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| author | Miklos Szeredi <mszeredi@redhat.com> | 2016-07-29 12:05:24 +0200 |
|---|---|---|
| committer | Miklos Szeredi <mszeredi@redhat.com> | 2016-07-29 12:05:24 +0200 |
| commit | 39b681f8026c170a73972517269efc830db0d7ce (patch) | |
| tree | 592a1c87e7b3f16d5422577ee9aa9bd6e93f49e9 /fs/overlayfs/copy_up.c | |
| parent | a999d7e161a085e30181d0a88f049bd92112e172 (diff) | |
ovl: store real inode pointer in ->i_private
To get from overlay inode to real inode we currently use 'struct
ovl_entry', which has lifetime connected to overlay dentry. This is okay,
since each overlay dentry had a new overlay inode allocated.
Following patch will break that assumption, so need to leave out ovl_entry.
This patch stores the real inode directly in i_private, with the lowest bit
used to indicate whether the inode is upper or lower.
Lifetime rules remain, using ovl_inode_real() must only be done while
caller holds ref on overlay dentry (and hence on real dentry), or within
RCU protected regions.
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Diffstat (limited to 'fs/overlayfs/copy_up.c')
| -rw-r--r-- | fs/overlayfs/copy_up.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/overlayfs/copy_up.c b/fs/overlayfs/copy_up.c index 80aa6f1eb336..54e5d6681786 100644 --- a/fs/overlayfs/copy_up.c +++ b/fs/overlayfs/copy_up.c @@ -292,6 +292,7 @@ static int ovl_copy_up_locked(struct dentry *workdir, struct dentry *upperdir, goto out_cleanup; ovl_dentry_update(dentry, newdentry); + ovl_inode_update(d_inode(dentry), d_inode(newdentry)); newdentry = NULL; /* |