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->encode_fh() API change

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pass inode + parent's inode or NULL instead of dentry + bool saying
whether we want the parent or not.

NOTE: that needs ceph fix folded in.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro
2012-04-02 14:34:06 -04:00
parent 6d42e7e9f6
commit b0b0382bb4
16 changed files with 93 additions and 139 deletions
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33
fs/exportfs/expfs.c
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@@ -304,24 +304,23 @@ out:
/**
* export_encode_fh - default export_operations->encode_fh function
* @dentry: the dentry to encode
* @inode: the object to encode
* @fh: where to store the file handle fragment
* @max_len: maximum length to store there
* @connectable: whether to store parent information
* @parent: parent directory inode, if wanted
*
* This default encode_fh function assumes that the 32 inode number
* is suitable for locating an inode, and that the generation number
* can be used to check that it is still valid. It places them in the
* filehandle fragment where export_decode_fh expects to find them.
*/
static int export_encode_fh(struct dentry *dentry, struct fid *fid,
int *max_len, int connectable)
static int export_encode_fh(struct inode *inode, struct fid *fid,
int *max_len, struct inode *parent)
{
struct inode * inode = dentry->d_inode;
int len = *max_len;
int type = FILEID_INO32_GEN;
if (connectable && (len < 4)) {
if (parent && (len < 4)) {
*max_len = 4;
return 255;
} else if (len < 2) {
@@ -332,14 +331,9 @@ static int export_encode_fh(struct dentry *dentry, struct fid *fid,
len = 2;
fid->i32.ino = inode->i_ino;
fid->i32.gen = inode->i_generation;
if (connectable && !S_ISDIR(inode->i_mode)) {
struct inode *parent;
spin_lock(&dentry->d_lock);
parent = dentry->d_parent->d_inode;
if (parent) {
fid->i32.parent_ino = parent->i_ino;
fid->i32.parent_gen = parent->i_generation;
spin_unlock(&dentry->d_lock);
len = 4;
type = FILEID_INO32_GEN_PARENT;
}
@@ -352,11 +346,22 @@ int exportfs_encode_fh(struct dentry *dentry, struct fid *fid, int *max_len,
{
const struct export_operations *nop = dentry->d_sb->s_export_op;
int error;
struct dentry *p = NULL;
struct inode *inode = dentry->d_inode, *parent = NULL;
if (connectable && !S_ISDIR(inode->i_mode)) {
p = dget_parent(dentry);
/*
* note that while p might've ceased to be our parent already,
* it's still pinned by and still positive.
*/
parent = p->d_inode;
}
if (nop->encode_fh)
error = nop->encode_fh(dentry, fid->raw, max_len, connectable);
error = nop->encode_fh(inode, fid->raw, max_len, parent);
else
error = export_encode_fh(dentry, fid, max_len, connectable);
error = export_encode_fh(inode, fid, max_len, parent);
dput(p);
return error;
}