Hi, Here is the V6 of patches. I have taken care of most of the comments from previous iteration and also rebased patches to overlayfs-next branch of miklos's tree. These patches are still in RFC stage and very lightly tested. First I want to make sure that I have addressed all design concerns. Once that is done, will do more extensive testing. Following are changes from V5. - Rebased on top of overlafs-next branch - Fixed races in ovl_getattr() w.r.t metacopy only file. - Fixed issues related to encryped and compressed files in ovl_getattr() - Added bunch of helper functions so that code is little more clean. - Miscellaneous code cleanup as suggested by Amir. Amir, I am still setting UPPERDATA only if file needs it. I am really not convinced that we should do it for all files. Code is not that much extra. Please have another look and see how do you feel about it now. Vivek Vivek Goyal (15): ovl: Create origin xattr on copy up for all files ovl: ovl_check_setxattr() get rid of redundant -EOPNOTSUPP check ovl: Provide a mount option metacopy=on/off for metadata copyup ovl: During copy up, first copy up metadata and then data 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: Fix ovl_getattr() to get number of blocks from lower ovl: Set OVL_UPPERDATA flag during ovl_lookup() ovl: Return lower dentry if only metadata copy up took place ovl: Do not expose metacopy only upper dentry ovl: Fix encryption status of a metacopy only file ovl: Fix compression status of a metacopy only file ovl: Introduce read/write barriers around metacopy flag update ovl: Enable metadata only feature fs/overlayfs/Kconfig | 8 ++++ fs/overlayfs/copy_up.c | 115 +++++++++++++++++++++++++++++------------------ fs/overlayfs/inode.c | 35 +++++++++++++-- fs/overlayfs/namei.c | 40 +++++++++++++++++ fs/overlayfs/overlayfs.h | 9 +++- fs/overlayfs/ovl_entry.h | 1 + fs/overlayfs/super.c | 61 ++++++++++++++++++++++--- fs/overlayfs/util.c | 107 ++++++++++++++++++++++++++++++++++++++----- 8 files changed, 311 insertions(+), 65 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
