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| author | Amir Goldstein <amir73il@gmail.com> | 2019-11-16 17:14:41 +0100 |
|---|---|---|
| committer | Miklos Szeredi <mszeredi@redhat.com> | 2020-01-24 09:46:45 +0100 |
| commit | 0f831ec85eda1ae27490baba106aba632c1d8e94 (patch) | |
| tree | f97b25b2abf25f78fb98a3763dee228667fd8665 /fs/overlayfs/util.c | |
| parent | ovl: generalize the lower_layers[] array (diff) | |
| download | linux-0f831ec85eda1ae27490baba106aba632c1d8e94.tar.xz linux-0f831ec85eda1ae27490baba106aba632c1d8e94.zip | |
ovl: simplify ovl_same_sb() helper
No code uses the sb returned from this helper, so make it retrun a boolean
and rename it to ovl_same_fs().
The xino mode is irrelevant when all layers are on same fs, so instead of
describing samefs with mode OVL_XINO_OFF, use a new xino_mode state, which
is 0 in the case of samefs, -1 in the case of xino=off and > 0 with xino
enabled.
Create a new helper ovl_same_dev(), to use instead of the common check for
(ovl_same_fs() || xinobits).
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Diffstat (limited to 'fs/overlayfs/util.c')
| -rw-r--r-- | fs/overlayfs/util.c | 12 |
1 files changed, 0 insertions, 12 deletions
diff --git a/fs/overlayfs/util.c b/fs/overlayfs/util.c index cb4a5eaf0ba5..df503a8c6bcf 100644 --- a/fs/overlayfs/util.c +++ b/fs/overlayfs/util.c @@ -40,18 +40,6 @@ const struct cred *ovl_override_creds(struct super_block *sb) return override_creds(ofs->creator_cred); } -struct super_block *ovl_same_sb(struct super_block *sb) -{ - struct ovl_fs *ofs = sb->s_fs_info; - - if (!ofs->numlowerfs) - return ofs->upper_mnt->mnt_sb; - else if (ofs->numlowerfs == 1 && !ofs->upper_mnt) - return ofs->lower_fs[0].sb; - else - return NULL; -} - /* * Check if underlying fs supports file handles and try to determine encoding * type, in order to deduce maximum inode number used by fs. |