The following is a series of patchsets related to Unionfs, and one for
fsstack. This series includes four types of changes:
1. Fold in Hugh Dickins's fsstack_copy_inode_size fix. Since it depends on
code in unionfs, I'm temporarily folding this patch into my tree. I'll
extract it into a separate patch which can be applied cleanly against
2.6.27-rc in the next few days.
2. Assorted fixes to adderess VFS API changes in 2.6.26/2.6.27-rc1:
->symlink, ->permission, nameidata intent flags changed, and
kmem_cache_create prototype changed.
3. Extracted all whiteout related code into a separate file, and cleaned it
up a lot. Now the main unionfs code calls somewhat generic functions
such as "check if there's a whiteout" or "create a whiteout" and the
like. Once Bharata whiteout code makes it in, it would be easy to make
unionfs use filesystem-native whiteout support.
4. Reworked much of the lookup code in unionfs to ensure that we have a
vfsmount at every lookup stage, esp. when crossing directories. In
particular, started using vfs_path_lookup instead of lookup_one_len.
These changes are a first but important step towards getting rid of all
vfs_* calls within unionfs in preparation for having Miklos's path_*
calls.
There were also a few smaller bug fixes: memleak (also from Hugh Dickins),
some cache coherency fixes, and a fix to an LTP/rename13 regression.
These patches were tested (where appropriate) on v2.6.27-rc1, MM, as well as
the backports to 2.6.{26,25,24,23,22,21,20,19,18,9} on ext2/3/4, xfs,
reiserfs, nfs2/3/4, jffs2, ramfs, tmpfs, cramfs, and squashfs (where
available). Also tested with LTP-full-20080630 and with a continuous
parallel kernel compile (while forcing cache flushing, manipulating lower
branches, etc.). See http://unionfs.filesystems.org/ to download
back-ported unionfs code.
Please pull from the 'master' branch of
git://git.kernel.org/pub/scm/linux/kernel/git/ezk/unionfs.git
to receive the following:
Erez Zadok (18):
Unionfs: simplify the macros used to get/set the dentry start/end branches
Unionfs: move a rename helper closer to rename code
Unionfs: create and consolidate helpers to iput lower objects
Unionfs: create and consolidate helpers to path-put lower objects
Unionfs: simplify stale-inode detection code
Unionfs: overhaul whiteout code
Unionfs: lookup overhaul using vfs_path_lookup
Unionfs: free lower paths array when destroying dentry's private data
Unionfs: cache coherency fixes
Unionfs: remove old lookup code
Unionfs: update maintainers
Unionfs: update copyrights
Unionfs: minor checkpatch fixes
Unionfs: properly hash newly created inodes
Unionfs: symlink no longer takes a mode parameter
Unionfs: permission no longer takes a nameidata parameter
Unionfs: LOOKUP_ACCESS intent no longer exists
Unionfs: use new kmem_cache_create constructor prototype
Hugh Dickins (1):
LTP's iogen01 doio tests used to hang nicely on 32-bit SMP when /tmp was a
MAINTAINERS | 3
fs/stack.c | 58 ++-
fs/unionfs/Makefile | 2
fs/unionfs/commonfops.c | 32 -
fs/unionfs/copyup.c | 45 +-
fs/unionfs/debug.c | 8
fs/unionfs/dentry.c | 123 +++----
fs/unionfs/dirfops.c | 28 -
fs/unionfs/dirhelper.c | 130 -------
fs/unionfs/fanout.h | 158 ++++++---
fs/unionfs/file.c | 6
fs/unionfs/inode.c | 225 ++-----------
fs/unionfs/lookup.c | 769 ++++++++++++++++++++---------------------------
fs/unionfs/main.c | 40 --
fs/unionfs/mmap.c | 6
fs/unionfs/rdstate.c | 6
fs/unionfs/rename.c | 206 ++++--------
fs/unionfs/sioq.c | 26 -
fs/unionfs/sioq.h | 7
fs/unionfs/subr.c | 209 ------------
fs/unionfs/super.c | 22 -
fs/unionfs/union.h | 58 +--
fs/unionfs/unlink.c | 28 -
fs/unionfs/whiteout.c | 577 +++++++++++++++++++++++++++++++++++
fs/unionfs/xattr.c | 6
include/linux/fs_stack.h | 3
include/linux/union_fs.h | 6
27 files changed, 1384 insertions(+), 1403 deletions(-)
Thanks.
---
Erez Zadok
ezk@xxxxxxxxxxxxx
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