Merge commit 'refs/top-bases/linux-zfs-branch' into linux-zfs-branch
This commit is contained in:
commit
04da8a9177
|
@ -1,24 +0,0 @@
|
|||
dnl #
|
||||
dnl # 2.6.x API change
|
||||
dnl # bio_end_io_t uses 2 args (size was dropped from prototype)
|
||||
dnl #
|
||||
AC_DEFUN([ZFS_AC_CONFIG_KERNEL_BIO_ARGS],
|
||||
[AC_MSG_CHECKING([whether bio_end_io_t wants 2 args])
|
||||
tmp_flags="$EXTRA_KCFLAGS"
|
||||
EXTRA_KCFLAGS="-Werror"
|
||||
ZFS_LINUX_TRY_COMPILE([
|
||||
#include <linux/bio.h>
|
||||
],[
|
||||
void (*wanted_end_io)(struct bio *, int) = NULL;
|
||||
bio_end_io_t *local_end_io;
|
||||
|
||||
local_end_io = wanted_end_io;
|
||||
],[
|
||||
AC_MSG_RESULT(yes)
|
||||
AC_DEFINE(HAVE_2ARGS_BIO_END_IO_T, 1,
|
||||
[bio_end_io_t wants 2 args])
|
||||
],[
|
||||
AC_MSG_RESULT(no)
|
||||
])
|
||||
EXTRA_KCFLAGS="$tmp_flags"
|
||||
])
|
|
@ -0,0 +1,20 @@
|
|||
dnl #
|
||||
dnl # 2.6.24 API change
|
||||
dnl # Empty write barriers are now supported and we should use them.
|
||||
dnl #
|
||||
AC_DEFUN([ZFS_AC_KERNEL_BIO_EMPTY_BARRIER], [
|
||||
AC_MSG_CHECKING([whether bio_empty_barrier() is defined])
|
||||
EXTRA_KCFLAGS="-Werror"
|
||||
ZFS_LINUX_TRY_COMPILE([
|
||||
#include <linux/bio.h>
|
||||
],[
|
||||
struct bio bio;
|
||||
(void)bio_empty_barrier(&bio);
|
||||
],[
|
||||
AC_MSG_RESULT(yes)
|
||||
AC_DEFINE(HAVE_BIO_EMPTY_BARRIER, 1,
|
||||
[bio_empy_barrier() is defined])
|
||||
],[
|
||||
AC_MSG_RESULT(no)
|
||||
])
|
||||
])
|
|
@ -0,0 +1,29 @@
|
|||
dnl #
|
||||
dnl # 2.6.24 API change
|
||||
dnl # Size argument dropped from bio_endio and bi_end_io, because the
|
||||
dnl # bi_end_io is only called once now when the request is complete.
|
||||
dnl # There is no longer any need for a size argument. This also means
|
||||
dnl # that partial IO's are no longer possibe and the end_io callback
|
||||
dnl # should not check bi->bi_size. Finally, the return type was updated
|
||||
dnl # to void.
|
||||
dnl #
|
||||
AC_DEFUN([ZFS_AC_KERNEL_BIO_END_IO_T_ARGS], [
|
||||
AC_MSG_CHECKING([whether bio_end_io_t wants 2 args])
|
||||
tmp_flags="$EXTRA_KCFLAGS"
|
||||
EXTRA_KCFLAGS="-Werror"
|
||||
ZFS_LINUX_TRY_COMPILE([
|
||||
#include <linux/bio.h>
|
||||
],[
|
||||
void (*wanted_end_io)(struct bio *, int) = NULL;
|
||||
bio_end_io_t *local_end_io;
|
||||
|
||||
local_end_io = wanted_end_io;
|
||||
],[
|
||||
AC_MSG_RESULT(yes)
|
||||
AC_DEFINE(HAVE_2ARGS_BIO_END_IO_T, 1,
|
||||
[bio_end_io_t wants 2 args])
|
||||
],[
|
||||
AC_MSG_RESULT(no)
|
||||
])
|
||||
EXTRA_KCFLAGS="$tmp_flags"
|
||||
])
|
|
@ -0,0 +1,18 @@
|
|||
dnl #
|
||||
dnl # 2.6.29 API change
|
||||
dnl # BIO_RW_SYNC renamed to BIO_RW_SYNCIO
|
||||
dnl #
|
||||
AC_DEFUN([ZFS_AC_KERNEL_BIO_RW_SYNCIO], [
|
||||
AC_MSG_CHECKING([whether BIO_RW_SYNCIO is defined])
|
||||
ZFS_LINUX_TRY_COMPILE([
|
||||
#include <linux/bio.h>
|
||||
],[
|
||||
int flags = BIO_RW_SYNCIO;
|
||||
],[
|
||||
AC_MSG_RESULT(yes)
|
||||
AC_DEFINE(HAVE_BIO_RW_SYNCIO, 1,
|
||||
[BIO_RW_SYNCIO is defined])
|
||||
],[
|
||||
AC_MSG_RESULT(no)
|
||||
])
|
||||
])
|
|
@ -0,0 +1,19 @@
|
|||
dnl #
|
||||
dnl # 2.6.22 API change
|
||||
dnl # Unused destroy_dirty_buffers arg removed from prototype.
|
||||
dnl #
|
||||
AC_DEFUN([ZFS_AC_KERNEL_INVALIDATE_BDEV_ARGS], [
|
||||
AC_MSG_CHECKING([whether invalidate_bdev() wants 1 arg])
|
||||
ZFS_LINUX_TRY_COMPILE([
|
||||
#include <linux/buffer_head.h>
|
||||
],[
|
||||
struct block_device *bdev;
|
||||
invalidate_bdev(bdev);
|
||||
],[
|
||||
AC_MSG_RESULT(yes)
|
||||
AC_DEFINE(HAVE_1ARG_INVALIDATE_BDEV, 1,
|
||||
[invalidate_bdev() wants 1 arg])
|
||||
],[
|
||||
AC_MSG_RESULT(no)
|
||||
])
|
||||
])
|
|
@ -0,0 +1,12 @@
|
|||
dnl #
|
||||
dnl # 2.6.28 API change
|
||||
dnl # open/close_bdev_excl() renamed to open/close_bdev_exclusive()
|
||||
dnl #
|
||||
AC_DEFUN([ZFS_AC_KERNEL_OPEN_BDEV_EXCLUSIVE], [
|
||||
ZFS_CHECK_SYMBOL_EXPORT(
|
||||
[open_bdev_exclusive],
|
||||
[fs/block_dev.c],
|
||||
[AC_DEFINE(HAVE_OPEN_BDEV_EXCLUSIVE, 1,
|
||||
[open_bdev_exclusive() is available])],
|
||||
[])
|
||||
])
|
|
@ -4,7 +4,11 @@ dnl #
|
|||
AC_DEFUN([ZFS_AC_CONFIG_KERNEL], [
|
||||
ZFS_AC_KERNEL
|
||||
ZFS_AC_SPL
|
||||
ZFS_AC_CONFIG_KERNEL_BIO_ARGS
|
||||
ZFS_AC_KERNEL_OPEN_BDEV_EXCLUSIVE
|
||||
ZFS_AC_KERNEL_INVALIDATE_BDEV_ARGS
|
||||
ZFS_AC_KERNEL_BIO_END_IO_T_ARGS
|
||||
ZFS_AC_KERNEL_BIO_RW_SYNCIO
|
||||
ZFS_AC_KERNEL_BIO_EMPTY_BARRIER
|
||||
|
||||
dnl # Kernel build make options
|
||||
dnl # KERNELMAKE_PARAMS="V=1" # Enable verbose module build
|
||||
|
|
|
@ -10,15 +10,51 @@ extern "C" {
|
|||
#include <sys/ddi.h>
|
||||
#include <sys/sunldi.h>
|
||||
#include <sys/sunddi.h>
|
||||
#include <zfs_config.h>
|
||||
|
||||
typedef struct vdev_disk {
|
||||
ddi_devid_t vd_devid;
|
||||
char *vd_minor;
|
||||
ldi_handle_t vd_lh;
|
||||
struct block_device *vd_bdev;
|
||||
} vdev_disk_t;
|
||||
|
||||
extern int vdev_disk_physio(ldi_handle_t, caddr_t, size_t, uint64_t, int);
|
||||
extern int vdev_disk_physio(struct block_device *, caddr_t,
|
||||
size_t, uint64_t, int);
|
||||
extern int vdev_disk_read_rootlabel(char *, char *, nvlist_t **);
|
||||
|
||||
/* 2.6.24 API change */
|
||||
#ifdef HAVE_2ARGS_BIO_END_IO_T
|
||||
# define BIO_END_IO_PROTO(fn, x, y, z) static void fn(struct bio *x, int z)
|
||||
# define BIO_END_IO_RETURN(rc) return
|
||||
#else
|
||||
# define BIO_END_IO_PROTO(fn, x, y, z) static int fn(struct bio *x, \
|
||||
unsigned int y, int z)
|
||||
# define BIO_END_IO_RETURN(rc) return rc
|
||||
#endif /* HAVE_2ARGS_BIO_END_IO_T */
|
||||
|
||||
/* 2.6.29 API change */
|
||||
#ifdef HAVE_BIO_RW_SYNCIO
|
||||
# define DIO_RW_SYNCIO BIO_RW_SYNCIO
|
||||
#else
|
||||
# define DIO_RW_SYNCIO BIO_RW_SYNC
|
||||
#endif /* HAVE_BIO_RW_SYNCIO */
|
||||
|
||||
/* 2.6.28 API change */
|
||||
#ifdef HAVE_OPEN_BDEV_EXCLUSIVE
|
||||
# define vdev_bdev_open(path, md, hld) open_bdev_exclusive(path, md, hld)
|
||||
# define vdev_bdev_close(bdev, md) close_bdev_exclusive(bdev, md)
|
||||
#else
|
||||
# define vdev_bdev_open(path, md, hld) open_bdev_excl(path, md, hld)
|
||||
# define vdev_bdev_close(bdev, md) close_bdev_excl(bdev)
|
||||
#endif /* HAVE_OPEN_BDEV_EXCLUSIVE */
|
||||
|
||||
/* 2.6.22 API change */
|
||||
#ifdef HAVE_1ARG_INVALIDATE_BDEV
|
||||
# define vdev_bdev_invalidate(bdev) invalidate_bdev(bdev)
|
||||
#else
|
||||
# define vdev_bdev_invalidate(bdev) invalidate_bdev(bdev, 1)
|
||||
#endif /* HAVE_1ARG_INVALIDATE_BDEV */
|
||||
|
||||
#endif /* _KERNEL */
|
||||
|
||||
#ifdef __cplusplus
|
||||
|
|
|
@ -19,7 +19,7 @@
|
|||
* CDDL HEADER END
|
||||
*/
|
||||
/*
|
||||
* Copyright 2007 Sun Microsystems, Inc. All rights reserved.
|
||||
* Copyright 2009 Sun Microsystems, Inc. All rights reserved.
|
||||
* Use is subject to license terms.
|
||||
*/
|
||||
|
||||
|
@ -30,7 +30,6 @@
|
|||
#include <sys/fs/zfs.h>
|
||||
#include <sys/zio.h>
|
||||
#include <sys/sunldi.h>
|
||||
#include <zfs_config.h>
|
||||
|
||||
/*
|
||||
* Virtual device vector for disks.
|
||||
|
@ -46,58 +45,90 @@ typedef struct dio_request {
|
|||
struct bio *dr_bio[0]; /* Attached bio's */
|
||||
} dio_request_t;
|
||||
|
||||
static int
|
||||
vdev_disk_open(vdev_t *vd, uint64_t *psize, uint64_t *ashift)
|
||||
|
||||
#ifdef HAVE_OPEN_BDEV_EXCLUSIVE
|
||||
static fmode_t
|
||||
vdev_bdev_mode(int smode)
|
||||
{
|
||||
struct block_device *vd_lh;
|
||||
vdev_disk_t *dvd;
|
||||
fmode_t mode = 0;
|
||||
|
||||
ASSERT3S(smode & (FREAD | FWRITE), !=, 0);
|
||||
|
||||
if (smode & FREAD)
|
||||
mode |= FMODE_READ;
|
||||
|
||||
if (smode & FWRITE)
|
||||
mode |= FMODE_WRITE;
|
||||
|
||||
return mode;
|
||||
}
|
||||
#else
|
||||
static int
|
||||
vdev_bdev_mode(int smode)
|
||||
{
|
||||
int mode = 0;
|
||||
|
||||
ASSERT3S(smode & (FREAD | FWRITE), !=, 0);
|
||||
|
||||
if ((smode & FREAD) && !(smode & FWRITE))
|
||||
mode = MS_RDONLY;
|
||||
|
||||
return mode;
|
||||
}
|
||||
#endif /* HAVE_OPEN_BDEV_EXCLUSIVE */
|
||||
|
||||
static int
|
||||
vdev_disk_open(vdev_t *v, uint64_t *psize, uint64_t *ashift)
|
||||
{
|
||||
struct block_device *bdev;
|
||||
vdev_disk_t *vd;
|
||||
int mode;
|
||||
|
||||
/* Must have a pathname and it must be absolute. */
|
||||
if (vd->vdev_path == NULL || vd->vdev_path[0] != '/') {
|
||||
vd->vdev_stat.vs_aux = VDEV_AUX_BAD_LABEL;
|
||||
if (v->vdev_path == NULL || v->vdev_path[0] != '/') {
|
||||
v->vdev_stat.vs_aux = VDEV_AUX_BAD_LABEL;
|
||||
return EINVAL;
|
||||
}
|
||||
|
||||
dvd = kmem_zalloc(sizeof(vdev_disk_t), KM_SLEEP);
|
||||
if (dvd == NULL)
|
||||
vd = kmem_zalloc(sizeof(vdev_disk_t), KM_SLEEP);
|
||||
if (vd == NULL)
|
||||
return ENOMEM;
|
||||
|
||||
/* XXX: Since we do not have devid support like Solaris we
|
||||
/*
|
||||
* XXX: Since we do not have devid support like Solaris we
|
||||
* currently can't be as clever about opening the right device.
|
||||
* For now we will simply open the device name provided and
|
||||
* fail when it doesn't exist. If your devices get reordered
|
||||
* your going to be screwed, use udev for now to prevent this.
|
||||
*
|
||||
* XXX: mode here could be the global spa_mode with a little
|
||||
* munging of the flags to make then more agreeable to linux.
|
||||
* However, simply passing a 0 for now gets us W/R behavior.
|
||||
*/
|
||||
vd_lh = open_bdev_excl(vd->vdev_path, 0, dvd);
|
||||
if (IS_ERR(vd_lh)) {
|
||||
kmem_free(dvd, sizeof(vdev_disk_t));
|
||||
return -PTR_ERR(vd_lh);
|
||||
mode = spa_mode(v->vdev_spa);
|
||||
bdev = vdev_bdev_open(v->vdev_path, vdev_bdev_mode(mode), vd);
|
||||
if (IS_ERR(bdev)) {
|
||||
kmem_free(vd, sizeof(vdev_disk_t));
|
||||
return -PTR_ERR(bdev);
|
||||
}
|
||||
|
||||
/* XXX: Long term validate stored dvd->vd_devid with a unique
|
||||
/*
|
||||
* XXX: Long term validate stored vd->vd_devid with a unique
|
||||
* identifier read from the disk, likely EFI support.
|
||||
*/
|
||||
|
||||
vd->vdev_tsd = dvd;
|
||||
dvd->vd_lh = vd_lh;
|
||||
v->vdev_tsd = vd;
|
||||
vd->vd_bdev = bdev;
|
||||
|
||||
/* Check if this is a whole device. When vd_lh->bd_contains ==
|
||||
* vd_lh we have a whole device and not simply a partition. */
|
||||
vd->vdev_wholedisk = !!(vd_lh->bd_contains == vd_lh);
|
||||
/* Check if this is a whole device. When bdev->bd_contains ==
|
||||
* bdev we have a whole device and not simply a partition. */
|
||||
v->vdev_wholedisk = !!(bdev->bd_contains == bdev);
|
||||
|
||||
/* Clear the nowritecache bit, causes vdev_reopen() to try again. */
|
||||
vd->vdev_nowritecache = B_FALSE;
|
||||
v->vdev_nowritecache = B_FALSE;
|
||||
|
||||
/* Determine the actual size of the device (in bytes)
|
||||
*
|
||||
* XXX: SECTOR_SIZE is defined to 512b which may not be true for
|
||||
* your device, we must use the actual hardware sector size.
|
||||
*/
|
||||
*psize = get_capacity(vd_lh->bd_disk) * SECTOR_SIZE;
|
||||
*psize = get_capacity(bdev->bd_disk) * SECTOR_SIZE;
|
||||
|
||||
/* Based on the minimum sector size set the block size */
|
||||
*ashift = highbit(MAX(SECTOR_SIZE, SPA_MINBLOCKSIZE)) - 1;
|
||||
|
@ -106,27 +137,22 @@ vdev_disk_open(vdev_t *vd, uint64_t *psize, uint64_t *ashift)
|
|||
}
|
||||
|
||||
static void
|
||||
vdev_disk_close(vdev_t *vd)
|
||||
vdev_disk_close(vdev_t *v)
|
||||
{
|
||||
vdev_disk_t *dvd = vd->vdev_tsd;
|
||||
vdev_disk_t *vd = v->vdev_tsd;
|
||||
|
||||
if (dvd == NULL)
|
||||
if (vd == NULL)
|
||||
return;
|
||||
|
||||
if (dvd->vd_lh != NULL)
|
||||
close_bdev_excl(dvd->vd_lh);
|
||||
if (vd->vd_bdev != NULL)
|
||||
vdev_bdev_close(vd->vd_bdev,
|
||||
vdev_bdev_mode(spa_mode(v->vdev_spa)));
|
||||
|
||||
kmem_free(dvd, sizeof(vdev_disk_t));
|
||||
vd->vdev_tsd = NULL;
|
||||
kmem_free(vd, sizeof(vdev_disk_t));
|
||||
v->vdev_tsd = NULL;
|
||||
}
|
||||
|
||||
#ifdef HAVE_2ARGS_BIO_END_IO_T
|
||||
static void
|
||||
vdev_disk_physio_completion(struct bio *bio, int rc)
|
||||
#else
|
||||
static int
|
||||
vdev_disk_physio_completion(struct bio *bio, unsigned int size, int rc)
|
||||
#endif /* HAVE_2ARGS_BIO_END_IO_T */
|
||||
BIO_END_IO_PROTO(vdev_disk_physio_completion, bio, size, rc)
|
||||
{
|
||||
dio_request_t *dr = bio->bi_private;
|
||||
zio_t *zio;
|
||||
|
@ -168,7 +194,7 @@ vdev_disk_physio_completion(struct bio *bio, unsigned int size, int rc)
|
|||
spin_unlock(&dr->dr_lock);
|
||||
|
||||
/* Synchronous dio cleanup handled by waiter */
|
||||
if (dr->dr_rw & (1 << BIO_RW_SYNC)) {
|
||||
if (dr->dr_rw & (1 << DIO_RW_SYNCIO)) {
|
||||
complete(&dr->dr_comp);
|
||||
} else {
|
||||
for (i = 0; i < dr->dr_bio_count; i++)
|
||||
|
@ -186,13 +212,7 @@ vdev_disk_physio_completion(struct bio *bio, unsigned int size, int rc)
|
|||
spin_unlock(&dr->dr_lock);
|
||||
}
|
||||
|
||||
rc = 0;
|
||||
|
||||
#ifdef HAVE_2ARGS_BIO_END_IO_T
|
||||
return;
|
||||
#else
|
||||
return rc;
|
||||
#endif /* HAVE_2ARGS_BIO_END_IO_T */
|
||||
BIO_END_IO_RETURN(0);
|
||||
}
|
||||
|
||||
static struct bio *
|
||||
|
@ -222,7 +242,7 @@ bio_map_virt(struct request_queue *q, void *data,
|
|||
bytes = len;
|
||||
|
||||
VERIFY3P(page = vmalloc_to_page(data), !=, NULL);
|
||||
VERIFY3U(bio_add_pc_page(q, bio, page, bytes, offset), ==, bytes);
|
||||
VERIFY3U(bio_add_pc_page(q, bio, page, bytes, offset),==,bytes);
|
||||
|
||||
data += bytes;
|
||||
len -= bytes;
|
||||
|
@ -250,16 +270,19 @@ bio_map(struct request_queue *q, void *data, unsigned int len, gfp_t gfp_mask)
|
|||
}
|
||||
|
||||
static int
|
||||
__vdev_disk_physio(struct block_device *vd_lh, zio_t *zio, caddr_t kbuf_ptr,
|
||||
__vdev_disk_physio(struct block_device *bdev, zio_t *zio, caddr_t kbuf_ptr,
|
||||
size_t kbuf_size, uint64_t kbuf_offset, int flags)
|
||||
{
|
||||
struct request_queue *q = vd_lh->bd_disk->queue;
|
||||
struct request_queue *q;
|
||||
dio_request_t *dr;
|
||||
caddr_t bio_ptr;
|
||||
uint64_t bio_offset;
|
||||
int i, j, error = 0, bio_count, bio_size, dio_size;
|
||||
|
||||
ASSERT3S(kbuf_offset % SECTOR_SIZE, ==, 0);
|
||||
q = bdev_get_queue(bdev);
|
||||
if (!q)
|
||||
return ENXIO;
|
||||
|
||||
bio_count = (kbuf_size / (q->max_hw_sectors << 9)) + 1;
|
||||
dio_size = sizeof(dio_request_t) + sizeof(struct bio *) * bio_count;
|
||||
|
@ -271,13 +294,10 @@ __vdev_disk_physio(struct block_device *vd_lh, zio_t *zio, caddr_t kbuf_ptr,
|
|||
spin_lock_init(&dr->dr_lock);
|
||||
dr->dr_ref = 0;
|
||||
dr->dr_zio = zio;
|
||||
dr->dr_rw = READ;
|
||||
dr->dr_rw = flags;
|
||||
dr->dr_error = 0;
|
||||
dr->dr_bio_count = bio_count;
|
||||
|
||||
if (flags & (1 << BIO_RW))
|
||||
dr->dr_rw = (flags & (1 << BIO_RW_SYNC)) ? WRITE_SYNC : WRITE;
|
||||
|
||||
#ifdef BIO_RW_FAILFAST
|
||||
if (flags & (1 << BIO_RW_FAILFAST))
|
||||
dr->dr_rw |= 1 << BIO_RW_FAILFAST;
|
||||
|
@ -305,7 +325,7 @@ __vdev_disk_physio(struct block_device *vd_lh, zio_t *zio, caddr_t kbuf_ptr,
|
|||
return error;
|
||||
}
|
||||
|
||||
dr->dr_bio[i]->bi_bdev = vd_lh;
|
||||
dr->dr_bio[i]->bi_bdev = bdev;
|
||||
dr->dr_bio[i]->bi_sector = bio_offset >> 9;
|
||||
dr->dr_bio[i]->bi_end_io = vdev_disk_physio_completion;
|
||||
dr->dr_bio[i]->bi_private = dr;
|
||||
|
@ -320,12 +340,14 @@ __vdev_disk_physio(struct block_device *vd_lh, zio_t *zio, caddr_t kbuf_ptr,
|
|||
submit_bio(dr->dr_rw, dr->dr_bio[i]);
|
||||
|
||||
/*
|
||||
* On syncronous blocking requests we wait for all bio the completion
|
||||
* On synchronous blocking requests we wait for all bio the completion
|
||||
* callbacks to run. We will be woken when the last callback runs
|
||||
* for this dio. We are responsible for freeing the dio_request_t as
|
||||
* well as the final reference on all attached bios.
|
||||
* well as the final reference on all attached bios. Currently, the
|
||||
* only synchronous consumer is vdev_disk_read_rootlabel() all other
|
||||
* IO originating from vdev_disk_io_start() is asynchronous.
|
||||
*/
|
||||
if (dr->dr_rw & (1 << BIO_RW_SYNC)) {
|
||||
if (dr->dr_rw & (1 << DIO_RW_SYNCIO)) {
|
||||
wait_for_completion(&dr->dr_comp);
|
||||
ASSERT(dr->dr_ref == 0);
|
||||
error = dr->dr_error;
|
||||
|
@ -340,87 +362,90 @@ __vdev_disk_physio(struct block_device *vd_lh, zio_t *zio, caddr_t kbuf_ptr,
|
|||
}
|
||||
|
||||
int
|
||||
vdev_disk_physio(ldi_handle_t vd_lh, caddr_t kbuf,
|
||||
vdev_disk_physio(struct block_device *bdev, caddr_t kbuf,
|
||||
size_t size, uint64_t offset, int flags)
|
||||
{
|
||||
return __vdev_disk_physio(vd_lh, NULL, kbuf, size, offset, flags);
|
||||
return __vdev_disk_physio(bdev, NULL, kbuf, size, offset, flags);
|
||||
}
|
||||
|
||||
#if 0
|
||||
/* XXX: Not yet supported */
|
||||
static void
|
||||
vdev_disk_ioctl_done(void *zio_arg, int error)
|
||||
/* 2.6.24 API change */
|
||||
#ifdef HAVE_BIO_EMPTY_BARRIER
|
||||
BIO_END_IO_PROTO(vdev_disk_io_flush_completion, bio, size, rc)
|
||||
{
|
||||
zio_t *zio = zio_arg;
|
||||
zio_t *zio = bio->bi_private;
|
||||
|
||||
zio->io_error = error;
|
||||
zio->io_error = -rc;
|
||||
if (rc && (rc == -EOPNOTSUPP))
|
||||
zio->io_vd->vdev_nowritecache = B_TRUE;
|
||||
|
||||
bio_put(bio);
|
||||
zio_interrupt(zio);
|
||||
|
||||
BIO_END_IO_RETURN(0);
|
||||
}
|
||||
#endif
|
||||
|
||||
static int
|
||||
vdev_disk_io_flush(struct block_device *bdev, zio_t *zio)
|
||||
{
|
||||
struct request_queue *q;
|
||||
struct bio *bio;
|
||||
|
||||
q = bdev_get_queue(bdev);
|
||||
if (!q)
|
||||
return ENXIO;
|
||||
|
||||
bio = bio_alloc(GFP_KERNEL, 0);
|
||||
if (!bio)
|
||||
return ENOMEM;
|
||||
|
||||
bio->bi_end_io = vdev_disk_io_flush_completion;
|
||||
bio->bi_private = zio;
|
||||
bio->bi_bdev = bdev;
|
||||
submit_bio(WRITE_BARRIER, bio);
|
||||
|
||||
return 0;
|
||||
}
|
||||
#else
|
||||
static int
|
||||
vdev_disk_io_flush(struct block_device *bdev, zio_t *zio)
|
||||
{
|
||||
return ENOTSUP;
|
||||
}
|
||||
#endif /* HAVE_BIO_EMPTY_BARRIER */
|
||||
|
||||
static int
|
||||
vdev_disk_io_start(zio_t *zio)
|
||||
{
|
||||
vdev_t *vd = zio->io_vd;
|
||||
vdev_disk_t *dvd = vd->vdev_tsd;
|
||||
vdev_t *v = zio->io_vd;
|
||||
vdev_disk_t *vd = v->vdev_tsd;
|
||||
int flags, error;
|
||||
|
||||
if (zio->io_type == ZIO_TYPE_IOCTL) {
|
||||
switch (zio->io_type) {
|
||||
case ZIO_TYPE_IOCTL:
|
||||
|
||||
/* XXPOLICY */
|
||||
if (!vdev_readable(vd)) {
|
||||
if (!vdev_readable(v)) {
|
||||
zio->io_error = ENXIO;
|
||||
return ZIO_PIPELINE_CONTINUE;
|
||||
}
|
||||
|
||||
switch (zio->io_cmd) {
|
||||
|
||||
case DKIOCFLUSHWRITECACHE:
|
||||
|
||||
if (zfs_nocacheflush)
|
||||
break;
|
||||
|
||||
if (vd->vdev_nowritecache) {
|
||||
if (v->vdev_nowritecache) {
|
||||
zio->io_error = ENOTSUP;
|
||||
break;
|
||||
}
|
||||
|
||||
#if 0
|
||||
/* XXX: Not yet supported */
|
||||
vdev_disk_t *dvd = vd->vdev_tsd;
|
||||
|
||||
zio->io_dk_callback.dkc_callback = vdev_disk_ioctl_done;
|
||||
zio->io_dk_callback.dkc_flag = FLUSH_VOLATILE;
|
||||
zio->io_dk_callback.dkc_cookie = zio;
|
||||
|
||||
error = ldi_ioctl(dvd->vd_lh, zio->io_cmd,
|
||||
(uintptr_t)&zio->io_dk_callback,
|
||||
FKIOCTL, kcred, NULL);
|
||||
|
||||
if (error == 0) {
|
||||
/*
|
||||
* The ioctl will be done asychronously,
|
||||
* and will call vdev_disk_ioctl_done()
|
||||
* upon completion.
|
||||
*/
|
||||
error = vdev_disk_io_flush(vd->vd_bdev, zio);
|
||||
if (error == 0)
|
||||
return ZIO_PIPELINE_STOP;
|
||||
}
|
||||
#else
|
||||
error = ENOTSUP;
|
||||
#endif
|
||||
|
||||
if (error == ENOTSUP || error == ENOTTY) {
|
||||
/*
|
||||
* If we get ENOTSUP or ENOTTY, we know that
|
||||
* no future attempts will ever succeed.
|
||||
* In this case we set a persistent bit so
|
||||
* that we don't bother with the ioctl in the
|
||||
* future.
|
||||
*/
|
||||
vd->vdev_nowritecache = B_TRUE;
|
||||
}
|
||||
zio->io_error = error;
|
||||
if (error == ENOTSUP)
|
||||
v->vdev_nowritecache = B_TRUE;
|
||||
|
||||
break;
|
||||
|
||||
|
@ -429,20 +454,30 @@ vdev_disk_io_start(zio_t *zio)
|
|||
}
|
||||
|
||||
return ZIO_PIPELINE_CONTINUE;
|
||||
|
||||
case ZIO_TYPE_WRITE:
|
||||
flags = WRITE;
|
||||
break;
|
||||
|
||||
case ZIO_TYPE_READ:
|
||||
if (zio->io_flags & ZIO_FLAG_SPECULATIVE)
|
||||
flags = READA;
|
||||
else
|
||||
flags = READ;
|
||||
|
||||
break;
|
||||
|
||||
default:
|
||||
zio->io_error = ENOTSUP;
|
||||
return ZIO_PIPELINE_CONTINUE;
|
||||
}
|
||||
|
||||
/*
|
||||
* B_BUSY XXX: Not supported
|
||||
* B_NOCACHE XXX: Not supported
|
||||
*/
|
||||
flags = ((zio->io_type == ZIO_TYPE_READ) ? READ : WRITE);
|
||||
|
||||
#ifdef BIO_RW_FAILFAST
|
||||
if (zio->io_flags & ZIO_FLAG_IO_RETRY)
|
||||
if (zio->io_flags & (ZIO_FLAG_IO_RETRY | ZIO_FLAG_TRYHARD))
|
||||
flags |= (1 << BIO_RW_FAILFAST);
|
||||
#endif /* BIO_RW_FAILFAST */
|
||||
|
||||
error = __vdev_disk_physio(dvd->vd_lh, zio, zio->io_data,
|
||||
error = __vdev_disk_physio(vd->vd_bdev, zio, zio->io_data,
|
||||
zio->io_size, zio->io_offset, flags);
|
||||
if (error) {
|
||||
zio->io_error = error;
|
||||
|
@ -456,22 +491,20 @@ static void
|
|||
vdev_disk_io_done(zio_t *zio)
|
||||
{
|
||||
/*
|
||||
* If the device returned EIO, then attempt a DKIOCSTATE ioctl to see if
|
||||
* the device has been removed. If this is the case, then we trigger an
|
||||
* asynchronous removal of the device. Otherwise, probe the device and
|
||||
* make sure it's still accessible.
|
||||
* If the device returned EIO, we revalidate the media. If it is
|
||||
* determined the media has changed this triggers the asynchronous
|
||||
* removal of the device from the configuration.
|
||||
*/
|
||||
VERIFY3S(zio->io_error, ==, 0);
|
||||
#if 0
|
||||
vdev_disk_t *dvd = vd->vdev_tsd;
|
||||
int state = DKIO_NONE;
|
||||
if (zio->io_error == EIO) {
|
||||
vdev_t *v = zio->io_vd;
|
||||
vdev_disk_t *vd = v->vdev_tsd;
|
||||
|
||||
if (ldi_ioctl(dvd->vd_lh, DKIOCSTATE, (intptr_t)&state,
|
||||
FKIOCTL, kcred, NULL) == 0 && state != DKIO_INSERTED) {
|
||||
vd->vdev_remove_wanted = B_TRUE;
|
||||
if (check_disk_change(vd->vd_bdev)) {
|
||||
vdev_bdev_invalidate(vd->vd_bdev);
|
||||
v->vdev_remove_wanted = B_TRUE;
|
||||
spa_async_request(zio->io_spa, SPA_ASYNC_REMOVE);
|
||||
}
|
||||
#endif
|
||||
}
|
||||
}
|
||||
|
||||
vdev_ops_t vdev_disk_ops = {
|
||||
|
@ -492,32 +525,18 @@ vdev_ops_t vdev_disk_ops = {
|
|||
int
|
||||
vdev_disk_read_rootlabel(char *devpath, char *devid, nvlist_t **config)
|
||||
{
|
||||
struct block_device *vd_lh;
|
||||
struct block_device *bdev;
|
||||
vdev_label_t *label;
|
||||
uint64_t s, size;
|
||||
int i;
|
||||
|
||||
/*
|
||||
* Read the device label and build the nvlist.
|
||||
* XXX: Not yet supported
|
||||
*/
|
||||
#if 0
|
||||
if (devid != NULL && ddi_devid_str_decode(devid, &tmpdevid,
|
||||
&minor_name) == 0) {
|
||||
error = ldi_open_by_devid(tmpdevid, minor_name, spa_mode,
|
||||
kcred, &vd_lh, zfs_li);
|
||||
ddi_devid_free(tmpdevid);
|
||||
ddi_devid_str_free(minor_name);
|
||||
}
|
||||
#endif
|
||||
bdev = vdev_bdev_open(devpath, vdev_bdev_mode(FREAD), NULL);
|
||||
if (IS_ERR(bdev))
|
||||
return -PTR_ERR(bdev);
|
||||
|
||||
vd_lh = open_bdev_excl(devpath, MS_RDONLY, NULL);
|
||||
if (IS_ERR(vd_lh))
|
||||
return -PTR_ERR(vd_lh);
|
||||
|
||||
s = get_capacity(vd_lh->bd_disk) * SECTOR_SIZE;
|
||||
s = get_capacity(bdev->bd_disk) * SECTOR_SIZE;
|
||||
if (s == 0) {
|
||||
close_bdev_excl(vd_lh);
|
||||
vdev_bdev_close(bdev, vdev_bdev_mode(FREAD));
|
||||
return EIO;
|
||||
}
|
||||
|
||||
|
@ -529,8 +548,8 @@ vdev_disk_read_rootlabel(char *devpath, char *devid, nvlist_t **config)
|
|||
|
||||
/* read vdev label */
|
||||
offset = vdev_label_offset(size, i, 0);
|
||||
if (vdev_disk_physio(vd_lh, (caddr_t)label,
|
||||
VDEV_SKIP_SIZE + VDEV_PHYS_SIZE, offset, READ) != 0)
|
||||
if (vdev_disk_physio(bdev, (caddr_t)label,
|
||||
VDEV_SKIP_SIZE + VDEV_PHYS_SIZE, offset, READ_SYNC) != 0)
|
||||
continue;
|
||||
|
||||
if (nvlist_unpack(label->vl_vdev_phys.vp_nvlist,
|
||||
|
@ -557,7 +576,7 @@ vdev_disk_read_rootlabel(char *devpath, char *devid, nvlist_t **config)
|
|||
}
|
||||
|
||||
vmem_free(label, sizeof(vdev_label_t));
|
||||
close_bdev_excl(vd_lh);
|
||||
vdev_bdev_close(bdev, vdev_bdev_mode(FREAD));
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
|
Loading…
Reference in New Issue