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Subject[GIT PULL] overlayfs update for 4.18
Hi Al,

I'm sending this pull request to you instead of Linus, because a bigger than
usual chunk involves the VFS.

Please pull from:

git:// for-viro

This update contains the following:

- Deal with vfs_mkdir() not instantiating dentry.

- Stack file operations. This solves the ro/rw file descriptor inconsistency,
weirdness with ioctl, as well as removing a bunch of overlay specific hacks
from the VFS.

- Allow metadata-only copy-up when data is unchanged.

- Various cleanups in VFS and overlayfs.


Amir Goldstein (8):
ovl: update documentation for unionmount-testsuite
ovl: remove WARN_ON() real inode attributes mismatch
ovl: strip debug argument from ovl_do_ helpers
ovl: struct cattr cleanups
ovl: return dentry from ovl_create_real()
ovl: create helper ovl_create_temp()
ovl: make ovl_create_real() cope with vfs_mkdir() safely
ovl: use inode_insert5() to hash a newly created inode

Miklos Szeredi (41):
ovl: clean up copy-up error paths
vfs: factor out inode_insert5()
vfs: dedpue: return loff_t
vfs: dedupe: rationalize args
vfs: dedupe: extract helper for a single dedup
vfs: add path_open()
vfs: optionally don't account file in nr_files
vfs: add f_op->pre_mmap()
vfs: export vfs_ioctl() to modules
vfs: export vfs_dedupe_file_range_one() to modules
ovl: copy up times
ovl: copy up inode flags
Revert "Revert "ovl: get_write_access() in truncate""
ovl: copy up file size as well
ovl: deal with overlay files in ovl_d_real()
ovl: stack file ops
ovl: add helper to return real file
ovl: add ovl_read_iter()
ovl: add ovl_write_iter()
ovl: add ovl_fsync()
ovl: add ovl_mmap()
ovl: add ovl_fallocate()
ovl: add lsattr/chattr support
ovl: add ovl_fiemap()
ovl: add O_DIRECT support
ovl: add reflink/copyfile/dedup support
vfs: don't open real
ovl: copy-up on MAP_SHARED
ovl: obsolete "check_copy_up" module option
ovl: fix documentation of non-standard behavior
vfs: simplify dentry_open()
Revert "ovl: fix may_write_real() for overlayfs directories"
Revert "ovl: don't allow writing ioctl on lower layer"
vfs: fix freeze protection in mnt_want_write_file() for overlayfs
Revert "ovl: fix relatime for directories"
Revert "vfs: update ovl inode before relatime check"
Revert "vfs: add flags to d_real()"
Revert "vfs: do get_write_access() on upper layer of overlayfs"
Partially revert "locks: fix file locking on overlayfs"
Revert "fsnotify: support overlayfs"
vfs: remove open_flags from d_real()

Vivek Goyal (29):
ovl: Pass argument to ovl_get_inode() in a structure
ovl: Initialize ovl_inode->redirect in ovl_get_inode()
ovl: Move the copy up helpers to copy_up.c
ovl: Provide a mount option metacopy=on/off for metadata copyup
ovl: During copy up, first copy up metadata and then data
ovl: Copy up only metadata during copy up where it makes sense
ovl: Add helper ovl_already_copied_up()
ovl: A new xattr OVL_XATTR_METACOPY for file on upper
ovl: Use out_err instead of out_nomem
ovl: Modify ovl_lookup() and friends to lookup metacopy dentry
ovl: Copy up meta inode data from lowest data inode
ovl: Add helper ovl_dentry_lowerdata() to get lower data dentry
ovl: Fix ovl_getattr() to get number of blocks from lower
ovl: Store lower data inode in ovl_inode
ovl: Add helper ovl_inode_realdata()
ovl: Open file with data except for the case of fsync
ovl: Do not expose metacopy only dentry from d_real()
ovl: Move some dir related ovl_lookup_single() code in else block
ovl: Check redirects for metacopy files
ovl: Treat metacopy dentries as type OVL_PATH_MERGE
ovl: Add an inode flag OVL_CONST_INO
ovl: Do not set dentry type ORIGIN for broken hardlinks
ovl: Set redirect on metacopy files upon rename
ovl: Set redirect on upper inode when it is linked
ovl: Check redirect on index as well
ovl: Disbale metacopy for MAP_SHARED mmap()
ovl: Do not do metadata only copy-up for truncate operation
ovl: Do not do metacopy only for ioctl modifying file attr
ovl: Enable metadata only feature

Documentation/filesystems/Locking | 4 +-
Documentation/filesystems/overlayfs.txt | 97 ++++--
Documentation/filesystems/vfs.txt | 19 +-
fs/btrfs/ctree.h | 5 +-
fs/btrfs/ioctl.c | 7 +-
fs/file_table.c | 13 +-
fs/inode.c | 210 +++++--------
fs/internal.h | 17 +-
fs/ioctl.c | 1 +
fs/locks.c | 20 +-
fs/namei.c | 2 +-
fs/namespace.c | 69 +----
fs/ocfs2/file.c | 10 +-
fs/open.c | 74 ++---
fs/overlayfs/Kconfig | 40 +++
fs/overlayfs/Makefile | 4 +-
fs/overlayfs/copy_up.c | 273 +++++++++-------
fs/overlayfs/dir.c | 312 +++++++++++++------
fs/overlayfs/export.c | 11 +-
fs/overlayfs/file.c | 530 ++++++++++++++++++++++++++++++++
fs/overlayfs/inode.c | 203 ++++++++----
fs/overlayfs/namei.c | 205 +++++++-----
fs/overlayfs/overlayfs.h | 119 ++++---
fs/overlayfs/ovl_entry.h | 7 +-
fs/overlayfs/super.c | 134 +++++---
fs/overlayfs/util.c | 252 ++++++++++++++-
fs/read_write.c | 91 +++---
fs/xattr.c | 9 +-
fs/xfs/xfs_file.c | 8 +-
include/linux/dcache.h | 15 +-
include/linux/fs.h | 36 ++-
include/linux/fsnotify.h | 14 +-
include/uapi/linux/fs.h | 1 -
mm/util.c | 5 +
34 files changed, 1981 insertions(+), 836 deletions(-)
create mode 100644 fs/overlayfs/file.c

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