diff options
| author | Brian Behlendorf <[email protected]> | 2012-08-18 11:01:22 -0700 |
|---|---|---|
| committer | Brian Behlendorf <[email protected]> | 2012-08-27 12:00:55 -0700 |
| commit | bc03e07a7c43b134c7936bba5e87fb8a526b6692 (patch) | |
| tree | 9ba0edf655073ad82a4841c9770403021f682aef /config | |
| parent | d47e664ad4b7468c43a97aa6d299d8756571155d (diff) | |
Revert "Detect kernels that honor gfp flags passed to vmalloc()"
This reverts commit 36811b4430aaea8c8b91bbe7d812a26799865499.
Which is no longer required because there is now SPL code in
place to safely handle the deadlocks the kernel patch was designed
to address. Therefore we can unconditionally use vmalloc() and
drop all the PF_MEMALLOC code.
Signed-off-by: Brian Behlendorf <[email protected]>
Diffstat (limited to 'config')
| -rw-r--r-- | config/spl-build.m4 | 36 |
1 files changed, 0 insertions, 36 deletions
diff --git a/config/spl-build.m4 b/config/spl-build.m4 index dad4c8ed2..b7ab54d32 100644 --- a/config/spl-build.m4 +++ b/config/spl-build.m4 @@ -88,7 +88,6 @@ AC_DEFUN([SPL_AC_CONFIG_KERNEL], [ SPL_AC_2ARGS_ZLIB_DEFLATE_WORKSPACESIZE SPL_AC_SHRINK_CONTROL_STRUCT SPL_AC_RWSEM_SPINLOCK_IS_RAW - SPL_AC_PMD_ALLOC_WITH_MASK ]) AC_DEFUN([SPL_AC_MODULE_SYMVERS], [ @@ -2235,38 +2234,3 @@ AC_DEFUN([SPL_AC_RWSEM_SPINLOCK_IS_RAW], [ ]) EXTRA_KCFLAGS="$tmp_flags" ]) - -dnl # -dnl # Proposed VM Subsystem Bug Fix -dnl # https://bugs.gentoo.org/show_bug.cgi?id=416685 -dnl # -dnl # Make __pte_alloc_kernel() honor gfp flags passed to vmalloc() -dnl # This is detected by checking a macro that is changed to support this. -dnl # -AC_DEFUN([SPL_AC_PMD_ALLOC_WITH_MASK], [ - AC_MSG_CHECKING([whether pmd_alloc_with_mask exists]) - SPL_LINUX_TRY_COMPILE([ - #if !defined(CONFIG_MMU) - #define CONFIG_MMU - #endif - - #if defined(RCH_HAS_4LEVEL_HACK) - #undef RCH_HAS_4LEVEL_HACK - #endif - - #include <linux/mm.h> - ],[ - struct mm_struct init_mm; - pud_t *pud = NULL; - unsigned long addr = 0; - gfp_t gfp_mask = GFP_KERNEL; - - pmd_alloc_with_mask(&init_mm, pud, addr, gfp_mask); - ],[ - AC_MSG_RESULT(yes) - AC_DEFINE(HAVE_PMD_ALLOC_WITH_MASK, 1, - [pmd_alloc_with_mask exists]) - ],[ - AC_MSG_RESULT(no) - ]) -]) |