c/mirror_zfs
1
0
Fork 0
mirror of https://git.proxmox.com/git/mirror_zfs.git synced 2026-05-23 10:54:35 +03:00
Code Issues Packages Projects Releases Wiki Activity

Linux 4.1 compat: use read_iter() / write_iter()

Browse Source 
Linux 3.15 commit torvalds/linux@293bc98 introduced two new methods.
The ->read_iter() and ->write_iter() methods were designed to replace
the ->aio_read() and ->aio_write() interfaces.  Both interfaces were
preserved for several kernel releases in order to migrate all existing
consumers to the new interfaces.  But as of Linux 4.1 the legacy
interface has been retired and the ZFS code must be updated to use
the new interfaces.

Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #3352
This commit is contained in:
Matus Kral
2015-05-12 01:26:18 +02:00
committed by Brian Behlendorf
parent ec1c11d5ee
commit 57ae840077
3 changed files with 70 additions and 8 deletions
Download Patch File Download Diff File Expand all files Collapse all files
config/kernel-vfs-rw-iterate.m4
+27
View File
@@ -0,0 +1,27 @@
dnl #
dnl # Linux 4.1.x API
dnl #
AC_DEFUN([ZFS_AC_KERNEL_VFS_RW_ITERATE],
[AC_MSG_CHECKING([whether fops->read/write_iter() are available])
ZFS_LINUX_TRY_COMPILE([
#include <linux/fs.h>
ssize_t test_read(struct kiocb *kiocb, struct iov_iter *to)
{ return 0; }
ssize_t test_write(struct kiocb *kiocb, struct iov_iter *from)
{ return 0; }
static const struct file_operations
fops __attribute__ ((unused)) = {
.read_iter = test_read,
.write_iter = test_write,
};
],[
],[
AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_VFS_RW_ITERATE, 1,
[fops->read/write_iter() are available])
],[
AC_MSG_RESULT(no)
])
])
config/kernel.m4
+1
View File
@@ -96,6 +96,7 @@ AC_DEFUN([ZFS_AC_CONFIG_KERNEL], [
ZFS_AC_KERNEL_5ARG_SGET
ZFS_AC_KERNEL_LSEEK_EXECUTE
ZFS_AC_KERNEL_VFS_ITERATE
ZFS_AC_KERNEL_VFS_RW_ITERATE
AS_IF([test "$LINUX_OBJ" != "$LINUX"], [
KERNELMAKE_PARAMS="$KERNELMAKE_PARAMS O=$LINUX_OBJ"