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ovl: store 'has_upper' and 'opaque' as bit flags

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We need to make some room in struct ovl_entry to store information
about redirected ancestors for NFS export, so cram two booleans as
bit flags.

Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
This commit is contained in:
Amir Goldstein
2018-01-14 19:25:31 +02:00
committed by Miklos Szeredi
parent aa3ff3c152
commit c62520a83b
5 changed files with 41 additions and 20 deletions
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6
fs/overlayfs/super.c
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@@ -1345,15 +1345,15 @@ static int ovl_fill_super(struct super_block *sb, void *data, int silent)
if (!root_dentry)
goto out_free_oe;
root_dentry->d_fsdata = oe;
mntput(upperpath.mnt);
if (upperpath.dentry) {
oe->has_upper = true;
ovl_dentry_set_upper_alias(root_dentry);
if (ovl_is_impuredir(upperpath.dentry))
ovl_set_flag(OVL_IMPURE, d_inode(root_dentry));
}
root_dentry->d_fsdata = oe;
/* Root is always merge -> can have whiteouts */
ovl_set_flag(OVL_WHITEOUTS, d_inode(root_dentry));
ovl_inode_init(d_inode(root_dentry), upperpath.dentry,