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Su Yue 60196f92bb md/md-bitmap: fix wrong bitmap_limit for clustermd when write sb commit `6130825f34` upstream. In clustermd, separate write-intent-bitmaps are used for each cluster node: 0 4k 8k 12k ------------------------------------------------------------------- \| idle \| md super \| bm super [0] + bits \| \| bm bits[0, contd] \| bm super[1] + bits \| bm bits[1, contd] \| \| bm super[2] + bits \| bm bits [2, contd] \| bm super[3] + bits \| \| bm bits [3, contd] \| \| \| So in node 1, pg_index in __write_sb_page() could equal to bitmap->storage.file_pages. Then bitmap_limit will be calculated to 0. md_super_write() will be called with 0 size. That means the first 4k sb area of node 1 will never be updated through filemap_write_page(). This bug causes hang of mdadm/clustermd_tests/01r1_Grow_resize. Here use (pg_index % bitmap->storage.file_pages) to make calculation of bitmap_limit correct. Fixes: `ab99a87542` ("md/md-bitmap: fix writing non bitmap pages") Signed-off-by: Su Yue <glass.su@suse.com> Reviewed-by: Heming Zhao <heming.zhao@suse.com> Link: https://lore.kernel.org/linux-raid/20250303033918.32136-1-glass.su@suse.com Signed-off-by: Yu Kuai <yukuai3@huawei.com> Signed-off-by: Harshit Mogalapalli <harshit.m.mogalapalli@oracle.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2025-09-09 18:58:21 +02:00
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drivers	md/md-bitmap: fix wrong bitmap_limit for clustermd when write sb	2025-09-09 18:58:21 +02:00
fs	ext4: avoid journaling sb update on error if journal is destroying	2025-09-09 18:58:20 +02:00
include	net: dsa: provide implementation of .support_eee()	2025-09-09 18:58:19 +02:00
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net	net: dsa: provide implementation of .support_eee()	2025-09-09 18:58:19 +02:00
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README

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the reStructuredText markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.