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| author | Sergey Senozhatsky <senozhatsky@chromium.org> | 2023-07-09 04:56:26 +0200 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2023-08-18 19:12:18 +0200 |
| commit | f9044f170c5e89a12116066d1b9b932e934b9efb (patch) | |
| tree | 4fe52dd2c284f2c8b6850ceddc1b7dc3159ac85f /mm/zsmalloc.c | |
| parent | selftests/mm: add uffd unit test for UFFDIO_POISON (diff) | |
| download | linux-f9044f170c5e89a12116066d1b9b932e934b9efb.tar.xz linux-f9044f170c5e89a12116066d1b9b932e934b9efb.zip | |
zsmalloc: remove obj_tagged()
obj_tagged() is not needed at this point, because objects can only have
one tag: OBJ_ALLOCATED_TAG. We needed obj_tagged() for the zsmalloc LRU
implementation, which has now been removed. Simplify zsmalloc code and
revert to the previous implementation that was in place before the
zsmalloc LRU series.
Link: https://lkml.kernel.org/r/20230709025817.3842416-1-senozhatsky@chromium.org
Signed-off-by: Sergey Senozhatsky <senozhatsky@chromium.org>
Acked-by: Nhat Pham <nphamcs@gmail.com>
Cc: Minchan Kim <minchan@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'mm/zsmalloc.c')
| -rw-r--r-- | mm/zsmalloc.c | 29 |
1 files changed, 7 insertions, 22 deletions
diff --git a/mm/zsmalloc.c b/mm/zsmalloc.c index 84beadc088b8..32f5bc4074df 100644 --- a/mm/zsmalloc.c +++ b/mm/zsmalloc.c @@ -795,8 +795,8 @@ static unsigned long handle_to_obj(unsigned long handle) return *(unsigned long *)handle; } -static bool obj_tagged(struct page *page, void *obj, unsigned long *phandle, - int tag) +static inline bool obj_allocated(struct page *page, void *obj, + unsigned long *phandle) { unsigned long handle; struct zspage *zspage = get_zspage(page); @@ -807,7 +807,7 @@ static bool obj_tagged(struct page *page, void *obj, unsigned long *phandle, } else handle = *(unsigned long *)obj; - if (!(handle & tag)) + if (!(handle & OBJ_ALLOCATED_TAG)) return false; /* Clear all tags before returning the handle */ @@ -815,11 +815,6 @@ static bool obj_tagged(struct page *page, void *obj, unsigned long *phandle, return true; } -static inline bool obj_allocated(struct page *page, void *obj, unsigned long *phandle) -{ - return obj_tagged(page, obj, phandle, OBJ_ALLOCATED_TAG); -} - static void reset_page(struct page *page) { __ClearPageMovable(page); @@ -1551,11 +1546,11 @@ static void zs_object_copy(struct size_class *class, unsigned long dst, } /* - * Find object with a certain tag in zspage from index object and + * Find alloced object in zspage from index object and * return handle. */ -static unsigned long find_tagged_obj(struct size_class *class, - struct page *page, int *obj_idx, int tag) +static unsigned long find_alloced_obj(struct size_class *class, + struct page *page, int *obj_idx) { unsigned int offset; int index = *obj_idx; @@ -1566,7 +1561,7 @@ static unsigned long find_tagged_obj(struct size_class *class, offset += class->size * index; while (offset < PAGE_SIZE) { - if (obj_tagged(page, addr + offset, &handle, tag)) + if (obj_allocated(page, addr + offset, &handle)) break; offset += class->size; @@ -1580,16 +1575,6 @@ static unsigned long find_tagged_obj(struct size_class *class, return handle; } -/* - * Find alloced object in zspage from index object and - * return handle. - */ -static unsigned long find_alloced_obj(struct size_class *class, - struct page *page, int *obj_idx) -{ - return find_tagged_obj(class, page, obj_idx, OBJ_ALLOCATED_TAG); -} - static void migrate_zspage(struct zs_pool *pool, struct zspage *src_zspage, struct zspage *dst_zspage) { |