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ocfs2: Rename cleanups

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ocfs2_rename() does direct manipulation of the dirent it's gotten back from
a directory search. Wrap this manipulation inside of a function so that we
can transparently change directory update behavior in the future. As an
added bonus, this gets rid of an ugly macro.

Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
Reviewed-by: Joel Becker <joel.becker@oracle.com>
This commit is contained in:
Mark Fasheh 2007-09-11 17:21:56 -07:00
parent be94d11704
commit 38760e2432
3 changed files with 48 additions and 32 deletions
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22
fs/ocfs2/dir.c
View File

@ -271,6 +271,28 @@ struct buffer_head *ocfs2_find_entry(const char *name, int namelen,
return ret;
}
int ocfs2_update_entry(struct inode *dir, handle_t *handle,
struct buffer_head *de_bh, struct ocfs2_dir_entry *de,
struct inode *new_entry_inode)
{
int ret;
ret = ocfs2_journal_access(handle, dir, de_bh,
OCFS2_JOURNAL_ACCESS_WRITE);
if (ret) {
mlog_errno(ret);
goto out;
}
de->inode = cpu_to_le64(OCFS2_I(new_entry_inode)->ip_blkno);
ocfs2_set_de_type(de, new_entry_inode->i_mode);
ocfs2_journal_dirty(handle, de_bh);
out:
return ret;
}
/*
* ocfs2_delete_entry deletes a directory entry by merging it with the
* previous entry

3
fs/ocfs2/dir.h
View File

@ -50,6 +50,9 @@ static inline int ocfs2_add_entry(handle_t *handle,
dentry->d_name.name, dentry->d_name.len,
inode, blkno, parent_fe_bh, insert_bh);
}
int ocfs2_update_entry(struct inode *dir, handle_t *handle,
struct buffer_head *de_bh, struct ocfs2_dir_entry *de,
struct inode *new_entry_inode);
int ocfs2_check_dir_for_entry(struct inode *dir,
const char *name,

55
fs/ocfs2/namei.c
View File

@ -933,11 +933,6 @@ static void ocfs2_double_unlock(struct inode *inode1, struct inode *inode2)
ocfs2_meta_unlock(inode2, 1);
}
#define PARENT_INO(buffer) \
((struct ocfs2_dir_entry *) \
((char *)buffer + \
le16_to_cpu(((struct ocfs2_dir_entry *)buffer)->rec_len)))->inode
static int ocfs2_rename(struct inode *old_dir,
struct dentry *old_dentry,
struct inode *new_dir,
@ -959,8 +954,8 @@ static int ocfs2_rename(struct inode *old_dir,
handle_t *handle = NULL;
struct buffer_head *old_dir_bh = NULL;
struct buffer_head *new_dir_bh = NULL;
struct ocfs2_dir_entry *old_de = NULL, *new_de = NULL; // dirent for old_dentry
// and new_dentry
struct ocfs2_dir_entry *old_inode_dot_dot_de = NULL, *old_de = NULL,
*new_de = NULL;
struct buffer_head *new_de_bh = NULL, *old_de_bh = NULL; // bhs for above
struct buffer_head *old_inode_de_bh = NULL; // if old_dentry is a dir,
// this is the 1st dirent bh
@ -1044,19 +1039,26 @@ static int ocfs2_rename(struct inode *old_dir,
}
if (S_ISDIR(old_inode->i_mode)) {
status = -EIO;
old_inode_de_bh = ocfs2_bread(old_inode, 0, &status, 0);
if (!old_inode_de_bh)
goto bail;
u64 old_inode_parent;
status = -EIO;
if (le64_to_cpu(PARENT_INO(old_inode_de_bh->b_data)) !=
OCFS2_I(old_dir)->ip_blkno)
status = ocfs2_find_files_on_disk("..", 2, &old_inode_parent,
old_inode, &old_inode_de_bh,
&old_inode_dot_dot_de);
if (status) {
status = -EIO;
goto bail;
status = -EMLINK;
if (!new_inode && new_dir!=old_dir &&
new_dir->i_nlink >= OCFS2_LINK_MAX)
}
if (old_inode_parent != OCFS2_I(old_dir)->ip_blkno) {
status = -EIO;
goto bail;
}
if (!new_inode && new_dir != old_dir &&
new_dir->i_nlink >= OCFS2_LINK_MAX) {
status = -EMLINK;
goto bail;
}
}
status = -ENOENT;
@ -1206,20 +1208,13 @@ static int ocfs2_rename(struct inode *old_dir,
}
/* change the dirent to point to the correct inode */
status = ocfs2_journal_access(handle, new_dir, new_de_bh,
OCFS2_JOURNAL_ACCESS_WRITE);
status = ocfs2_update_entry(new_dir, handle, new_de_bh,
new_de, old_inode);
if (status < 0) {
mlog_errno(status);
goto bail;
}
new_de->inode = cpu_to_le64(OCFS2_I(old_inode)->ip_blkno);
new_de->file_type = old_de->file_type;
new_dir->i_version++;
status = ocfs2_journal_dirty(handle, new_de_bh);
if (status < 0) {
mlog_errno(status);
goto bail;
}
if (S_ISDIR(new_inode->i_mode))
newfe->i_links_count = 0;
@ -1268,12 +1263,8 @@ static int ocfs2_rename(struct inode *old_dir,
}
old_dir->i_ctime = old_dir->i_mtime = CURRENT_TIME;
if (old_inode_de_bh) {
status = ocfs2_journal_access(handle, old_inode,
old_inode_de_bh,
OCFS2_JOURNAL_ACCESS_WRITE);
PARENT_INO(old_inode_de_bh->b_data) =
cpu_to_le64(OCFS2_I(new_dir)->ip_blkno);
status = ocfs2_journal_dirty(handle, old_inode_de_bh);
status = ocfs2_update_entry(old_inode, handle, old_inode_de_bh,
old_inode_dot_dot_de, new_dir);
old_dir->i_nlink--;
if (new_inode) {
new_inode->i_nlink--;