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-rw-r--r--drivers/block/drbd/drbd_int.h2
-rw-r--r--drivers/block/drbd/drbd_main.c7
-rw-r--r--drivers/block/drbd/drbd_nl.c103
-rw-r--r--drivers/block/pktcdvd.c22
-rw-r--r--drivers/char/raw.c14
-rw-r--r--drivers/md/dm-table.c15
-rw-r--r--drivers/md/md.c14
-rw-r--r--drivers/mtd/devices/block2mtd.c17
-rw-r--r--drivers/s390/block/dasd_genhd.c2
9 files changed, 61 insertions, 135 deletions
diff --git a/drivers/block/drbd/drbd_int.h b/drivers/block/drbd/drbd_int.h
index 9bdcf4393c0a..0590b9f67ec6 100644
--- a/drivers/block/drbd/drbd_int.h
+++ b/drivers/block/drbd/drbd_int.h
@@ -923,8 +923,6 @@ struct drbd_md {
struct drbd_backing_dev {
struct block_device *backing_bdev;
struct block_device *md_bdev;
- struct file *lo_file;
- struct file *md_file;
struct drbd_md md;
struct disk_conf dc; /* The user provided config... */
sector_t known_size; /* last known size of that backing device */
diff --git a/drivers/block/drbd/drbd_main.c b/drivers/block/drbd/drbd_main.c
index 25c7a73c5062..7ec1a82064a9 100644
--- a/drivers/block/drbd/drbd_main.c
+++ b/drivers/block/drbd/drbd_main.c
@@ -3361,11 +3361,8 @@ void drbd_free_bc(struct drbd_backing_dev *ldev)
if (ldev == NULL)
return;
- bd_release(ldev->backing_bdev);
- bd_release(ldev->md_bdev);
-
- fput(ldev->lo_file);
- fput(ldev->md_file);
+ blkdev_put(ldev->backing_bdev, FMODE_READ | FMODE_WRITE | FMODE_EXCL);
+ blkdev_put(ldev->md_bdev, FMODE_READ | FMODE_WRITE | FMODE_EXCL);
kfree(ldev);
}
diff --git a/drivers/block/drbd/drbd_nl.c b/drivers/block/drbd/drbd_nl.c
index 87925e97e613..fd0346090289 100644
--- a/drivers/block/drbd/drbd_nl.c
+++ b/drivers/block/drbd/drbd_nl.c
@@ -855,7 +855,7 @@ static int drbd_nl_disk_conf(struct drbd_conf *mdev, struct drbd_nl_cfg_req *nlp
sector_t max_possible_sectors;
sector_t min_md_device_sectors;
struct drbd_backing_dev *nbc = NULL; /* new_backing_conf */
- struct inode *inode, *inode2;
+ struct block_device *bdev;
struct lru_cache *resync_lru = NULL;
union drbd_state ns, os;
unsigned int max_seg_s;
@@ -902,46 +902,40 @@ static int drbd_nl_disk_conf(struct drbd_conf *mdev, struct drbd_nl_cfg_req *nlp
}
}
- nbc->lo_file = filp_open(nbc->dc.backing_dev, O_RDWR, 0);
- if (IS_ERR(nbc->lo_file)) {
+ bdev = open_bdev_exclusive(nbc->dc.backing_dev,
+ FMODE_READ | FMODE_WRITE, mdev);
+ if (IS_ERR(bdev)) {
dev_err(DEV, "open(\"%s\") failed with %ld\n", nbc->dc.backing_dev,
- PTR_ERR(nbc->lo_file));
- nbc->lo_file = NULL;
+ PTR_ERR(bdev));
retcode = ERR_OPEN_DISK;
goto fail;
}
+ nbc->backing_bdev = bdev;
- inode = nbc->lo_file->f_dentry->d_inode;
-
- if (!S_ISBLK(inode->i_mode)) {
- retcode = ERR_DISK_NOT_BDEV;
- goto fail;
- }
-
- nbc->md_file = filp_open(nbc->dc.meta_dev, O_RDWR, 0);
- if (IS_ERR(nbc->md_file)) {
+ /*
+ * meta_dev_idx >= 0: external fixed size, possibly multiple
+ * drbd sharing one meta device. TODO in that case, paranoia
+ * check that [md_bdev, meta_dev_idx] is not yet used by some
+ * other drbd minor! (if you use drbd.conf + drbdadm, that
+ * should check it for you already; but if you don't, or
+ * someone fooled it, we need to double check here)
+ */
+ bdev = open_bdev_exclusive(nbc->dc.meta_dev,
+ FMODE_READ | FMODE_WRITE,
+ (nbc->dc.meta_dev_idx < 0) ?
+ (void *)mdev : (void *)drbd_m_holder);
+ if (IS_ERR(bdev)) {
dev_err(DEV, "open(\"%s\") failed with %ld\n", nbc->dc.meta_dev,
- PTR_ERR(nbc->md_file));
- nbc->md_file = NULL;
+ PTR_ERR(bdev));
retcode = ERR_OPEN_MD_DISK;
goto fail;
}
+ nbc->md_bdev = bdev;
- inode2 = nbc->md_file->f_dentry->d_inode;
-
- if (!S_ISBLK(inode2->i_mode)) {
- retcode = ERR_MD_NOT_BDEV;
- goto fail;
- }
-
- nbc->backing_bdev = inode->i_bdev;
- if (bd_claim(nbc->backing_bdev, mdev)) {
- printk(KERN_ERR "drbd: bd_claim(%p,%p); failed [%p;%p;%u]\n",
- nbc->backing_bdev, mdev,
- nbc->backing_bdev->bd_holder,
- nbc->backing_bdev->bd_contains->bd_holder,
- nbc->backing_bdev->bd_holders);
- retcode = ERR_BDCLAIM_DISK;
+ if ((nbc->backing_bdev == nbc->md_bdev) !=
+ (nbc->dc.meta_dev_idx == DRBD_MD_INDEX_INTERNAL ||
+ nbc->dc.meta_dev_idx == DRBD_MD_INDEX_FLEX_INT)) {
+ retcode = ERR_MD_IDX_INVALID;
goto fail;
}
@@ -950,28 +944,7 @@ static int drbd_nl_disk_conf(struct drbd_conf *mdev, struct drbd_nl_cfg_req *nlp
offsetof(struct bm_extent, lce));
if (!resync_lru) {
retcode = ERR_NOMEM;
- goto release_bdev_fail;
- }
-
- /* meta_dev_idx >= 0: external fixed size,
- * possibly multiple drbd sharing one meta device.
- * TODO in that case, paranoia check that [md_bdev, meta_dev_idx] is
- * not yet used by some other drbd minor!
- * (if you use drbd.conf + drbdadm,
- * that should check it for you already; but if you don't, or someone
- * fooled it, we need to double check here) */
- nbc->md_bdev = inode2->i_bdev;
- if (bd_claim(nbc->md_bdev, (nbc->dc.meta_dev_idx < 0) ? (void *)mdev
- : (void *) drbd_m_holder)) {
- retcode = ERR_BDCLAIM_MD_DISK;
- goto release_bdev_fail;
- }
-
- if ((nbc->backing_bdev == nbc->md_bdev) !=
- (nbc->dc.meta_dev_idx == DRBD_MD_INDEX_INTERNAL ||
- nbc->dc.meta_dev_idx == DRBD_MD_INDEX_FLEX_INT)) {
- retcode = ERR_MD_IDX_INVALID;
- goto release_bdev2_fail;
+ goto fail;
}
/* RT - for drbd_get_max_capacity() DRBD_MD_INDEX_FLEX_INT */
@@ -982,7 +955,7 @@ static int drbd_nl_disk_conf(struct drbd_conf *mdev, struct drbd_nl_cfg_req *nlp
(unsigned long long) drbd_get_max_capacity(nbc),
(unsigned long long) nbc->dc.disk_size);
retcode = ERR_DISK_TO_SMALL;
- goto release_bdev2_fail;
+ goto fail;
}
if (nbc->dc.meta_dev_idx < 0) {
@@ -999,7 +972,7 @@ static int drbd_nl_disk_conf(struct drbd_conf *mdev, struct drbd_nl_cfg_req *nlp
dev_warn(DEV, "refusing attach: md-device too small, "
"at least %llu sectors needed for this meta-disk type\n",
(unsigned long long) min_md_device_sectors);
- goto release_bdev2_fail;
+ goto fail;
}
/* Make sure the new disk is big enough
@@ -1007,7 +980,7 @@ static int drbd_nl_disk_conf(struct drbd_conf *mdev, struct drbd_nl_cfg_req *nlp
if (drbd_get_max_capacity(nbc) <
drbd_get_capacity(mdev->this_bdev)) {
retcode = ERR_DISK_TO_SMALL;
- goto release_bdev2_fail;
+ goto fail;
}
nbc->known_size = drbd_get_capacity(nbc->backing_bdev);
@@ -1030,7 +1003,7 @@ static int drbd_nl_disk_conf(struct drbd_conf *mdev, struct drbd_nl_cfg_req *nlp
retcode = _drbd_request_state(mdev, NS(disk, D_ATTACHING), CS_VERBOSE);
drbd_resume_io(mdev);
if (retcode < SS_SUCCESS)
- goto release_bdev2_fail;
+ goto fail;
if (!get_ldev_if_state(mdev, D_ATTACHING))
goto force_diskless;
@@ -1264,18 +1237,14 @@ static int drbd_nl_disk_conf(struct drbd_conf *mdev, struct drbd_nl_cfg_req *nlp
force_diskless:
drbd_force_state(mdev, NS(disk, D_DISKLESS));
drbd_md_sync(mdev);
- release_bdev2_fail:
- if (nbc)
- bd_release(nbc->md_bdev);
- release_bdev_fail:
- if (nbc)
- bd_release(nbc->backing_bdev);
fail:
if (nbc) {
- if (nbc->lo_file)
- fput(nbc->lo_file);
- if (nbc->md_file)
- fput(nbc->md_file);
+ if (nbc->backing_bdev)
+ blkdev_put(nbc->backing_bdev,
+ FMODE_READ | FMODE_WRITE | FMODE_EXCL);
+ if (nbc->md_bdev)
+ blkdev_put(nbc->md_bdev,
+ FMODE_READ | FMODE_WRITE | FMODE_EXCL);
kfree(nbc);
}
lc_destroy(resync_lru);
diff --git a/drivers/block/pktcdvd.c b/drivers/block/pktcdvd.c
index 19b3568e9326..77d70eebb6b2 100644
--- a/drivers/block/pktcdvd.c
+++ b/drivers/block/pktcdvd.c
@@ -2296,15 +2296,12 @@ static int pkt_open_dev(struct pktcdvd_device *pd, fmode_t write)
* so bdget() can't fail.
*/
bdget(pd->bdev->bd_dev);
- if ((ret = blkdev_get(pd->bdev, FMODE_READ)))
+ if ((ret = blkdev_get(pd->bdev, FMODE_READ | FMODE_EXCL, pd)))
goto out;
- if ((ret = bd_claim(pd->bdev, pd)))
- goto out_putdev;
-
if ((ret = pkt_get_last_written(pd, &lba))) {
printk(DRIVER_NAME": pkt_get_last_written failed\n");
- goto out_unclaim;
+ goto out_putdev;
}
set_capacity(pd->disk, lba << 2);
@@ -2314,7 +2311,7 @@ static int pkt_open_dev(struct pktcdvd_device *pd, fmode_t write)
q = bdev_get_queue(pd->bdev);
if (write) {
if ((ret = pkt_open_write(pd)))
- goto out_unclaim;
+ goto out_putdev;
/*
* Some CDRW drives can not handle writes larger than one packet,
* even if the size is a multiple of the packet size.
@@ -2329,23 +2326,21 @@ static int pkt_open_dev(struct pktcdvd_device *pd, fmode_t write)
}
if ((ret = pkt_set_segment_merging(pd, q)))
- goto out_unclaim;
+ goto out_putdev;
if (write) {
if (!pkt_grow_pktlist(pd, CONFIG_CDROM_PKTCDVD_BUFFERS)) {
printk(DRIVER_NAME": not enough memory for buffers\n");
ret = -ENOMEM;
- goto out_unclaim;
+ goto out_putdev;
}
printk(DRIVER_NAME": %lukB available on disc\n", lba << 1);
}
return 0;
-out_unclaim:
- bd_release(pd->bdev);
out_putdev:
- blkdev_put(pd->bdev, FMODE_READ);
+ blkdev_put(pd->bdev, FMODE_READ | FMODE_EXCL);
out:
return ret;
}
@@ -2362,8 +2357,7 @@ static void pkt_release_dev(struct pktcdvd_device *pd, int flush)
pkt_lock_door(pd, 0);
pkt_set_speed(pd, MAX_SPEED, MAX_SPEED);
- bd_release(pd->bdev);
- blkdev_put(pd->bdev, FMODE_READ);
+ blkdev_put(pd->bdev, FMODE_READ | FMODE_EXCL);
pkt_shrink_pktlist(pd);
}
@@ -2733,7 +2727,7 @@ static int pkt_new_dev(struct pktcdvd_device *pd, dev_t dev)
bdev = bdget(dev);
if (!bdev)
return -ENOMEM;
- ret = blkdev_get(bdev, FMODE_READ | FMODE_NDELAY);
+ ret = blkdev_get(bdev, FMODE_READ | FMODE_NDELAY, NULL);
if (ret)
return ret;
diff --git a/drivers/char/raw.c b/drivers/char/raw.c
index bfe25ea9766b..b4b9d5a47885 100644
--- a/drivers/char/raw.c
+++ b/drivers/char/raw.c
@@ -65,15 +65,12 @@ static int raw_open(struct inode *inode, struct file *filp)
if (!bdev)
goto out;
igrab(bdev->bd_inode);
- err = blkdev_get(bdev, filp->f_mode);
+ err = blkdev_get(bdev, filp->f_mode | FMODE_EXCL, raw_open);
if (err)
goto out;
- err = bd_claim(bdev, raw_open);
- if (err)
- goto out1;
err = set_blocksize(bdev, bdev_logical_block_size(bdev));
if (err)
- goto out2;
+ goto out1;
filp->f_flags |= O_DIRECT;
filp->f_mapping = bdev->bd_inode->i_mapping;
if (++raw_devices[minor].inuse == 1)
@@ -83,10 +80,8 @@ static int raw_open(struct inode *inode, struct file *filp)
mutex_unlock(&raw_mutex);
return 0;
-out2:
- bd_release(bdev);
out1:
- blkdev_put(bdev, filp->f_mode);
+ blkdev_put(bdev, filp->f_mode | FMODE_EXCL);
out:
mutex_unlock(&raw_mutex);
return err;
@@ -110,8 +105,7 @@ static int raw_release(struct inode *inode, struct file *filp)
}
mutex_unlock(&raw_mutex);
- bd_release(bdev);
- blkdev_put(bdev, filp->f_mode);
+ blkdev_put(bdev, filp->f_mode | FMODE_EXCL);
return 0;
}
diff --git a/drivers/md/dm-table.c b/drivers/md/dm-table.c
index 2c876ffc63df..9e88ca0c55e9 100644
--- a/drivers/md/dm-table.c
+++ b/drivers/md/dm-table.c
@@ -325,20 +325,13 @@ static int open_dev(struct dm_dev_internal *d, dev_t dev,
BUG_ON(d->dm_dev.bdev);
- bdev = open_by_devnum(dev, d->dm_dev.mode);
+ bdev = open_by_devnum(dev, d->dm_dev.mode | FMODE_EXCL, _claim_ptr);
if (IS_ERR(bdev))
return PTR_ERR(bdev);
- r = bd_claim(bdev, _claim_ptr);
- if (r) {
- blkdev_put(bdev, d->dm_dev.mode);
- return r;
- }
-
r = bd_link_disk_holder(bdev, dm_disk(md));
if (r) {
- bd_release(bdev);
- blkdev_put(bdev, d->dm_dev.mode);
+ blkdev_put(bdev, d->dm_dev.mode | FMODE_EXCL);
return r;
}
@@ -354,9 +347,7 @@ static void close_dev(struct dm_dev_internal *d, struct mapped_device *md)
if (!d->dm_dev.bdev)
return;
- bd_unlink_disk_holder(d->dm_dev.bdev);
- bd_release(d->dm_dev.bdev);
- blkdev_put(d->dm_dev.bdev, d->dm_dev.mode);
+ blkdev_put(d->dm_dev.bdev, d->dm_dev.mode | FMODE_EXCL);
d->dm_dev.bdev = NULL;
}
diff --git a/drivers/md/md.c b/drivers/md/md.c
index c47644fca1a1..6af951ffe0bb 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -1907,7 +1907,6 @@ static void unbind_rdev_from_array(mdk_rdev_t * rdev)
MD_BUG();
return;
}
- bd_unlink_disk_holder(rdev->bdev);
list_del_rcu(&rdev->same_set);
printk(KERN_INFO "md: unbind<%s>\n", bdevname(rdev->bdev,b));
rdev->mddev = NULL;
@@ -1935,19 +1934,13 @@ static int lock_rdev(mdk_rdev_t *rdev, dev_t dev, int shared)
struct block_device *bdev;
char b[BDEVNAME_SIZE];
- bdev = open_by_devnum(dev, FMODE_READ|FMODE_WRITE);
+ bdev = open_by_devnum(dev, FMODE_READ|FMODE_WRITE|FMODE_EXCL,
+ shared ? (mdk_rdev_t *)lock_rdev : rdev);
if (IS_ERR(bdev)) {
printk(KERN_ERR "md: could not open %s.\n",
__bdevname(dev, b));
return PTR_ERR(bdev);
}
- err = bd_claim(bdev, shared ? (mdk_rdev_t *)lock_rdev : rdev);
- if (err) {
- printk(KERN_ERR "md: could not bd_claim %s.\n",
- bdevname(bdev, b));
- blkdev_put(bdev, FMODE_READ|FMODE_WRITE);
- return err;
- }
if (!shared)
set_bit(AllReserved, &rdev->flags);
rdev->bdev = bdev;
@@ -1960,8 +1953,7 @@ static void unlock_rdev(mdk_rdev_t *rdev)
rdev->bdev = NULL;
if (!bdev)
MD_BUG();
- bd_release(bdev);
- blkdev_put(bdev, FMODE_READ|FMODE_WRITE);
+ blkdev_put(bdev, FMODE_READ|FMODE_WRITE|FMODE_EXCL);
}
void md_autodetect_dev(dev_t dev);
diff --git a/drivers/mtd/devices/block2mtd.c b/drivers/mtd/devices/block2mtd.c
index a9e2d3b38aeb..aa557beb8f51 100644
--- a/drivers/mtd/devices/block2mtd.c
+++ b/drivers/mtd/devices/block2mtd.c
@@ -224,7 +224,7 @@ static void block2mtd_free_device(struct block2mtd_dev *dev)
if (dev->blkdev) {
invalidate_mapping_pages(dev->blkdev->bd_inode->i_mapping,
0, -1);
- close_bdev_exclusive(dev->blkdev, FMODE_READ|FMODE_WRITE);
+ blkdev_put(dev->blkdev, FMODE_READ|FMODE_WRITE|FMODE_EXCL);
}
kfree(dev);
@@ -234,7 +234,7 @@ static void block2mtd_free_device(struct block2mtd_dev *dev)
/* FIXME: ensure that mtd->size % erase_size == 0 */
static struct block2mtd_dev *add_device(char *devname, int erase_size)
{
- const fmode_t mode = FMODE_READ | FMODE_WRITE;
+ const fmode_t mode = FMODE_READ | FMODE_WRITE | FMODE_EXCL;
struct block_device *bdev;
struct block2mtd_dev *dev;
char *name;
@@ -255,17 +255,8 @@ static struct block2mtd_dev *add_device(char *devname, int erase_size)
to resolve the device name by other means. */
dev_t devt = name_to_dev_t(devname);
- if (devt) {
- bdev = open_by_devnum(devt, mode);
- if (!IS_ERR(bdev)) {
- int ret;
- ret = bd_claim(bdev, dev);
- if (ret) {
- blkdev_put(bdev, mode);
- bdev = ERR_PTR(ret);
- }
- }
- }
+ if (devt)
+ bdev = open_by_devnum(devt, mode, dev);
}
#endif
diff --git a/drivers/s390/block/dasd_genhd.c b/drivers/s390/block/dasd_genhd.c
index 30a1ca3d08b7..5505bc07e1e7 100644
--- a/drivers/s390/block/dasd_genhd.c
+++ b/drivers/s390/block/dasd_genhd.c
@@ -103,7 +103,7 @@ int dasd_scan_partitions(struct dasd_block *block)
struct block_device *bdev;
bdev = bdget_disk(block->gdp, 0);
- if (!bdev || blkdev_get(bdev, FMODE_READ) < 0)
+ if (!bdev || blkdev_get(bdev, FMODE_READ, NULL) < 0)
return -ENODEV;
/*
* See fs/partition/check.c:register_disk,rescan_partitions