diff options
| author | Brian Behlendorf <[email protected]> | 2015-07-15 10:54:26 -0700 |
|---|---|---|
| committer | Brian Behlendorf <[email protected]> | 2015-07-17 09:18:16 -0700 |
| commit | bd29109f1ac5be68f7f7c8bcb49e1b706fe899f0 (patch) | |
| tree | 6aa5f76ed5f9748ffbb8949b752826001c9fbb1e /config/kernel-lookup-nameidata.m4 | |
| parent | 7eb333fbdde32dbebdcc88c35610159e207237c9 (diff) | |
Linux 4.2 compat: follow_link() / put_link()
As of Linux 4.2 the kernel has completely retired the nameidata
structure. One of the few remaining consumers of this interface
were the follow_link() and put_link() callbacks.
This patch adds the required checks to configure to detect the
interface change and updates the functions accordingly. Migrating
to the simple_follow_link() interface was considered but was decided
against ironically due to the increased complexity.
It also should be noted that the kernel follow_link() and put_link()
interfaces changes several times after 4.1 and but before 4.2. This
means there is a narrow range of kernel commits which never appear
in an official tag of the Linux kernel which ZoL will not build.
Signed-off-by: Brian Behlendorf <[email protected]>
Signed-off-by: Richard Yao <[email protected]>
Issue #3596
Diffstat (limited to 'config/kernel-lookup-nameidata.m4')
| -rw-r--r-- | config/kernel-lookup-nameidata.m4 | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/config/kernel-lookup-nameidata.m4 b/config/kernel-lookup-nameidata.m4 index 645560398..43f5fb4cb 100644 --- a/config/kernel-lookup-nameidata.m4 +++ b/config/kernel-lookup-nameidata.m4 @@ -2,7 +2,7 @@ dnl # dnl # 3.6 API change dnl # AC_DEFUN([ZFS_AC_KERNEL_LOOKUP_NAMEIDATA], [ - AC_MSG_CHECKING([whether iops->lookup() takes struct nameidata]) + AC_MSG_CHECKING([whether iops->lookup() passes nameidata]) ZFS_LINUX_TRY_COMPILE([ #include <linux/fs.h> @@ -18,7 +18,7 @@ AC_DEFUN([ZFS_AC_KERNEL_LOOKUP_NAMEIDATA], [ ],[ AC_MSG_RESULT(yes) AC_DEFINE(HAVE_LOOKUP_NAMEIDATA, 1, - [iops->lookup() operation takes nameidata]) + [iops->lookup() passes nameidata]) ],[ AC_MSG_RESULT(no) ]) |