Hi Linus,
I think I addressed all issues with this series:
- i_mutex on non-directories being moved needed for NFS
- split ext4_rename() into cross-rename/plain-rename functions
- split i_op->rename(), it's certainly easier to maintain pre merge, then we'll
see
- xfstests validation added
- whiteout patch added (but not in this pull)
Please pull from:
git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs.git cross-rename
Thanks,
Miklos
---
This series adds a new syscall, renameat2(), which is the same as renameat() but
with a flags argument.
The purpose of extending rename is to add cross-rename, a symmetric variant of
rename, which exchanges the two files. This allows interesting things, which
were not possible before, for example atomically replacing a directory tree with
a symlink, etc... This also allows overlayfs and friends to operate on
whiteouts atomically.
Andy Lutomirski also suggested a "noreplace" flag, which disables the
overwriting behavior of rename.
These two flags, RENAME_EXCHANGE and RENAME_NOREPLACE are only implemented for
ext4 as an example and for testing.
---
J. Bruce Fields (1):
vfs: lock_two_nondirectories: allow directory args
Miklos Szeredi (11):
vfs: add d_is_dir()
vfs: rename: move d_move() up
vfs: rename: use common code for dir and non-dir
vfs: add renameat2 syscall
vfs: add RENAME_NOREPLACE flag
security: add flags to rename hooks
vfs: add cross-rename
ext4: rename: create ext4_renament structure for local vars
ext4: rename: move EMLINK check up
ext4: rename: split out helper functions
ext4: add cross rename support
---
Documentation/filesystems/Locking | 6 +-
Documentation/filesystems/vfs.txt | 16 +
arch/x86/syscalls/syscall_64.tbl | 1 +
.../lustre/lustre/include/linux/lustre_compat25.h | 4 +-
drivers/staging/lustre/lustre/lvfs/lvfs_linux.c | 2 +-
fs/cachefiles/namei.c | 4 +-
fs/dcache.c | 50 ++-
fs/ecryptfs/inode.c | 2 +-
fs/ext4/namei.c | 480 +++++++++++++++------
fs/inode.c | 25 +-
fs/namei.c | 315 +++++++-------
fs/nfsd/vfs.c | 2 +-
include/linux/dcache.h | 8 +-
include/linux/fs.h | 4 +-
include/linux/security.h | 12 +-
include/uapi/linux/fs.h | 3 +
security/security.c | 22 +-
17 files changed, 643 insertions(+), 313 deletions(-)
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