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linux-stable/fs/9p
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Chengguang Xu 16a56a80c7 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>
2019-10-17 13:42:10 -07:00
..
acl.c 9p: acl: fix uninitialized iattr access 2019-07-10 09:55:37 +02:00
acl.h
cache.c fs/9p: use fscache mutex rather than spinlock 2016-01-09 02:57:21 -05:00
cache.h fs: 9p: cache.h: Add #define of include guard 2015-11-11 02:19:50 -05:00
fid.c 9p: use clone_fid() 2016-08-03 11:12:12 -04:00
fid.h 9p: use clone_fid() 2016-08-03 11:12:12 -04:00
Kconfig
Makefile 9p: xattr simplifications 2015-11-13 20:34:33 -05:00
v9fs.c 9p locks: add mount option for lock retry interval 2019-04-20 09:07:51 +02:00
v9fs.h 9p locks: add mount option for lock retry interval 2019-04-20 09:07:51 +02:00
v9fs_vfs.h 9p: use inode->i_lock to protect i_size_write() under 32-bit 2019-03-23 13:19:40 +01:00
vfs_addr.c 9p: pass the correct prototype to read_cache_page 2019-08-04 09:33:42 +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 09:07:51 +02:00
vfs_file.c 9p: avoid attaching writeback_fid on mmap with type PRIVATE 2019-10-17 13:42:10 -07:00
vfs_inode.c 9p: use inode->i_lock to protect i_size_write() under 32-bit 2019-03-23 13:19:40 +01:00
vfs_inode_dotl.c 9p: use inode->i_lock to protect i_size_write() under 32-bit 2019-03-23 13:19:40 +01:00
vfs_super.c 9p: use inode->i_lock to protect i_size_write() under 32-bit 2019-03-23 13:19:40 +01:00
xattr.c fs/9p/xattr.c: catch the error of p9_client_clunk when setting xattr failed 2018-09-09 20:01:20 +02:00
xattr.h 9p: xattr simplifications 2015-11-13 20:34:33 -05:00