diff options
| author | Kefeng Wang <wangkefeng.wang@huawei.com> | 2023-05-16 14:38:15 +0800 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2023-06-09 16:25:23 -0700 |
| commit | 0866e82e40fba45dae07e6e8385929b574201752 (patch) | |
| tree | d0d2d78e7fd27caaef499780a1f845c9929d297f /mm/page_alloc.c | |
| parent | e9f2b529e10f9ca8d25ac83e574e027d504de879 (diff) | |
mm: page_alloc: split out FAIL_PAGE_ALLOC
... to a single file to reduce a bit of page_alloc.c.
Link: https://lkml.kernel.org/r/20230516063821.121844-8-wangkefeng.wang@huawei.com
Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: "Huang, Ying" <ying.huang@intel.com>
Cc: Iurii Zaikin <yzaikin@google.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Len Brown <len.brown@intel.com>
Cc: Luis Chamberlain <mcgrof@kernel.org>
Cc: Mike Rapoport (IBM) <rppt@kernel.org>
Cc: Oscar Salvador <osalvador@suse.de>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: Rafael J. Wysocki <rafael@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'mm/page_alloc.c')
| -rw-r--r-- | mm/page_alloc.c | 74 |
1 files changed, 0 insertions, 74 deletions
diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 37ac82083229..2b8e4a086c3d 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -2994,80 +2994,6 @@ out: return page; } -#ifdef CONFIG_FAIL_PAGE_ALLOC - -static struct { - struct fault_attr attr; - - bool ignore_gfp_highmem; - bool ignore_gfp_reclaim; - u32 min_order; -} fail_page_alloc = { - .attr = FAULT_ATTR_INITIALIZER, - .ignore_gfp_reclaim = true, - .ignore_gfp_highmem = true, - .min_order = 1, -}; - -static int __init setup_fail_page_alloc(char *str) -{ - return setup_fault_attr(&fail_page_alloc.attr, str); -} -__setup("fail_page_alloc=", setup_fail_page_alloc); - -static bool __should_fail_alloc_page(gfp_t gfp_mask, unsigned int order) -{ - int flags = 0; - - if (order < fail_page_alloc.min_order) - return false; - if (gfp_mask & __GFP_NOFAIL) - return false; - if (fail_page_alloc.ignore_gfp_highmem && (gfp_mask & __GFP_HIGHMEM)) - return false; - if (fail_page_alloc.ignore_gfp_reclaim && - (gfp_mask & __GFP_DIRECT_RECLAIM)) - return false; - - /* See comment in __should_failslab() */ - if (gfp_mask & __GFP_NOWARN) - flags |= FAULT_NOWARN; - - return should_fail_ex(&fail_page_alloc.attr, 1 << order, flags); -} - -#ifdef CONFIG_FAULT_INJECTION_DEBUG_FS - -static int __init fail_page_alloc_debugfs(void) -{ - umode_t mode = S_IFREG | 0600; - struct dentry *dir; - - dir = fault_create_debugfs_attr("fail_page_alloc", NULL, - &fail_page_alloc.attr); - - debugfs_create_bool("ignore-gfp-wait", mode, dir, - &fail_page_alloc.ignore_gfp_reclaim); - debugfs_create_bool("ignore-gfp-highmem", mode, dir, - &fail_page_alloc.ignore_gfp_highmem); - debugfs_create_u32("min-order", mode, dir, &fail_page_alloc.min_order); - - return 0; -} - -late_initcall(fail_page_alloc_debugfs); - -#endif /* CONFIG_FAULT_INJECTION_DEBUG_FS */ - -#else /* CONFIG_FAIL_PAGE_ALLOC */ - -static inline bool __should_fail_alloc_page(gfp_t gfp_mask, unsigned int order) -{ - return false; -} - -#endif /* CONFIG_FAIL_PAGE_ALLOC */ - noinline bool should_fail_alloc_page(gfp_t gfp_mask, unsigned int order) { return __should_fail_alloc_page(gfp_mask, order); |