The patch titled brd: don't show ramdisks in /proc/partitions has been removed from the -mm tree. Its filename was brd-dont-show-ramdisks-in-proc-partitions.patch This patch was dropped because it was merged into mainline or a subsystem tree The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/ ------------------------------------------------------ Subject: brd: don't show ramdisks in /proc/partitions From: Marcin Krol <hawk@xxxxxxxxxxxxx> In 2.6.25, ramdisk devices show up in /proc/partitions, which is a behaviour change from the old rd.c. Add GENHD_FL_SUPPRESS_PARTITION_INFO, which was present in rd.c. All kernels prior to 2.6.25 weren't displaying ramdisks in /proc/partitions. Since there are many userspace tools using information from /proc/partitions some of them may now behave incorrectly (I didn't tested any though). For example before 2.6.25 /proc/partitions was empty if no block devices like hard disks and such were detected by kernel. Now all 16 ramdisks are always visible there. Some software may rely on such information (I mean, on empty /proc/partitions). There was quite similar situation back in 2004, and ramdisks were excluded back from displaying. Thats why I called this a regression (maybe a bit unfortunate). See this patch for info: http://kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.3-rc2/2.6.3-rc2-mm1/broken-out/nbd-proc-partitions-fix.patch I also think that someone somewhere (long time ago) excluded ramdisks from /proc/partitions for good reasons. It is possible that now such new "feature" is harmless, but I think there are more chances that someone will say "hey, /proc/partitions has changed, now my software doesn't work" then "hey where did my new 2.6.25 feature go". nbd devices are also excluded, maybe for very same (unknown to me) reasons. Signed-off-by: Marcin Krol <hawk@xxxxxxxxxxxxx> Signed-off-by: Nick Piggin <npiggin@xxxxxxx> Cc: <stable@xxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- drivers/block/brd.c | 1 + 1 file changed, 1 insertion(+) diff -puN drivers/block/brd.c~brd-dont-show-ramdisks-in-proc-partitions drivers/block/brd.c --- a/drivers/block/brd.c~brd-dont-show-ramdisks-in-proc-partitions +++ a/drivers/block/brd.c @@ -447,6 +447,7 @@ static struct brd_device *brd_alloc(int disk->fops = &brd_fops; disk->private_data = brd; disk->queue = brd->brd_queue; + disk->flags |= GENHD_FL_SUPPRESS_PARTITION_INFO; sprintf(disk->disk_name, "ram%d", i); set_capacity(disk, rd_size * 2); _ Patches currently in -mm which might be from hawk@xxxxxxxxxxxxx are -- 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