From: Amir Goldstein <amir73il@gmail.com>
To: Miklos Szeredi <miklos@szeredi.hu>
Cc: linux-unionfs@vger.kernel.org
Subject: [PATCH v3 16/23] ovl: factor out ovl_copy_up_inode() helper
Date: Wed, 14 Jun 2017 10:26:35 +0300 [thread overview]
Message-ID: <1497425202-16270-17-git-send-email-amir73il@gmail.com> (raw)
In-Reply-To: <1497425202-16270-1-git-send-email-amir73il@gmail.com>
Factor out helper for copying lower inode data and metadata to temp
upper inode, that is common to copy up using O_TMPFILE and workdir.
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
---
fs/overlayfs/copy_up.c | 64 +++++++++++++++++++++++++++++---------------------
1 file changed, 37 insertions(+), 27 deletions(-)
diff --git a/fs/overlayfs/copy_up.c b/fs/overlayfs/copy_up.c
index f6570bc127e7..e642a51f3be4 100644
--- a/fs/overlayfs/copy_up.c
+++ b/fs/overlayfs/copy_up.c
@@ -316,6 +316,42 @@ static int ovl_set_origin(struct dentry *dentry, struct dentry *lower,
return err;
}
+static int ovl_copy_up_inode(struct dentry *dentry, struct dentry *temp,
+ struct path *lowerpath, struct kstat *stat)
+{
+ int err;
+
+ if (S_ISREG(stat->mode)) {
+ struct path upperpath;
+
+ ovl_path_upper(dentry, &upperpath);
+ BUG_ON(upperpath.dentry != NULL);
+ upperpath.dentry = temp;
+
+ err = ovl_copy_up_data(lowerpath, &upperpath, stat->size);
+ if (err)
+ return err;
+ }
+
+ err = ovl_copy_xattr(lowerpath->dentry, temp);
+ if (err)
+ return err;
+
+ inode_lock(temp->d_inode);
+ err = ovl_set_attr(temp, stat);
+ inode_unlock(temp->d_inode);
+ if (err)
+ return err;
+
+ /*
+ * Store identifier of lower inode in upper inode xattr to
+ * allow lookup of the copy up origin inode.
+ */
+ err = ovl_set_origin(dentry, lowerpath->dentry, temp);
+
+ return err;
+}
+
static int ovl_copy_up_locked(struct dentry *workdir, struct dentry *upperdir,
struct dentry *dentry, struct path *lowerpath,
struct kstat *stat, const char *link,
@@ -375,33 +411,7 @@ static int ovl_copy_up_locked(struct dentry *workdir, struct dentry *upperdir,
if (err)
goto out2;
- if (S_ISREG(stat->mode)) {
- struct path upperpath;
-
- ovl_path_upper(dentry, &upperpath);
- BUG_ON(upperpath.dentry != NULL);
- upperpath.dentry = temp;
-
- err = ovl_copy_up_data(lowerpath, &upperpath, stat->size);
- if (err)
- goto out_cleanup;
- }
-
- err = ovl_copy_xattr(lowerpath->dentry, temp);
- if (err)
- goto out_cleanup;
-
- inode_lock(temp->d_inode);
- err = ovl_set_attr(temp, stat);
- inode_unlock(temp->d_inode);
- if (err)
- goto out_cleanup;
-
- /*
- * Store identifier of lower inode in upper inode xattr to
- * allow lookup of the copy up origin inode.
- */
- err = ovl_set_origin(dentry, lowerpath->dentry, temp);
+ err = ovl_copy_up_inode(dentry, temp, lowerpath, stat);
if (err)
goto out_cleanup;
--
2.7.4
next prev parent reply other threads:[~2017-06-14 7:26 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-06-14 7:26 [PATCH v3 00/23] Overlayfs inodes index Amir Goldstein
2017-06-14 7:26 ` [PATCH v3 01/23] vfs: introduce inode 'inuse' lock Amir Goldstein
2017-06-14 7:26 ` [PATCH v3 02/23] ovl: get exclusive ownership on upper/work dirs Amir Goldstein
2017-06-14 7:26 ` [PATCH v3 03/23] ovl: relax same fs constrain for ovl_check_origin() Amir Goldstein
2017-06-14 7:26 ` [PATCH v3 04/23] ovl: generalize ovl_create_workdir() Amir Goldstein
2017-06-14 7:26 ` [PATCH v3 05/23] ovl: introduce the inodes index dir feature Amir Goldstein
2017-06-14 7:26 ` [PATCH v3 06/23] ovl: verify upper root dir matches lower root dir Amir Goldstein
2017-06-14 7:26 ` [PATCH v3 07/23] ovl: verify index dir matches upper dir Amir Goldstein
2017-06-14 7:26 ` [PATCH v3 08/23] ovl: store path type in dentry Amir Goldstein
2017-06-14 7:26 ` [PATCH v3 09/23] ovl: cram dentry state booleans into type flags Amir Goldstein
2017-06-14 7:26 ` [PATCH v3 10/23] ovl: lookup index entry for copy up origin Amir Goldstein
2017-06-14 7:26 ` [PATCH v3 11/23] ovl: allocate an ovl_inode struct Amir Goldstein
2017-06-14 7:26 ` [PATCH v3 12/23] ovl: store upper/lower real inode in ovl_inode_info Amir Goldstein
2017-06-14 11:00 ` Amir Goldstein
2017-06-16 11:55 ` Amir Goldstein
2017-06-14 7:26 ` [PATCH v3 13/23] ovl: use ovl_inode_init() for initializing new inode Amir Goldstein
2017-06-14 7:26 ` [PATCH v3 14/23] ovl: hash overlay non-dir inodes by copy up origin inode Amir Goldstein
2017-06-14 7:26 ` [PATCH v3 15/23] ovl: defer upper dir lock to tempfile link Amir Goldstein
2017-06-14 7:26 ` Amir Goldstein [this message]
2017-06-14 7:26 ` [PATCH v3 17/23] ovl: generalize ovl_copy_up_locked() using actors Amir Goldstein
2017-06-14 7:26 ` [PATCH v3 18/23] ovl: generalize ovl_copy_up_one() " Amir Goldstein
2017-06-14 7:26 ` [PATCH v3 19/23] ovl: use ovl_inode mutex to synchronize concurrent copy up Amir Goldstein
2017-06-14 7:26 ` [PATCH v3 20/23] ovl: implement index dir copy up method Amir Goldstein
2017-06-14 7:26 ` [PATCH v3 21/23] ovl: link up indexed lower hardlink on lookup Amir Goldstein
2017-06-19 10:22 ` Amir Goldstein
2017-06-14 7:26 ` [PATCH v3 22/23] ovl: fix nlink leak in ovl_rename() Amir Goldstein
2017-06-14 7:26 ` [PATCH v3 23/23] ovl: adjust overlay inode nlink for indexed inodes Amir Goldstein
2017-06-14 7:30 ` [PATCH v3 00/23] Overlayfs inodes index Miklos Szeredi
2017-06-14 7:48 ` Amir Goldstein
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