linux-stable/fs/9p
Chengguang Xu 18dd2b05f3 9p: avoid attaching writeback_fid on mmap with type PRIVATE
[ Upstream commit c87a37ebd4 ]

Currently on mmap cache policy, we always attach writeback_fid
whether mmap type is SHARED or PRIVATE. However, in the use case
of kata-container which combines 9p(Guest OS) with overlayfs(Host OS),
this behavior will trigger overlayfs' copy-up when excute command
inside container.

Link: http://lkml.kernel.org/r/20190820100325.10313-1-cgxu519@zoho.com.cn
Signed-off-by: Chengguang Xu <cgxu519@zoho.com.cn>
Signed-off-by: Dominique Martinet <dominique.martinet@cea.fr>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2019-10-11 18:21:13 +02:00
..
acl.c 9p: acl: fix uninitialized iattr access 2019-07-03 13:14:42 +02:00
acl.h
cache.c 9p/cache.c: Fix memory leak in v9fs_cache_session_get_cookie 2019-10-07 18:57:29 +02:00
cache.h fs: 9p: cache.h: Add #define of include guard 2015-11-11 02:19:50 -05:00
fid.c treewide: kmalloc() -> kmalloc_array() 2018-06-12 16:19:22 -07:00
fid.h 9p: use clone_fid() 2016-08-03 11:12:12 -04:00
Kconfig fs/*/Kconfig: drop links to 404-compliant http://acl.bestbits.at 2018-01-01 12:45:37 -07:00
Makefile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
v9fs.c 9p locks: add mount option for lock retry interval 2019-04-20 09:16:00 +02:00
v9fs.h 9p locks: add mount option for lock retry interval 2019-04-20 09:16:00 +02:00
v9fs_vfs.h 9p: use inode->i_lock to protect i_size_write() under 32-bit 2019-03-23 20:09:38 +01:00
vfs_addr.c 9p: pass the correct prototype to read_cache_page 2019-07-31 07:27:08 +02:00
vfs_dentry.c VFS: normal filesystems (and lustre): d_inode() annotations 2015-04-15 15:06:57 -04:00
vfs_dir.c 9p: do not trust pdu content for stat item size 2019-04-20 09:16:00 +02:00
vfs_file.c 9p: avoid attaching writeback_fid on mmap with type PRIVATE 2019-10-11 18:21:13 +02:00
vfs_inode.c 9p: use inode->i_lock to protect i_size_write() under 32-bit 2019-03-23 20:09:38 +01:00
vfs_inode_dotl.c 9p: use inode->i_lock to protect i_size_write() under 32-bit 2019-03-23 20:09:38 +01:00
vfs_super.c 9p: use inode->i_lock to protect i_size_write() under 32-bit 2019-03-23 20:09:38 +01:00
xattr.c fs/9p/xattr.c: catch the error of p9_client_clunk when setting xattr failed 2018-08-13 09:35:16 +09:00
xattr.h 9p: xattr simplifications 2015-11-13 20:34:33 -05:00