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Linux 5.18 compat: use address_space_operations->readahead

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->readpages was removed and replaced by ->readahead. Define
zpl_readahead for kernels that don't have ->readpages.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Riccardo Schirone <rschirone91@gmail.com>
Closes #13278
This commit is contained in:
Riccardo Schirone
2022-04-02 01:15:25 +02:00
committed by Brian Behlendorf
parent 10a9f5fc47
commit 35ddd8ee2e
3 changed files with 48 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files
config/kernel-readpages.m4
+25
View File
@@ -0,0 +1,25 @@
dnl #
dnl # Linux 5.18 removes address_space_operations ->readpages in favour of
dnl # ->readahead
dnl #
AC_DEFUN([ZFS_AC_KERNEL_SRC_VFS_READPAGES], [
ZFS_LINUX_TEST_SRC([vfs_has_readpages], [
#include <linux/fs.h>
static const struct address_space_operations
aops __attribute__ ((unused)) = {
.readpages = NULL,
};
],[])
])
AC_DEFUN([ZFS_AC_KERNEL_VFS_READPAGES], [
AC_MSG_CHECKING([address_space_operations->readpages exists])
ZFS_LINUX_TEST_RESULT([vfs_has_readpages], [
AC_MSG_RESULT([yes])
AC_DEFINE(HAVE_VFS_READPAGES, 1,
[address_space_operations->readpages exists])
],[
AC_MSG_RESULT([no])
])
])
config/kernel.m4
+2
View File
@@ -132,6 +132,7 @@ AC_DEFUN([ZFS_AC_KERNEL_TEST_SRC], [
ZFS_AC_KERNEL_SRC_SIGNAL_STOP
ZFS_AC_KERNEL_SRC_SIGINFO
ZFS_AC_KERNEL_SRC_SET_SPECIAL_STATE
ZFS_AC_KERNEL_SRC_VFS_READPAGES
ZFS_AC_KERNEL_SRC_VFS_SET_PAGE_DIRTY_NOBUFFERS
ZFS_AC_KERNEL_SRC_STANDALONE_LINUX_STDARG
ZFS_AC_KERNEL_SRC_PAGEMAP_FOLIO_WAIT_BIT
@@ -242,6 +243,7 @@ AC_DEFUN([ZFS_AC_KERNEL_TEST_RESULT], [
ZFS_AC_KERNEL_SIGNAL_STOP
ZFS_AC_KERNEL_SIGINFO
ZFS_AC_KERNEL_SET_SPECIAL_STATE
ZFS_AC_KERNEL_VFS_READPAGES
ZFS_AC_KERNEL_VFS_SET_PAGE_DIRTY_NOBUFFERS
ZFS_AC_KERNEL_STANDALONE_LINUX_STDARG
ZFS_AC_KERNEL_PAGEMAP_FOLIO_WAIT_BIT