The patch titled
Subject: fsdax-zero-the-edges-if-source-is-hole-or-unwritten-fix
has been added to the -mm mm-unstable branch. Its filename is
fsdax-zero-the-edges-if-source-is-hole-or-unwritten-fix.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/fsdax-zero-the-edges-if-source-is-hole-or-unwritten-fix.patch
This patch will later appear in the mm-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Before you just go and hit "reply", please:
a) Consider who else should be cc'ed
b) Prefer to cc a suitable mailing list as well
c) Ideally: find the original patch on the mailing list and do a
reply-to-all to that, adding suitable additional cc's
*** Remember to use Documentation/process/submit-checklist.rst when testing your code ***
The -mm tree is included into linux-next via the mm-everything
branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
and is updated there every 2-3 working days
------------------------------------------------------
From: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Subject: fsdax-zero-the-edges-if-source-is-hole-or-unwritten-fix
Date: Thu Dec 1 04:37:42 PM PST 2022
update dax_iomap_copy_around() kerneldoc, per Darrick
Cc: Alistair Popple <apopple@xxxxxxxxxx>
Cc: Dan Williams <dan.j.williams@xxxxxxxxx>
Cc: Darrick J. Wong <djwong@xxxxxxxxxx>
Cc: Dave Chinner <david@xxxxxxxxxxxxx>
Cc: Jason Gunthorpe <jgg@xxxxxxxxxx>
Cc: John Hubbard <jhubbard@xxxxxxxxxx>
Cc: Shiyang Ruan <ruansy.fnst@xxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
fs/dax.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
--- a/fs/dax.c~fsdax-zero-the-edges-if-source-is-hole-or-unwritten-fix
+++ a/fs/dax.c
@@ -1092,7 +1092,8 @@ out:
}
/**
- * dax_iomap_copy_around - Copy the data from source to destination before write
+ * dax_iomap_copy_around - Prepare for an unaligned write to a shared/cow page
+ * by copying the data before and after the range to be written.
* @pos: address to do copy from.
* @length: size of copy operation.
* @align_size: aligned w.r.t align_size (either PMD_SIZE or PAGE_SIZE)
_
Patches currently in -mm which might be from akpm@xxxxxxxxxxxxxxxxxxxx are
revert-mm-align-larger-anonymous-mappings-on-thp-boundaries.patch
mm-gup-remove-foll_migration-fix.patch
fsdax-zero-the-edges-if-source-is-hole-or-unwritten-fix.patch
