This series allows clean implementation of atomic lookup+(create)+open
operations that previously were done via ->lookup and ->create using open
intents.
The biggest change from the first version is that ->atomic_create has been
merged into ->atomic_open, and that now ->atomic_open is allowed to return with
the result of a lookup without actually opening the file.
The interface is thus simpler and more flexible at the cost of a bit of extra
complexity in the filesystem implementations.
I dropped the rest of the nameidata cleanup patches from this series, and will
post them as a separate series.
Note, I only tested NFS and FUSE, the CIFS, CEPH and 9P changes are completely
untested, so please report any testing results.
git tree is here:
git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs.git atomic-open.v2
Thanks,
Miklos
---
Miklos Szeredi (16):
vfs: split do_lookup()
vfs: reorganize do_last()
vfs: split __dentry_open()
vfs: add i_op->atomic_open()
nfs: don't open in ->d_revalidate
nfs: implement i_op->atomic_open()
nfs: clean up ->create in nfs_rpc_ops
nfs: don't use nd->intent.open.flags
nfs: don't use intents for checking atomic open
fuse: implement i_op->atomic_create()
cifs: implement i_op->atomic_open() and i_op->atomic_create()
ceph: remove unused arg from ceph_lookup_open()
ceph: implement i_op->atomic_open() and i_op->atomic_create()
9p: implement i_op->atomic_create()
vfs: remove open intents from nameidata
vfs: only retry last component if opening stale dentry
---
fs/9p/vfs_inode.c | 169 ++++++++++------
fs/9p/vfs_inode_dotl.c | 52 ++++--
fs/ceph/dir.c | 68 ++++---
fs/ceph/file.c | 22 +-
fs/ceph/super.h | 6 +-
fs/cifs/cifsfs.c | 1 +
fs/cifs/cifsfs.h | 3 +
fs/cifs/dir.c | 435 ++++++++++++++++++++++------------------
fs/fuse/dir.c | 97 +++++++---
fs/internal.h | 10 +-
fs/namei.c | 510 ++++++++++++++++++++++++++++++++++++-----------
fs/nfs/dir.c | 285 ++++++++++-----------------
fs/nfs/file.c | 69 ++++++-
fs/nfs/nfs3proc.c | 2 +-
fs/nfs/nfs4proc.c | 37 +---
fs/nfs/proc.c | 2 +-
fs/open.c | 119 +++++------
include/linux/errno.h | 1 +
include/linux/fs.h | 7 +
include/linux/namei.h | 11 -
include/linux/nfs_xdr.h | 2 +-
21 files changed, 1153 insertions(+), 755 deletions(-)
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