The patch titled LOOP_SET_CAPACITY sector_t may be narrow for bit-shfit has been added to the -mm tree. Its filename is loop-add-ioctl-to-resize-a-loop-device-loop_set_capacity-sector_t-may-be-narrow-for-bit-shfit.patch Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/SubmitChecklist when testing your code *** See http://userweb.kernel.org/~akpm/stuff/added-to-mm.txt to find out what to do about this The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/ ------------------------------------------------------ Subject: LOOP_SET_CAPACITY sector_t may be narrow for bit-shfit From: "J. R. Okajima" <hooanon05@xxxxxxxxxxx> Fixing the bug pointed out by Andrew Morton, shift loff_t instead of sector_t since sector_t may be 32-bit. Signed-off-by: J. R. Okajima <hooanon05@xxxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- drivers/block/loop.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff -puN drivers/block/loop.c~loop-add-ioctl-to-resize-a-loop-device-loop_set_capacity-sector_t-may-be-narrow-for-bit-shfit drivers/block/loop.c --- a/drivers/block/loop.c~loop-add-ioctl-to-resize-a-loop-device-loop_set_capacity-sector_t-may-be-narrow-for-bit-shfit +++ a/drivers/block/loop.c @@ -1171,7 +1171,9 @@ static int loop_set_capacity(struct loop if (unlikely(err)) goto out; sec = get_capacity(lo->lo_disk); - sz = sec << 9; + /* the width of sector_t may be narrow for bit-shift */ + sz = sec; + sz <<= 9; mutex_lock(&bdev->bd_mutex); bd_set_size(bdev, sz); mutex_unlock(&bdev->bd_mutex); _ Patches currently in -mm which might be from hooanon05@xxxxxxxxxxx are loop-add-ioctl-to-resize-a-loop-device.patch loop-add-ioctl-to-resize-a-loop-device-security-check-for-loop_set_capacity.patch loop-add-ioctl-to-resize-a-loop-device-loop_set_capacity-sector_t-may-be-narrow-for-bit-shfit.patch -- To unsubscribe from this list: send the line "unsubscribe mm-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html