[PATCH 0/7] Prepare for lazy lowerdata lookup

[Amir Goldstein <amir73il@gmail.com>]

Miklos,

This series is a cleanup towards the lazy lowerdata lookup patches that
I mentioned in an earlier email [1].  The lazy lowerdata patches are
ready including tests, but I am waiting for your feedback on the
data-only layers before I post the complete series.

I am posting this cleanup series independently, because it mostly [*]
stands on its own.

Specifically, patch #1 is a bug fix for stable.

Feel free to take just patch #1, or only part of the cleanup or wait for
the posting of the complete work.

Thanks,
Amir.

[*] The last patch, which reserves the space for lowerdata_redirect is
not completely independent of the lazy lowerdata series, but I preferred
to do it this way then to remove the lowerdata inode union field and add
lowerdata_redirect later, because I think the change is easier to review
this way.

[1] https://lore.kernel.org/linux-unionfs/CAOQ4uxich227fP7bGSCNqx-JX5h36O-MLwqPoy0r33tuH=z2cA@mail.gmail.com/

Amir Goldstein (7):
  ovl: update of dentry revalidate flags after copy up
  ovl: use OVL_E() and OVL_E_FLAGS() accessors
  ovl: use ovl_numlower() and ovl_lowerstack() accessors
  ovl: factor out ovl_free_entry() and ovl_stack_*() helpers
  ovl: move ovl_entry into ovl_inode
  ovl: deduplicate lowerpath and lowerstack[0]
  ovl: replace lowerdata inode reference with lowerdata redirect

 fs/overlayfs/copy_up.c   |   2 +
 fs/overlayfs/dir.c       |   5 +-
 fs/overlayfs/export.c    |  37 ++++-----
 fs/overlayfs/inode.c     |  20 ++---
 fs/overlayfs/namei.c     |  75 +++++++++---------
 fs/overlayfs/overlayfs.h |  24 ++++--
 fs/overlayfs/ovl_entry.h |  63 +++++++++++----
 fs/overlayfs/super.c     |  86 +++++++-------------
 fs/overlayfs/util.c      | 164 +++++++++++++++++++++++++++++----------
 9 files changed, 281 insertions(+), 195 deletions(-)

-- 
2.34.1