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Chengguang Xu 338aec3e9d 9p: avoid attaching writeback_fid on mmap with type PRIVATE 
[ Upstream commit c87a37ebd40b889178664c2c09cc187334146292 ]

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 18:18:38 +02:00
..
acl.c
9p: acl: fix uninitialized iattr access
2019-07-03 13:15:58 +02:00
acl.h
…
cache.c
fscache: remove unused ->now_uncached callback
2017-09-06 17:27:26 -07:00
cache.h
fs: 9p: cache.h: Add #define of include guard
2015-11-11 02:19:50 -05:00
fid.c
9p: constify ->d_name handling
2017-01-12 04:01:17 -05:00
fid.h
9p: use clone_fid()
2016-08-03 11:12:12 -04:00
Kconfig
…
Makefile
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
v9fs_vfs.h
9p: use inode->i_lock to protect i_size_write() under 32-bit
2019-03-23 14:35:09 +01:00
v9fs.c
9p locks: add mount option for lock retry interval
2019-04-20 09:15:04 +02:00
v9fs.h
9p locks: add mount option for lock retry interval
2019-04-20 09:15:04 +02:00
vfs_addr.c
9p: pass the correct prototype to read_cache_page
2019-07-31 07:28:55 +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 09:15:04 +02:00
vfs_file.c
9p: avoid attaching writeback_fid on mmap with type PRIVATE
2019-10-11 18:18:38 +02:00
vfs_inode_dotl.c
9p: use inode->i_lock to protect i_size_write() under 32-bit
2019-03-23 14:35:09 +01:00
vfs_inode.c
9p: use inode->i_lock to protect i_size_write() under 32-bit
2019-03-23 14:35:09 +01:00
vfs_super.c
9p: use inode->i_lock to protect i_size_write() under 32-bit
2019-03-23 14:35:09 +01:00
xattr.c
fs/9p/xattr.c: catch the error of p9_client_clunk when setting xattr failed
2018-09-09 19:55:55 +02:00
xattr.h
9p: xattr simplifications
2015-11-13 20:34:33 -05:00