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[PATCH] switch all filesystems over to d_obtain_alias

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Switch all users of d_alloc_anon to d_obtain_alias.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Christoph Hellwig
2008-08-11 15:49:04 +02:00
committed by Al Viro
parent 4ea3ada295
commit 440037287c
19 changed files with 78 additions and 305 deletions
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52
fs/fat/inode.c
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@@ -681,33 +681,24 @@ static struct dentry *fat_fh_to_dentry(struct super_block *sb,
inode = NULL;
}
}
if (!inode) {
/* For now, do nothing
* What we could do is:
* follow the file starting at fh[4], and record
* the ".." entry, and the name of the fh[2] entry.
* The follow the ".." file finding the next step up.
* This way we build a path to the root of
* the tree. If this works, we lookup the path and so
* get this inode into the cache.
* Finally try the fat_iget lookup again
* If that fails, then weare totally out of luck
* But all that is for another day
*/
}
if (!inode)
return ERR_PTR(-ESTALE);
/* now to find a dentry.
* If possible, get a well-connected one
/*
* For now, do nothing if the inode is not found.
*
* What we could do is:
*
* - follow the file starting at fh[4], and record the ".." entry,
* and the name of the fh[2] entry.
* - then follow the ".." file finding the next step up.
*
* This way we build a path to the root of the tree. If this works, we
* lookup the path and so get this inode into the cache. Finally try
* the fat_iget lookup again. If that fails, then we are totally out
* of luck. But all that is for another day
*/
result = d_alloc_anon(inode);
if (result == NULL) {
iput(inode);
return ERR_PTR(-ENOMEM);
}
result->d_op = sb->s_root->d_op;
result = d_obtain_alias(inode);
if (!IS_ERR(result))
result->d_op = sb->s_root->d_op;
return result;
}
@@ -754,15 +745,8 @@ static struct dentry *fat_get_parent(struct dentry *child)
}
inode = fat_build_inode(sb, de, i_pos);
brelse(bh);
if (IS_ERR(inode)) {
parent = ERR_CAST(inode);
goto out;
}
parent = d_alloc_anon(inode);
if (!parent) {
iput(inode);
parent = ERR_PTR(-ENOMEM);
}
parent = d_obtain_alias(inode);
out:
unlock_super(sb);