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| author |   Al Viro <viro@zeniv.linux.org.uk> | 2018-11-04 07:18:51 -0500 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2019-01-30 17:44:25 -0500 |
| commit | a0c9a8b8fd9fd572b0d60276beb2142c8f59f9b8 (patch) | |
| tree | 240a81dae063cbcabc8c8b0d28af7e343dbf20b2 /fs/super.c | |
| parent | new helpers: vfs_create_mount(), fc_mount() (diff) | |
| download | wireguard-linux-a0c9a8b8fd9fd572b0d60276beb2142c8f59f9b8.tar.xz wireguard-linux-a0c9a8b8fd9fd572b0d60276beb2142c8f59f9b8.zip | |
teach vfs_get_tree() to handle subtype, switch do_new_mount() to it
Roll the handling of subtypes into do_new_mount() and vfs_get_tree(). The
former determines any subtype string and hangs it off the fs_context; the
latter applies it.
Make do_new_mount() create, parameterise and commit an fs_context and
create a mount for itself rather than calling vfs_kern_mount().
[AV -- missing kstrdup()]
[AV -- ... and no kstrdup() if we get to setting ->s_submount - we
simply transfer it from fc, leaving NULL behind]
[AV -- constify ->s_submount, while we are at it]
Reviewed-by: David Howells <dhowells@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/super.c')
| -rw-r--r-- | fs/super.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/fs/super.c b/fs/super.c index fc3887277ad1..b91b6df05b67 100644 --- a/fs/super.c +++ b/fs/super.c @@ -1262,6 +1262,11 @@ int vfs_get_tree(struct fs_context *fc) sb = fc->root->d_sb; WARN_ON(!sb->s_bdi); + if (fc->subtype && !sb->s_subtype) { + sb->s_subtype = fc->subtype; + fc->subtype = NULL; + } + /* * Write barrier is for super_cache_count(). We place it before setting * SB_BORN as the data dependency between the two functions is the |