Commit cd49bc20 authored Jun 07, 2024 by Long Li

Revert "iomap: Don't create iomap_page objects in iomap_page_mkwrite_actor"

hulk inclusion
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I9UNQS


CVE: NA

------------------------------------------

To properly set the dirty state of sub-pages during mmap write operations,
it is necessary to ensure that the iop is created beforehand. This prevents
issues where the iop might not yet be created when attempting to set the
sub-page's dirty state.

This reverts commit 9df33786.

Fixes: 99e9a55b ("iomap: add support to track dirty state of sub pages")
Signed-off-by: Long Li <leo.lilong@huawei.com>

parent b1800a08

fs/iomap/buffered-io.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -1073,6 +1073,7 @@ iomap_page_mkwrite_actor(struct inode *inode, loff_t pos, loff_t length,
		block_commit_write(page, 0, length);
		} else {
		WARN_ON_ONCE(!PageUptodate(page));
		iomap_page_create(inode, page);
		set_page_dirty(page);
		}