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nfs: make nfs_path() work without vfsmount

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part 3: now we have everything to get nfs_path() just by dentry -
just follow to (disconnected) root and pick the rest of the thing
there.

Start killing propagation of struct vfsmount * on the paths that
used to bring it to nfs_path().

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro
2011-03-16 06:26:11 -04:00
parent b1942c5f8c
commit b514f872f8
4 changed files with 74 additions and 62 deletions
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9
fs/nfs/super.c
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@@ -2771,16 +2771,15 @@ static struct vfsmount *nfs_do_root_mount(struct file_system_type *fs_type,
return root_mnt;
}
static void nfs_fix_devname(const struct path *path, struct vfsmount *mnt)
static void nfs_fix_devname(struct dentry *dentry, struct vfsmount *mnt)
{
char *page = (char *) __get_free_page(GFP_KERNEL);
char *devname, *tmp;
char *dummy;
if (page == NULL)
return;
devname = nfs_path(path->mnt->mnt_devname,
path->mnt->mnt_root, path->dentry,
page, PAGE_SIZE);
devname = nfs_path(&dummy, dentry, page, PAGE_SIZE);
if (IS_ERR(devname))
goto out_freepage;
tmp = kstrdup(devname, GFP_KERNEL);
@@ -2894,7 +2893,7 @@ static int nfs_follow_remote_path(struct vfsmount *root_mnt,
mnt_target->mnt_root = dget(nd->path.dentry);
/* Correct the device pathname */
nfs_fix_devname(&nd->path, mnt_target);
nfs_fix_devname(nd->path.dentry, mnt_target);
path_put(&nd->path);
kfree(nd);