diff options
| author | Shiyang Ruan <ruansy.fnst@fujitsu.com> | 2022-06-03 13:37:34 +0800 |
|---|---|---|
| committer | akpm <akpm@linux-foundation.org> | 2022-07-17 17:14:31 -0700 |
| commit | e5d6df73302c8d1e7ab2d3555f0faafd0d4b0027 (patch) | |
| tree | b84fd005e939f785622241d9b9f40b936540e928 /fs/xfs | |
| parent | ff17b8df224b98e282ec39a9949a3672fa3dbe93 (diff) | |
fsdax: replace mmap entry in case of CoW
Replace the existing entry to the newly allocated one in case of CoW.
Also, we mark the entry as PAGECACHE_TAG_TOWRITE so writeback marks this
entry as writeprotected. This helps us snapshots so new write pagefaults
after snapshots trigger a CoW.
Link: https://lkml.kernel.org/r/20220603053738.1218681-11-ruansy.fnst@fujitsu.com
Signed-off-by: Goldwyn Rodrigues <rgoldwyn@suse.com>
Signed-off-by: Shiyang Ruan <ruansy.fnst@fujitsu.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Ritesh Harjani <riteshh@linux.ibm.com>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Dan Williams <dan.j.wiliams@intel.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Dave Chinner <david@fromorbit.com>
Cc: Goldwyn Rodrigues <rgoldwyn@suse.de>
Cc: Jane Chu <jane.chu@oracle.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Miaohe Lin <linmiaohe@huawei.com>
Cc: Naoya Horiguchi <naoya.horiguchi@nec.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'fs/xfs')
0 files changed, 0 insertions, 0 deletions