Hi, Here are the V13 of metadata only copy up patches. These apply on top of 4.16.0-rc7 kernel + "ovl: Bunch of ovl_lookup() path fixes" patch series. Patches are also available here. https://github.com/rhvgoyal/linux/commits/metacopy-v13 Changes from V12: - Primarily took care of Amir's comments. - Redirects are now placed on regular file also and that opened bunch of races. Fixed those issues. - Posted few ovl_lookup() fixes and rebased these patches on top of the fixes. ("ovl: Bunch of ovl_lookup() path fixes") - Now metacopy file with upper is also marked as OVL_TYPE_MERGED and rename code makes use of that assumption. (Suggested by Amir). - Fixed an issue where OVL_TYPE_ORIGIN was being set even for broken hardlinks with metacopy. - Fixed races w.r.t remove redirect path. - During rename, set relative redirect if nlink=1, otherwise set absolute redirect on metacopy files. Any comments and feedback is welcome. Thanks Vivek Vivek Goyal (28): ovl: Set OVL_INDEX flag in ovl_get_inode() ovl: Initialize ovl_inode->redirect in ovl_get_inode() ovl: Rename local variable locked to new_locked ovl: Provide a mount option metacopy=on/off for metadata copyup ovl: During copy up, first copy up metadata and then data ovl: Move the copy up helpers to copy_up.c ovl: Copy up only metadata during copy up where it makes sense ovl: Add helper ovl_already_copied_up() ovl: A new xattr OVL_XATTR_METACOPY for file on upper ovl: Modify ovl_lookup() and friends to lookup metacopy dentry ovl: Copy up meta inode data from lowest data inode ovl: Fix ovl_getattr() to get number of blocks from lower ovl: Add helper ovl_dentry_lowerdata() to get lower data dentry ovl: Do not expose metacopy only dentry from d_real() ovl: Move some of ovl_nlink_start() functionality in ovl_nlink_prep() ovl: Create locked version of ovl_nlink_start() and ovl_nlink_end() ovl: During rename lock both source and target ovl_inode ovl: Check redirects for metacopy files ovl: Treat metacopy dentries as type OVL_PATH_MERGE ovl: Do not set dentry type ORIGIN for broken hardlinks ovl: Set redirect on metacopy files upon rename ovl: Set redirect on upper inode when it is linked ovl: Remove redirect when data of a metacopy file is copied up ovl: Do not error if REDIRECT XATTR is missing ovl: Use out_err insteada of out_nomem ovl: Re-check redirect xattr during inode initialization ovl: Verify a data dentry has been found for metacopy inode ovl: Enable metadata only feature Documentation/filesystems/overlayfs.txt | 30 +++- fs/overlayfs/Kconfig | 19 +++ fs/overlayfs/copy_up.c | 165 +++++++++++++++---- fs/overlayfs/dir.c | 166 ++++++++++++++++--- fs/overlayfs/export.c | 7 +- fs/overlayfs/inode.c | 140 +++++++++++----- fs/overlayfs/namei.c | 121 ++++++++++---- fs/overlayfs/overlayfs.h | 30 +++- fs/overlayfs/ovl_entry.h | 1 + fs/overlayfs/super.c | 62 ++++++- fs/overlayfs/util.c | 281 +++++++++++++++++++++++++++++--- 11 files changed, 861 insertions(+), 161 deletions(-) -- 2.13.6 -- To unsubscribe from this list: send the line "unsubscribe linux-unionfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
