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Linux 5.19 compat: aops->read_folio()

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As of the Linux 5.19 kernel the readpage() address space operation
has been replaced by read_folio().

Reviewed-by: Tony Hutter <hutter2@llnl.gov>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #13515
This commit is contained in:
Brian Behlendorf 2022-05-27 20:44:43 +00:00
parent a12a5cb5b8
commit c2c2e7bb8b
3 changed files with 46 additions and 0 deletions
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32
config/kernel-vfs-read_folio.m4 Normal file
View File

@ -0,0 +1,32 @@
dnl #
dnl # Linux 5.19 uses read_folio in lieu of readpage
dnl #
AC_DEFUN([ZFS_AC_KERNEL_SRC_VFS_READ_FOLIO], [
ZFS_LINUX_TEST_SRC([vfs_has_read_folio], [
#include <linux/fs.h>
static int
test_read_folio(struct file *file, struct folio *folio) {
(void) file; (void) folio;
return (0);
}
static const struct address_space_operations
aops __attribute__ ((unused)) = {
.read_folio = test_read_folio,
};
],[])
])
AC_DEFUN([ZFS_AC_KERNEL_VFS_READ_FOLIO], [
dnl #
dnl # Linux 5.19 uses read_folio in lieu of readpage
dnl #
AC_MSG_CHECKING([read_folio exists])
ZFS_LINUX_TEST_RESULT([vfs_has_read_folio], [
AC_MSG_RESULT([yes])
AC_DEFINE(HAVE_VFS_READ_FOLIO, 1, [read_folio exists])
],[
AC_MSG_RESULT([no])
])
])

2
config/kernel.m4
View File

@ -102,6 +102,7 @@ AC_DEFUN([ZFS_AC_KERNEL_TEST_SRC], [
ZFS_AC_KERNEL_SRC_SGET
ZFS_AC_KERNEL_SRC_LSEEK_EXECUTE
ZFS_AC_KERNEL_SRC_VFS_FILEMAP_DIRTY_FOLIO
ZFS_AC_KERNEL_SRC_VFS_READ_FOLIO
ZFS_AC_KERNEL_SRC_VFS_GETATTR
ZFS_AC_KERNEL_SRC_VFS_FSYNC_2ARGS
ZFS_AC_KERNEL_SRC_VFS_ITERATE
@ -219,6 +220,7 @@ AC_DEFUN([ZFS_AC_KERNEL_TEST_RESULT], [
ZFS_AC_KERNEL_SGET
ZFS_AC_KERNEL_LSEEK_EXECUTE
ZFS_AC_KERNEL_VFS_FILEMAP_DIRTY_FOLIO
ZFS_AC_KERNEL_VFS_READ_FOLIO
ZFS_AC_KERNEL_VFS_GETATTR
ZFS_AC_KERNEL_VFS_FSYNC_2ARGS
ZFS_AC_KERNEL_VFS_ITERATE

12
module/os/linux/zfs/zpl_file.c
View File

@ -674,11 +674,19 @@ zpl_readpage_common(struct page *pp)
return (error);
}
#ifdef HAVE_VFS_READ_FOLIO
static int
zpl_read_folio(struct file *filp, struct folio *folio)
{
return (zpl_readpage_common(&folio->page));
}
#else
static int
zpl_readpage(struct file *filp, struct page *pp)
{
return (zpl_readpage_common(pp));
}
#endif
static int
zpl_readpage_filler(void *data, struct page *pp)
@ -1208,7 +1216,11 @@ const struct address_space_operations zpl_address_space_operations = {
#else
.readahead = zpl_readahead,
#endif
#ifdef HAVE_VFS_READ_FOLIO
.read_folio = zpl_read_folio,
#else
.readpage = zpl_readpage,
#endif
.writepage = zpl_writepage,
.writepages = zpl_writepages,
.direct_IO = zpl_direct_IO,