* [PATCH] BLKGETSIZE64 broken in 2.4.18-pre1, 2.5.2-pre7
@ 2002-01-04 17:40 Eric Sandeen
0 siblings, 0 replies; only message in thread
From: Eric Sandeen @ 2002-01-04 17:40 UTC (permalink / raw)
To: linux-kernel; +Cc: torvalds, marcelo
BLKGETSIZE64 is supposed to return device size in bytes:
#define BLKGETSIZE64 _IOR(0x12,114,sizeof(u64)) /* return device size in
bytes (u64 *arg) */
but in drivers/block/blkpg.c, it's just returning device size/512 as a
u64 number.
This patch should apply to both kernels.
--- linux/drivers/block/blkpg.c.orig Fri Jan 4 11:30:37 2002
+++ linux/drivers/block/blkpg.c Fri Jan 4 11:31:15 2002
@@ -247,7 +247,7 @@
if (cmd == BLKGETSIZE)
return put_user((unsigned long)ullval, (unsigned long *)arg);
else
- return put_user(ullval, (u64 *)arg);
+ return put_user(ullval << 9, (u64 *)arg);
#if 0
case BLKRRPART: /* Re-read partition tables */
if (!capable(CAP_SYS_ADMIN))
--
Eric Sandeen XFS for Linux http://oss.sgi.com/projects/xfs
sandeen@sgi.com SGI, Inc.
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2002-01-04 17:40 [PATCH] BLKGETSIZE64 broken in 2.4.18-pre1, 2.5.2-pre7 Eric Sandeen
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