diff options
| author | Rob Norris <[email protected]> | 2024-08-24 20:52:58 +1000 |
|---|---|---|
| committer | Brian Behlendorf <[email protected]> | 2024-09-18 11:23:50 -0700 |
| commit | 2c84b59e73c2cf72649e1b236ca49ceb803a7305 (patch) | |
| tree | 942d33c8077124bc20e0ec9a48832d8c9e3f0ba7 | |
| parent | 536a0a8a84f180b109a34a60120b58c4c765a18d (diff) | |
config: remove HAVE_KMEM_CACHE_CREATE_USERCOPY
Sponsored-by: https://despairlabs.com/sponsor/
Reviewed-by: Brian Behlendorf <[email protected]>
Reviewed-by: Tony Hutter <[email protected]>
Reviewed-by: Tino Reichardt <[email protected]>
Signed-off-by: Rob Norris <[email protected]>
Closes #16479
| -rw-r--r-- | config/kernel-kmem-cache.m4 | 41 | ||||
| -rw-r--r-- | config/kernel.m4 | 2 | ||||
| -rw-r--r-- | module/os/linux/spl/spl-kmem-cache.c | 17 |
3 files changed, 0 insertions, 60 deletions
diff --git a/config/kernel-kmem-cache.m4 b/config/kernel-kmem-cache.m4 deleted file mode 100644 index 0e9fe9eb2..000000000 --- a/config/kernel-kmem-cache.m4 +++ /dev/null @@ -1,41 +0,0 @@ -dnl # -dnl # grsecurity API change, -dnl # kmem_cache_create() with SLAB_USERCOPY flag replaced by -dnl # kmem_cache_create_usercopy(). -dnl # -AC_DEFUN([ZFS_AC_KERNEL_SRC_KMEM_CACHE_CREATE_USERCOPY], [ - ZFS_LINUX_TEST_SRC([kmem_cache_create_usercopy], [ - #include <linux/slab.h> - static void ctor(void *foo) { /* fake ctor */ } - ],[ - struct kmem_cache *skc_linux_cache; - const char *name = "test"; - size_t size = 4096; - size_t align = 8; - unsigned long flags = 0; - size_t useroffset = 0; - size_t usersize = size - useroffset; - - skc_linux_cache = kmem_cache_create_usercopy( - name, size, align, flags, useroffset, usersize, ctor); - ]) -]) - -AC_DEFUN([ZFS_AC_KERNEL_KMEM_CACHE_CREATE_USERCOPY], [ - AC_MSG_CHECKING([whether kmem_cache_create_usercopy() exists]) - ZFS_LINUX_TEST_RESULT([kmem_cache_create_usercopy], [ - AC_MSG_RESULT(yes) - AC_DEFINE(HAVE_KMEM_CACHE_CREATE_USERCOPY, 1, - [kmem_cache_create_usercopy() exists]) - ],[ - AC_MSG_RESULT(no) - ]) -]) - -AC_DEFUN([ZFS_AC_KERNEL_SRC_KMEM_CACHE], [ - ZFS_AC_KERNEL_SRC_KMEM_CACHE_CREATE_USERCOPY -]) - -AC_DEFUN([ZFS_AC_KERNEL_KMEM_CACHE], [ - ZFS_AC_KERNEL_KMEM_CACHE_CREATE_USERCOPY -]) diff --git a/config/kernel.m4 b/config/kernel.m4 index 38eb86280..eddb90a74 100644 --- a/config/kernel.m4 +++ b/config/kernel.m4 @@ -45,7 +45,6 @@ AC_DEFUN([ZFS_AC_KERNEL_TEST_SRC], [ ZFS_AC_KERNEL_SRC_GENERIC_FADVISE ZFS_AC_KERNEL_SRC_SCHED ZFS_AC_KERNEL_SRC_USLEEP_RANGE - ZFS_AC_KERNEL_SRC_KMEM_CACHE ZFS_AC_KERNEL_SRC_KVMALLOC ZFS_AC_KERNEL_SRC_VMALLOC_PAGE_KERNEL ZFS_AC_KERNEL_SRC_WAIT @@ -164,7 +163,6 @@ AC_DEFUN([ZFS_AC_KERNEL_TEST_RESULT], [ ZFS_AC_KERNEL_GENERIC_FADVISE ZFS_AC_KERNEL_SCHED ZFS_AC_KERNEL_USLEEP_RANGE - ZFS_AC_KERNEL_KMEM_CACHE ZFS_AC_KERNEL_KVMALLOC ZFS_AC_KERNEL_VMALLOC_PAGE_KERNEL ZFS_AC_KERNEL_WAIT diff --git a/module/os/linux/spl/spl-kmem-cache.c b/module/os/linux/spl/spl-kmem-cache.c index 7596f97b4..7e806bd56 100644 --- a/module/os/linux/spl/spl-kmem-cache.c +++ b/module/os/linux/spl/spl-kmem-cache.c @@ -786,25 +786,8 @@ spl_kmem_cache_create(const char *name, size_t size, size_t align, if (skc->skc_flags & KMC_RECLAIMABLE) slabflags |= SLAB_RECLAIM_ACCOUNT; -#if defined(SLAB_USERCOPY) - /* - * Required for PAX-enabled kernels if the slab is to be - * used for copying between user and kernel space. - */ - slabflags |= SLAB_USERCOPY; -#endif - -#if defined(HAVE_KMEM_CACHE_CREATE_USERCOPY) - /* - * Newer grsec patchset uses kmem_cache_create_usercopy() - * instead of SLAB_USERCOPY flag - */ skc->skc_linux_cache = kmem_cache_create_usercopy( skc->skc_name, size, align, slabflags, 0, size, NULL); -#else - skc->skc_linux_cache = kmem_cache_create( - skc->skc_name, size, align, slabflags, NULL); -#endif if (skc->skc_linux_cache == NULL) goto out; } |