From: Robert Jennings <[email protected]> On a 64K page kernel, the value PAGE_SIZE passed to blk_queue_logical_block_size would overflow the logical block size argument (resulting in setting it to 0).
This patch sets the logical block size to 4096, using a new ZRAM_LOGICAL_BLOCK_SIZE constant. Signed-off-by: Robert Jennings <[email protected]> Reviewed-by: Pekka Enberg <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]> --- drivers/staging/zram/zram_drv.c | 3 ++- drivers/staging/zram/zram_drv.h | 1 + 2 files changed, 3 insertions(+), 1 deletions(-) diff --git a/drivers/staging/zram/zram_drv.c b/drivers/staging/zram/zram_drv.c index 5ed4e75..3c8ecab 100644 --- a/drivers/staging/zram/zram_drv.c +++ b/drivers/staging/zram/zram_drv.c @@ -616,7 +616,8 @@ static int create_device(struct zram *zram, int device_id) * and n*PAGE_SIZED sized I/O requests. */ blk_queue_physical_block_size(zram->disk->queue, PAGE_SIZE); - blk_queue_logical_block_size(zram->disk->queue, PAGE_SIZE); + blk_queue_logical_block_size(zram->disk->queue, + ZRAM_LOGICAL_BLOCK_SIZE); blk_queue_io_min(zram->disk->queue, PAGE_SIZE); blk_queue_io_opt(zram->disk->queue, PAGE_SIZE); diff --git a/drivers/staging/zram/zram_drv.h b/drivers/staging/zram/zram_drv.h index a481551..408b2c0 100644 --- a/drivers/staging/zram/zram_drv.h +++ b/drivers/staging/zram/zram_drv.h @@ -61,6 +61,7 @@ static const unsigned max_zpage_size = PAGE_SIZE / 4 * 3; #define SECTOR_SIZE (1 << SECTOR_SHIFT) #define SECTORS_PER_PAGE_SHIFT (PAGE_SHIFT - SECTOR_SHIFT) #define SECTORS_PER_PAGE (1 << SECTORS_PER_PAGE_SHIFT) +#define ZRAM_LOGICAL_BLOCK_SIZE 4096 /* Flags for zram pages (table[page_no].flags) */ enum zram_pageflags { -- 1.7.4.1 _______________________________________________ devel mailing list [email protected] http://driverdev.linuxdriverproject.org/mailman/listinfo/devel
