diff options
Diffstat (limited to 'config/spl-build.m4')
| -rw-r--r-- | config/spl-build.m4 | 96 |
1 files changed, 28 insertions, 68 deletions
diff --git a/config/spl-build.m4 b/config/spl-build.m4 index 2514d8c5b..4b821e980 100644 --- a/config/spl-build.m4 +++ b/config/spl-build.m4 @@ -28,7 +28,6 @@ AC_DEFUN([SPL_AC_CONFIG_KERNEL], [ SPL_AC_TYPE_UINTPTR_T SPL_AC_2ARGS_REGISTER_SYSCTL SPL_AC_SHRINKER_CALLBACK - SPL_AC_PATH_IN_NAMEIDATA SPL_AC_TASK_CURR SPL_AC_CTL_UNNUMBERED SPL_AC_CTL_NAME @@ -81,9 +80,7 @@ AC_DEFUN([SPL_AC_CONFIG_KERNEL], [ SPL_AC_KERNEL_FALLOCATE SPL_AC_SHRINK_DCACHE_MEMORY SPL_AC_SHRINK_ICACHE_MEMORY - SPL_AC_KERN_PATH_PARENT_HEADER - SPL_AC_KERN_PATH_PARENT_SYMBOL - SPL_AC_KERN_PATH_LOCKED + SPL_AC_KERN_PATH SPL_AC_CONFIG_KALLSYMS SPL_AC_CONFIG_ZLIB_INFLATE SPL_AC_CONFIG_ZLIB_DEFLATE @@ -991,28 +988,6 @@ AC_DEFUN([SPL_AC_SHRINKER_CALLBACK],[ ]) dnl # -dnl # 2.6.25 API change, -dnl # struct path entry added to struct nameidata -dnl # -AC_DEFUN([SPL_AC_PATH_IN_NAMEIDATA], - [AC_MSG_CHECKING([whether struct path used in struct nameidata]) - SPL_LINUX_TRY_COMPILE([ - #include <linux/namei.h> - ],[ - struct nameidata nd __attribute__ ((unused)); - - nd.path.mnt = NULL; - nd.path.dentry = NULL; - ],[ - AC_MSG_RESULT(yes) - AC_DEFINE(HAVE_PATH_IN_NAMEIDATA, 1, - [struct path used in struct nameidata]) - ],[ - AC_MSG_RESULT(no) - ]) -]) - -dnl # dnl # Custom SPL patch may export this system it is not required dnl # AC_DEFUN([SPL_AC_TASK_CURR], @@ -2279,56 +2254,41 @@ AC_DEFUN([SPL_AC_SHRINK_ICACHE_MEMORY], ]) dnl # -dnl # 2.6.39 API compat, -dnl # The path_lookup() function has been renamed to kern_path_parent() -dnl # and the flags argument has been removed. The only behavior now -dnl # offered is that of LOOKUP_PARENT. The spl already always passed -dnl # this flag so dropping the flag does not impact us. -dnl # -AC_DEFUN([SPL_AC_KERN_PATH_PARENT_HEADER], [ - SPL_CHECK_SYMBOL_HEADER( - [kern_path_parent], - [int kern_path_parent(const char \*, struct nameidata \*)], - [include/linux/namei.h], - [AC_DEFINE(HAVE_KERN_PATH_PARENT_HEADER, 1, - [kern_path_parent() is available])], - []) -]) - -dnl # -dnl # 3.1 API compat, -dnl # The kern_path_parent() symbol is no longer exported by the kernel. -dnl # However, it remains the prefered interface and since we still have -dnl # access to the prototype we dynamically lookup the required address. +dnl # 2.6.28 API change +dnl # The kern_path() function has been introduced. We adopt it as the new way +dnl # of looking up paths. When it is not available, we emulate it using the +dnl # older interfaces. dnl # -AC_DEFUN([SPL_AC_KERN_PATH_PARENT_SYMBOL], - [AC_MSG_CHECKING([whether kern_path_parent() is available]) +AC_DEFUN([SPL_AC_KERN_PATH], + [AC_MSG_CHECKING([whether kern_path() is available]) SPL_LINUX_TRY_COMPILE_SYMBOL([ #include <linux/namei.h> ], [ - kern_path_parent(NULL, NULL); - ], [kern_path_parent], [fs/namei.c], [ + int r = kern_path(NULL, 0, NULL); + ], [kern_path], [fs/namei.c], [ AC_MSG_RESULT(yes) - AC_DEFINE(HAVE_KERN_PATH_PARENT_SYMBOL, 1, - [kern_path_parent() is available]) + AC_DEFINE(HAVE_KERN_PATH, 1, + [kern_path() is available]) ], [ AC_MSG_RESULT(no) - ]) -]) + AC_MSG_CHECKING([whether path_lookup() is available]) + SPL_LINUX_TRY_COMPILE_SYMBOL([ + #include <linux/namei.h> + ], [ + int r = path_lookup(NULL, 0, NULL); + ], [path_lookup], [fs/namei.c], [ + AC_MSG_RESULT(yes) + AC_DEFINE(HAVE_KERN_PATH, 1, + [kern_path() is available]) + ], [ + AC_MSG_RESULT(no) + AC_MSG_ERROR([ + *** Neither kern_path() nor path_lookup() is available. + *** Please file an issue: + *** https://github.com/zfsonlinux/spl/issues/new]) -dnl # -dnl # 3.6 API compat, -dnl # The kern_path_parent() function was replaced by the kern_path_locked() -dnl # function to eliminate all struct nameidata usage outside fs/namei.c. -dnl # -AC_DEFUN([SPL_AC_KERN_PATH_LOCKED], [ - SPL_CHECK_SYMBOL_HEADER( - [kern_path_locked], - [struct dentry \*kern_path_locked(const char \*, struct path \*)], - [include/linux/namei.h], - [AC_DEFINE(HAVE_KERN_PATH_LOCKED, 1, - [kern_path_locked() is available])], - []) + ]) + ]) ]) dnl # |