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Message-ID: <20060729174826.GB26963@stusta.de>
Date: Sat, 29 Jul 2006 19:48:26 +0200
From: Adrian Bunk <bunk@...sta.de>
To: NeilBrown <neilb@...e.de>
Cc: mingo@...hat.com, linux-raid@...r.kernel.or,
linux-kernel@...r.kernel.org
Subject: [RFC: 2.6 patch] the scheduled removal of the START_ARRAY ioctl for md
This patch contains the scheduled removal of the START_ARRAY ioctl for md.
Signed-off-by: Adrian Bunk <bunk@...sta.de>
---
Documentation/feature-removal-schedule.txt | 9 --
drivers/md/md.c | 82 ---------------------
include/linux/compat_ioctl.h | 1
include/linux/raid/md_u.h | 2
4 files changed, 1 insertion(+), 93 deletions(-)
--- linux-2.6.18-rc2-mm1-full/Documentation/feature-removal-schedule.txt.old 2006-07-27 20:38:18.000000000 +0200
+++ linux-2.6.18-rc2-mm1-full/Documentation/feature-removal-schedule.txt 2006-07-27 20:38:30.000000000 +0200
@@ -87,15 +87,6 @@
---------------------------
-What: START_ARRAY ioctl for md
-When: July 2006
-Files: drivers/md/md.c
-Why: Not reliable by design - can fail when most needed.
- Alternatives exist
-Who: NeilBrown <neilb@...e.de>
-
----------------------------
-
What: eepro100 network driver
When: January 2007
Why: replaced by the e100 driver
--- linux-2.6.18-rc2-mm1-full/include/linux/raid/md_u.h.old 2006-07-27 20:38:39.000000000 +0200
+++ linux-2.6.18-rc2-mm1-full/include/linux/raid/md_u.h 2006-07-27 20:39:22.000000000 +0200
@@ -41,7 +41,7 @@
/* usage */
#define RUN_ARRAY _IOW (MD_MAJOR, 0x30, mdu_param_t)
-#define START_ARRAY _IO (MD_MAJOR, 0x31)
+/* 0x31 was START_ARRAY */
#define STOP_ARRAY _IO (MD_MAJOR, 0x32)
#define STOP_ARRAY_RO _IO (MD_MAJOR, 0x33)
#define RESTART_ARRAY_RW _IO (MD_MAJOR, 0x34)
--- linux-2.6.18-rc2-mm1-full/include/linux/compat_ioctl.h.old 2006-07-27 20:39:30.000000000 +0200
+++ linux-2.6.18-rc2-mm1-full/include/linux/compat_ioctl.h 2006-07-27 20:39:44.000000000 +0200
@@ -120,7 +120,6 @@
ULONG_IOCTL(HOT_ADD_DISK)
ULONG_IOCTL(SET_DISK_FAULTY)
COMPATIBLE_IOCTL(RUN_ARRAY)
-ULONG_IOCTL(START_ARRAY)
COMPATIBLE_IOCTL(STOP_ARRAY)
COMPATIBLE_IOCTL(STOP_ARRAY_RO)
COMPATIBLE_IOCTL(RESTART_ARRAY_RW)
--- linux-2.6.18-rc2-mm1-full/drivers/md/md.c.old 2006-07-27 20:39:52.000000000 +0200
+++ linux-2.6.18-rc2-mm1-full/drivers/md/md.c 2006-07-27 20:41:04.000000000 +0200
@@ -3427,67 +3427,6 @@
printk(KERN_INFO "md: ... autorun DONE.\n");
}
-/*
- * import RAID devices based on one partition
- * if possible, the array gets run as well.
- */
-
-static int autostart_array(dev_t startdev)
-{
- char b[BDEVNAME_SIZE];
- int err = -EINVAL, i;
- mdp_super_t *sb = NULL;
- mdk_rdev_t *start_rdev = NULL, *rdev;
-
- start_rdev = md_import_device(startdev, 0, 0);
- if (IS_ERR(start_rdev))
- return err;
-
-
- /* NOTE: this can only work for 0.90.0 superblocks */
- sb = (mdp_super_t*)page_address(start_rdev->sb_page);
- if (sb->major_version != 0 ||
- sb->minor_version != 90 ) {
- printk(KERN_WARNING "md: can only autostart 0.90.0 arrays\n");
- export_rdev(start_rdev);
- return err;
- }
-
- if (test_bit(Faulty, &start_rdev->flags)) {
- printk(KERN_WARNING
- "md: can not autostart based on faulty %s!\n",
- bdevname(start_rdev->bdev,b));
- export_rdev(start_rdev);
- return err;
- }
- list_add(&start_rdev->same_set, &pending_raid_disks);
-
- for (i = 0; i < MD_SB_DISKS; i++) {
- mdp_disk_t *desc = sb->disks + i;
- dev_t dev = MKDEV(desc->major, desc->minor);
-
- if (!dev)
- continue;
- if (dev == startdev)
- continue;
- if (MAJOR(dev) != desc->major || MINOR(dev) != desc->minor)
- continue;
- rdev = md_import_device(dev, 0, 0);
- if (IS_ERR(rdev))
- continue;
-
- list_add(&rdev->same_set, &pending_raid_disks);
- }
-
- /*
- * possibly return codes
- */
- autorun_devices(0);
- return 0;
-
-}
-
-
static int get_version(void __user * arg)
{
mdu_version_t ver;
@@ -4246,27 +4185,6 @@
goto abort;
}
-
- if (cmd == START_ARRAY) {
- /* START_ARRAY doesn't need to lock the array as autostart_array
- * does the locking, and it could even be a different array
- */
- static int cnt = 3;
- if (cnt > 0 ) {
- printk(KERN_WARNING
- "md: %s(pid %d) used deprecated START_ARRAY ioctl. "
- "This will not be supported beyond July 2006\n",
- current->comm, current->pid);
- cnt--;
- }
- err = autostart_array(new_decode_dev(arg));
- if (err) {
- printk(KERN_WARNING "md: autostart failed!\n");
- goto abort;
- }
- goto done;
- }
-
err = mddev_lock(mddev);
if (err) {
printk(KERN_INFO
-
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