From: Robert Jennings <[email protected]> This change is in a conditional block which is entered only when there is an existing data block on the freelist where the insert has taken place.
The new block is pushed onto the freelist stack and this conditional block is updating links in the prior stack head to point to the new stack head. After this conditional block the first-/second-level indices are updated to indicate that there is a free block at this location. This patch adds an immediate return from the conditional block to avoid setting bits again to indicate a free block on this freelist. The bits would already be set because there was an existing free block on this freelist. Signed-off-by: Robert Jennings <[email protected]> Reviewed-by: Pekka Enberg <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]> --- drivers/staging/zram/xvmalloc.c | 2 ++ 1 files changed, 2 insertions(+), 0 deletions(-) diff --git a/drivers/staging/zram/xvmalloc.c b/drivers/staging/zram/xvmalloc.c index 3ed744b..9cbe04a 100644 --- a/drivers/staging/zram/xvmalloc.c +++ b/drivers/staging/zram/xvmalloc.c @@ -200,6 +200,8 @@ static void insert_block(struct xv_pool *pool, struct page *page, u32 offset, nextblock->link.prev_page = page; nextblock->link.prev_offset = offset; put_ptr_atomic(nextblock, KM_USER1); + /* If there was a next page then the free bits are set. */ + return; } __set_bit(slindex % BITS_PER_LONG, &pool->slbitmap[flindex]); -- 1.7.4.1 _______________________________________________ devel mailing list [email protected] http://driverdev.linuxdriverproject.org/mailman/listinfo/devel
