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iomap: remove set_memor_ro() on zero page

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Stephen reported a boot failure on ppc power8 system where
set_memor_ro() on the new zero page failed [0]. Christophe Leroy
further clarifies we can't use this on on linear memory on ppc, and
so instead of special casing this just for PowerPC [2] remove the
call as suggested by Darrick.

[0] https://lore.kernel.org/all/20240826175931.1989f99e@canb.auug.org.au/T/#u
[1] https://lore.kernel.org/all/b0fe75b4-c1bb-47f7-a7c3-2534b31c1780@csgroup.eu/
[2] https://lore.kernel.org/all/ZszrJkFOpiy5rCma@bombadil.infradead.org/

Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Suggested-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Luis Chamberlain <mcgrof@kernel.org>
Link: https://lore.kernel.org/r/20240826212632.2098685-1-mcgrof@kernel.org
Tested-by: Stephen Rothwell <sfr@canb.auug.org.au>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Christian Brauner <brauner@kernel.org>
This commit is contained in:
Luis Chamberlain 2024-08-26 14:26:32 -07:00 committed by Christian Brauner
parent 7ccd606be7
commit d1dd75dcda
1 changed files with 0 additions and 3 deletions
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3
fs/iomap/direct-io.c
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@ -11,7 +11,6 @@
#include <linux/iomap.h>
#include <linux/backing-dev.h>
#include <linux/uio.h>
#include <linux/set_memory.h>
#include <linux/task_io_accounting_ops.h>
#include "trace.h"
@ -781,8 +780,6 @@ static int __init iomap_dio_init(void)
if (!zero_page)
return -ENOMEM;
set_memory_ro((unsigned long)page_address(zero_page),
1U << IOMAP_ZERO_PAGE_ORDER);
return 0;
}
fs_initcall(iomap_dio_init);