Hi Linus,
Please pull from:
git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs.git overlayfs-linus
This work from Amir introduces the inodes index feature, which provides:
- hardlinks are not broken on copy up;
- infrastructure for overlayfs NFS export.
This also fixes constant st_ino for samefs case for lower hardlinks.
There's one patch touching <linux/fs.h>, which adds an inode flag for testing
"in use by another overlay". So this flag is set on inodes in the underlying
layers, but the use is private to overlayfs.
Thanks,
Miklos
---
Amir Goldstein (19):
ovl: fix nlink leak in ovl_rename()
ovl: allocate an ovl_inode struct
ovl: use ovl_inode mutex to synchronize concurrent copy up
vfs: introduce inode 'inuse' lock
ovl: get exclusive ownership on upper/work dirs
ovl: relax same fs constrain for ovl_check_origin()
ovl: generalize ovl_create_workdir()
ovl: introduce the inodes index dir feature
ovl: verify upper root dir matches lower root dir
ovl: verify index dir matches upper dir
ovl: lookup index entry for copy up origin
ovl: cleanup bad and stale index entries on mount
ovl: defer upper dir lock to tempfile link
ovl: factor out ovl_copy_up_inode() helper
ovl: implement index dir copy up
ovl: persistent overlay inode nlink for indexed inodes
ovl: cleanup orphan index entries
ovl: document copying layers restrictions with inodes index
ovl: mark parent impure and restore timestamp on ovl_link_up()
Miklos Szeredi (14):
ovl: simplify getting inode
ovl: use i_private only as a key
ovl: compare inodes
ovl: move __upperdentry to ovl_inode
ovl: move redirect to ovl_inode
ovl: move impure to ovl_inode
ovl: move cache and version to ovl_inode
ovl: hash overlay non-dir inodes by copy up origin
ovl: extract helper to get temp file in copy up
ovl: base tmpfile in workdir too
ovl: use struct copy_up_ctx as function argument
ovl: add flag for upper in ovl_entry
ovl: rearrange copy up
ovl: move copy up lock out
---
Documentation/filesystems/overlayfs.txt | 34 +++
fs/overlayfs/Kconfig | 20 ++
fs/overlayfs/copy_up.c | 410 +++++++++++++++++++++-----------
fs/overlayfs/dir.c | 52 +++-
fs/overlayfs/inode.c | 215 +++++++++++++++--
fs/overlayfs/namei.c | 368 +++++++++++++++++++++++-----
fs/overlayfs/overlayfs.h | 58 +++--
fs/overlayfs/ovl_entry.h | 36 ++-
fs/overlayfs/readdir.c | 50 ++++
fs/overlayfs/super.c | 247 ++++++++++++++++---
fs/overlayfs/util.c | 345 ++++++++++++++++++++-------
include/linux/fs.h | 4 +
12 files changed, 1456 insertions(+), 383 deletions(-)
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