The following is a series of patchsets related to Unionfs. This is the
second set of patchsets resulting from an lkml review of the entire unionfs
code base (many thanks go to all of those who sent their comments). The
most significant changes in this set are bug fixes and an overhaul of the
locking in unionfs (many of these fixes are applicable to stacking in
general).
The first two patches in the series are small generic VFS fsstack patches.
These patches were tested (where appropriate) on Linus's 2.6.24 latest code
(as of v2.6.24-rc6-125-g5356f66), MM, as well as the backports to
2.6.{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. 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 (27):
VFS/fs_stack: drop cast on inode passed to i_size_read
Unionfs: use locking around i_size_write in 32-bit systems
Unionfs: clarify usage.txt read/write behavior
Unionfs: interpose cleanup and fix for spliced dentries
Unionfs: initialize inode times for reused inodes
Unionfs: create new special files only in first branch
Unionfs: create new symlinks only in first branch
Unionfs: release special files on copyup
Unionfs: remove custom read/write methods
Unionfs: prevent deadlock in cache coherency
Unionfs: remove unnecessary conditional inode lock
Unionfs: remove unnecessary lock when deleting whiteouts
Unionfs: remove unnecessary lock in read_inode
Unionfs: remove unnecessary locking in follow-link
Unionfs: remove unnecessary parent lock in create
Unionfs: prevent false lockdep warnings in stacking
Unionfs: implement lockdep classes
Unionfs: minor code rearrangement in rename
Unionfs: handle on lower inodes in lookup
Unionfs: set our superblock a/m/ctime granularity
Unionfs: update inode times after a successful open
Unionfs: minor cleanup in check_empty
Unionfs: initialize namelist variable in rename
Unionfs: cleanup lower inodes after successful unlink
Unionfs: don't check dentry on error
Unionfs: implement d_iput method
Unionfs: don't check parent dentries
Hugh Dickins (3):
VFS/fs_stack: use locking around i_size_write in 32-bit systems
Unionfs: mmap fixes
Unionfs: restructure unionfs_setattr and fix truncation order
Documentation/filesystems/unionfs/concepts.txt | 20
Documentation/filesystems/unionfs/issues.txt | 12
Documentation/filesystems/unionfs/usage.txt | 13
fs/stack.c | 8
fs/unionfs/commonfops.c | 22
fs/unionfs/copyup.c | 16
fs/unionfs/dentry.c | 101 ++--
fs/unionfs/dirfops.c | 4
fs/unionfs/dirhelper.c | 11
fs/unionfs/fanout.h | 14
fs/unionfs/file.c | 53 --
fs/unionfs/inode.c | 579 ++++++++++++-------------
fs/unionfs/lookup.c | 20
fs/unionfs/main.c | 19
fs/unionfs/mmap.c | 33 -
fs/unionfs/rename.c | 114 ++--
fs/unionfs/subr.c | 4
fs/unionfs/super.c | 31 -
fs/unionfs/union.h | 38 +
fs/unionfs/unlink.c | 31 -
fs/unionfs/xattr.c | 16
21 files changed, 608 insertions(+), 551 deletions(-)
---
Erez Zadok
ezk@xxxxxxxxxxxxx
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