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knfsd: exportfs: untangle ISDIR logic in find_exported_dentry

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Rework some logic in find_exported_dentry so that we only have a single
S_ISDIR check and logic that makes clear to the reader what we're really doing
here.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Christoph Hellwig 2007-07-17 04:04:31 -07:00 committed by Linus Torvalds
parent 10f11c341d
commit d7dd618a59
1 changed files with 10 additions and 16 deletions
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26
fs/exportfs/expfs.c
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@ -116,30 +116,23 @@ find_exported_dentry(struct super_block *sb, void *obj, void *parent,
if (IS_ERR(result))
return result;
if (S_ISDIR(result->d_inode->i_mode) &&
(result->d_flags & DCACHE_DISCONNECTED)) {
/* it is an unconnected directory, we must connect it */
;
} else {
if (acceptable(context, result))
return result;
if (S_ISDIR(result->d_inode->i_mode)) {
if (S_ISDIR(result->d_inode->i_mode)) {
if (!(result->d_flags & DCACHE_DISCONNECTED)) {
if (acceptable(context, result))
return result;
err = -EACCES;
goto err_result;
}
target_dir = dget(result);
} else {
if (acceptable(context, result))
return result;
alias = find_acceptable_alias(result, acceptable, context);
if (alias)
return alias;
}
/* It's a directory, or we are required to confirm the file's
* location in the tree based on the parent information
*/
dprintk("find_exported_dentry: need to look harder for %s/%d\n",sb->s_id,*(int*)obj);
if (S_ISDIR(result->d_inode->i_mode))
target_dir = dget(result);
else {
if (parent == NULL)
goto err_result;
@ -149,6 +142,7 @@ find_exported_dentry(struct super_block *sb, void *obj, void *parent,
goto err_result;
}
}
/*
* Now we need to make sure that target_dir is properly connected.
* It may already be, as the flag isn't always updated when connection