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| author | Robert Jennings <rcj@linux.vnet.ibm.com> | 2011-01-28 14:58:17 (GMT) |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2011-02-04 21:29:11 (GMT) |
| commit | 7b19b8d45b216ff3186f066b31937bdbde066f08 (patch) | |
| tree | fa0264a6010c8e1833a1839726aa003e5f456885 /drivers/staging/zram/zram_drv.h | |
| parent | f3bc232c2eb1dac5ac3dbaca0099ce51a615a478 (diff) | |
| download | linux-fsl-qoriq-7b19b8d45b216ff3186f066b31937bdbde066f08.tar.xz | |
zram: Prevent overflow in logical block size
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 <rcj@linux.vnet.ibm.com>
Reviewed-by: Pekka Enberg <penberg@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/staging/zram/zram_drv.h')
| -rw-r--r-- | drivers/staging/zram/zram_drv.h | 1 |
1 files changed, 1 insertions, 0 deletions
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 { |