode, page);
}
if (new_name)
if (new_name) {
init_dent_inode(new_name, page);
if (f2fs_encrypted_inode(dir))
file_set_enc_name(inode);
}
/*
* This file should be checkpointed during fsync.
@@ -599,8 +584,6 @@ add_dentry:
err = PTR_ERR(page);
goto fail;
}
if (f2fs_encrypted_inode(dir))
file_set_enc_name(inode);
}
make_dentry_ptr(NULL, &d, (void *)dentry_blk, 1);