From 42f559ed70897a7b74dd3e6293b42e6d2e511eaa Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= Date: Tue, 6 Sep 2016 21:32:47 +0200 Subject: kernel: backport upstream overlayfs fixes MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit First two patches weren't marked for stable but are dependencies for laters ones. The rest of patches was marked for stable but most likely will be backported to 4.5+ only so we need to get them on our own. An important fix is eea2fb4851e9d ("ovl: proper cleanup of workdir") as it allows mounting overlayfs with dirty workdir, e.g. after power cut. Signed-off-by: Rafał Miłecki --- .../051-0007-ovl-fix-workdir-creation.patch | 35 ++++++++++++++++++++++ 1 file changed, 35 insertions(+) create mode 100644 target/linux/generic/patches-4.4/051-0007-ovl-fix-workdir-creation.patch (limited to 'target/linux/generic/patches-4.4/051-0007-ovl-fix-workdir-creation.patch') diff --git a/target/linux/generic/patches-4.4/051-0007-ovl-fix-workdir-creation.patch b/target/linux/generic/patches-4.4/051-0007-ovl-fix-workdir-creation.patch new file mode 100644 index 0000000..1f50170 --- /dev/null +++ b/target/linux/generic/patches-4.4/051-0007-ovl-fix-workdir-creation.patch @@ -0,0 +1,35 @@ +From e1ff3dd1ae52cef5b5373c8cc4ad949c2c25a71c Mon Sep 17 00:00:00 2001 +From: Miklos Szeredi +Date: Mon, 5 Sep 2016 13:55:20 +0200 +Subject: [PATCH] ovl: fix workdir creation + +Workdir creation fails in latest kernel. + +Fix by allowing EOPNOTSUPP as a valid return value from +vfs_removexattr(XATTR_NAME_POSIX_ACL_*). Upper filesystem may not support +ACL and still be perfectly able to support overlayfs. + +Reported-by: Martin Ziegler +Signed-off-by: Miklos Szeredi +Fixes: c11b9fdd6a61 ("ovl: remove posix_acl_default from workdir") +Cc: +--- + fs/overlayfs/super.c | 4 ++-- + 1 file changed, 2 insertions(+), 2 deletions(-) + +--- a/fs/overlayfs/super.c ++++ b/fs/overlayfs/super.c +@@ -794,11 +794,11 @@ retry: + goto out_dput; + + err = vfs_removexattr(work, XATTR_NAME_POSIX_ACL_DEFAULT); +- if (err && err != -ENODATA) ++ if (err && err != -ENODATA && err != -EOPNOTSUPP) + goto out_dput; + + err = vfs_removexattr(work, XATTR_NAME_POSIX_ACL_ACCESS); +- if (err && err != -ENODATA) ++ if (err && err != -ENODATA && err != -EOPNOTSUPP) + goto out_dput; + + /* Clear any inherited mode bits */ -- cgit v1.1