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Linux 6.18: replace write_cache_pages()

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Linux 6.18 removed write_cache_pages() without a usable replacement.
Here we implement a minimal zpl_write_cache_pages() that find the dirty
pages within the mapping, gets them into the expected state and hands
them off to zfs_putpage(), which handles the rest.

Sponsored-by: https://despairlabs.com/sponsor/
Signed-off-by: Rob Norris <robn@despairlabs.com>
This commit is contained in:
Rob Norris
2025-09-12 09:31:35 +10:00
committed by Tony Hutter
parent 04d0f83f4e
commit 005c631499
4 changed files with 134 additions and 28 deletions
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config/kernel.m4
+2 -2
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@@ -121,7 +121,7 @@ AC_DEFUN([ZFS_AC_KERNEL_TEST_SRC], [
ZFS_AC_KERNEL_SRC_IDMAP_MNT_API
ZFS_AC_KERNEL_SRC_IDMAP_NO_USERNS
ZFS_AC_KERNEL_SRC_IATTR_VFSID
ZFS_AC_KERNEL_SRC_WRITEPAGE_T
ZFS_AC_KERNEL_SRC_WRITEBACK
ZFS_AC_KERNEL_SRC_RECLAIMED
ZFS_AC_KERNEL_SRC_REGISTER_SYSCTL_TABLE
ZFS_AC_KERNEL_SRC_REGISTER_SYSCTL_SZ
@@ -240,7 +240,7 @@ AC_DEFUN([ZFS_AC_KERNEL_TEST_RESULT], [
ZFS_AC_KERNEL_IDMAP_MNT_API
ZFS_AC_KERNEL_IDMAP_NO_USERNS
ZFS_AC_KERNEL_IATTR_VFSID
ZFS_AC_KERNEL_WRITEPAGE_T
ZFS_AC_KERNEL_WRITEBACK
ZFS_AC_KERNEL_RECLAIMED
ZFS_AC_KERNEL_REGISTER_SYSCTL_TABLE
ZFS_AC_KERNEL_REGISTER_SYSCTL_SZ