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Commit dcfd9b21 authored by Fabian Frederick's avatar Fabian Frederick Committed by Luis de Bethencourt
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befs: make export work with cold dcache 



based on commit b3b42c0d
("fs/affs: make export work with cold dcache")

This adds get_parent function so that nfs client can still work after
cache drop (Tested on NFS v4 with echo 3 > /proc/sys/vm/drop_caches)

Signed-off-by: default avatarFabian Frederick <fabf@skynet.be>
Signed-off-by: default avatarLuis de Bethencourt <luisbg@osg.samsung.com>
parent a351e9b9

fs/befs/linuxvfs.c

+15 −0
Original line number Diff line number Diff line
@@ -58,6 +58,7 @@ static struct dentry *befs_fh_to_dentry(struct super_block *sb, 
				struct fid *fid, int fh_len, int fh_type);

static struct dentry *befs_fh_to_parent(struct super_block *sb,

				struct fid *fid, int fh_len, int fh_type);

static struct dentry *befs_get_parent(struct dentry *child);



static const struct super_operations befs_sops = {

	.alloc_inode	= befs_alloc_inode,	/* allocate a new inode */
@@ -93,6 +94,7 @@ static const struct address_space_operations befs_symlink_aops = { 
static const struct export_operations befs_export_operations = {

	.fh_to_dentry	= befs_fh_to_dentry,

	.fh_to_parent	= befs_fh_to_parent,

	.get_parent	= befs_get_parent,

};



/*
@@ -667,6 +669,19 @@ static struct dentry *befs_fh_to_parent(struct super_block *sb, 
				    befs_nfs_get_inode);

}



static struct dentry *befs_get_parent(struct dentry *child)

{

	struct inode *parent;

	struct befs_inode_info *befs_ino = BEFS_I(d_inode(child));



	parent = befs_iget(child->d_sb,

			   (unsigned long)befs_ino->i_parent.start);

	if (IS_ERR(parent))

		return ERR_CAST(parent);



	return d_obtain_alias(parent);

}



enum {

	Opt_uid, Opt_gid, Opt_charset, Opt_debug, Opt_err,

};