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-rw-r--r--block/blk-core.c8
-rw-r--r--block/blk-ioc.c3
-rw-r--r--block/blk-timeout.c5
-rw-r--r--block/compat_ioctl.c1
-rw-r--r--block/genhd.c14
-rw-r--r--block/partitions/Kconfig11
-rw-r--r--block/partitions/Makefile1
-rw-r--r--block/partitions/aix.c293
-rw-r--r--block/partitions/aix.h1
-rw-r--r--block/partitions/msdos.c17
10 files changed, 338 insertions, 16 deletions
diff --git a/block/blk-core.c b/block/blk-core.c
index 33c33bc99ddd..93a18d1d3da8 100644
--- a/block/blk-core.c
+++ b/block/blk-core.c
@@ -2315,6 +2315,9 @@ bool blk_update_request(struct request *req, int error, unsigned int nr_bytes)
case -EBADE:
error_type = "critical nexus";
break;
+ case -ETIMEDOUT:
+ error_type = "timeout";
+ break;
case -EIO:
default:
error_type = "I/O";
@@ -3164,7 +3167,7 @@ void blk_post_runtime_resume(struct request_queue *q, int err)
q->rpm_status = RPM_ACTIVE;
__blk_run_queue(q);
pm_runtime_mark_last_busy(q->dev);
- pm_runtime_autosuspend(q->dev);
+ pm_request_autosuspend(q->dev);
} else {
q->rpm_status = RPM_SUSPENDED;
}
@@ -3180,7 +3183,8 @@ int __init blk_dev_init(void)
/* used for unplugging and affects IO latency/throughput - HIGHPRI */
kblockd_workqueue = alloc_workqueue("kblockd",
- WQ_MEM_RECLAIM | WQ_HIGHPRI, 0);
+ WQ_MEM_RECLAIM | WQ_HIGHPRI |
+ WQ_POWER_EFFICIENT, 0);
if (!kblockd_workqueue)
panic("Failed to create kblockd\n");
diff --git a/block/blk-ioc.c b/block/blk-ioc.c
index 9c4bb8266bc8..4464c823cff2 100644
--- a/block/blk-ioc.c
+++ b/block/blk-ioc.c
@@ -144,7 +144,8 @@ void put_io_context(struct io_context *ioc)
if (atomic_long_dec_and_test(&ioc->refcount)) {
spin_lock_irqsave(&ioc->lock, flags);
if (!hlist_empty(&ioc->icq_list))
- schedule_work(&ioc->release_work);
+ queue_work(system_power_efficient_wq,
+ &ioc->release_work);
else
free_ioc = true;
spin_unlock_irqrestore(&ioc->lock, flags);
diff --git a/block/blk-timeout.c b/block/blk-timeout.c
index 6e4744cbfb56..65f103563969 100644
--- a/block/blk-timeout.c
+++ b/block/blk-timeout.c
@@ -82,9 +82,10 @@ void blk_delete_timer(struct request *req)
static void blk_rq_timed_out(struct request *req)
{
struct request_queue *q = req->q;
- enum blk_eh_timer_return ret;
+ enum blk_eh_timer_return ret = BLK_EH_RESET_TIMER;
- ret = q->rq_timed_out_fn(req);
+ if (q->rq_timed_out_fn)
+ ret = q->rq_timed_out_fn(req);
switch (ret) {
case BLK_EH_HANDLED:
__blk_complete_request(req);
diff --git a/block/compat_ioctl.c b/block/compat_ioctl.c
index 7c668c8a6f95..7e5d474dc6ba 100644
--- a/block/compat_ioctl.c
+++ b/block/compat_ioctl.c
@@ -59,6 +59,7 @@ static int compat_hdio_getgeo(struct gendisk *disk, struct block_device *bdev,
if (!disk->fops->getgeo)
return -ENOTTY;
+ memset(&geo, 0, sizeof(geo));
/*
* We need to set the startsect first, the driver may
* want to override it.
diff --git a/block/genhd.c b/block/genhd.c
index 20625eed5511..dadf42b454a3 100644
--- a/block/genhd.c
+++ b/block/genhd.c
@@ -512,7 +512,7 @@ static void register_disk(struct gendisk *disk)
ddev->parent = disk->driverfs_dev;
- dev_set_name(ddev, disk->disk_name);
+ dev_set_name(ddev, "%s", disk->disk_name);
/* delay uevents, until we scanned partition table */
dev_set_uevent_suppress(ddev, 1);
@@ -1489,9 +1489,11 @@ static void __disk_unblock_events(struct gendisk *disk, bool check_now)
intv = disk_events_poll_jiffies(disk);
set_timer_slack(&ev->dwork.timer, intv / 4);
if (check_now)
- queue_delayed_work(system_freezable_wq, &ev->dwork, 0);
+ queue_delayed_work(system_freezable_power_efficient_wq,
+ &ev->dwork, 0);
else if (intv)
- queue_delayed_work(system_freezable_wq, &ev->dwork, intv);
+ queue_delayed_work(system_freezable_power_efficient_wq,
+ &ev->dwork, intv);
out_unlock:
spin_unlock_irqrestore(&ev->lock, flags);
}
@@ -1534,7 +1536,8 @@ void disk_flush_events(struct gendisk *disk, unsigned int mask)
spin_lock_irq(&ev->lock);
ev->clearing |= mask;
if (!ev->block)
- mod_delayed_work(system_freezable_wq, &ev->dwork, 0);
+ mod_delayed_work(system_freezable_power_efficient_wq,
+ &ev->dwork, 0);
spin_unlock_irq(&ev->lock);
}
@@ -1627,7 +1630,8 @@ static void disk_check_events(struct disk_events *ev,
intv = disk_events_poll_jiffies(disk);
if (!ev->block && intv)
- queue_delayed_work(system_freezable_wq, &ev->dwork, intv);
+ queue_delayed_work(system_freezable_power_efficient_wq,
+ &ev->dwork, intv);
spin_unlock_irq(&ev->lock);
diff --git a/block/partitions/Kconfig b/block/partitions/Kconfig
index 75a54e1adbb5..4cebb2f0d2f4 100644
--- a/block/partitions/Kconfig
+++ b/block/partitions/Kconfig
@@ -68,6 +68,17 @@ config ACORN_PARTITION_RISCIX
of machines called RISCiX. If you say 'Y' here, Linux will be able
to read disks partitioned under RISCiX.
+config AIX_PARTITION
+ bool "AIX basic partition table support" if PARTITION_ADVANCED
+ help
+ Say Y here if you would like to be able to read the hard disk
+ partition table format used by IBM or Motorola PowerPC machines
+ running AIX. AIX actually uses a Logical Volume Manager, where
+ "logical volumes" can be spread across one or multiple disks,
+ but this driver works only for the simple case of partitions which
+ are contiguous.
+ Otherwise, say N.
+
config OSF_PARTITION
bool "Alpha OSF partition support" if PARTITION_ADVANCED
default y if ALPHA
diff --git a/block/partitions/Makefile b/block/partitions/Makefile
index 03af8eac51da..2be4d7ba4e3a 100644
--- a/block/partitions/Makefile
+++ b/block/partitions/Makefile
@@ -7,6 +7,7 @@ obj-$(CONFIG_BLOCK) := check.o
obj-$(CONFIG_ACORN_PARTITION) += acorn.o
obj-$(CONFIG_AMIGA_PARTITION) += amiga.o
obj-$(CONFIG_ATARI_PARTITION) += atari.o
+obj-$(CONFIG_AIX_PARTITION) += aix.o
obj-$(CONFIG_MAC_PARTITION) += mac.o
obj-$(CONFIG_LDM_PARTITION) += ldm.o
obj-$(CONFIG_MSDOS_PARTITION) += msdos.o
diff --git a/block/partitions/aix.c b/block/partitions/aix.c
new file mode 100644
index 000000000000..43be471d9b1d
--- /dev/null
+++ b/block/partitions/aix.c
@@ -0,0 +1,293 @@
+/*
+ * fs/partitions/aix.c
+ *
+ * Copyright (C) 2012-2013 Philippe De Muyter <phdm@macqel.be>
+ */
+
+#include "check.h"
+#include "aix.h"
+
+struct lvm_rec {
+ char lvm_id[4]; /* "_LVM" */
+ char reserved4[16];
+ __be32 lvmarea_len;
+ __be32 vgda_len;
+ __be32 vgda_psn[2];
+ char reserved36[10];
+ __be16 pp_size; /* log2(pp_size) */
+ char reserved46[12];
+ __be16 version;
+ };
+
+struct vgda {
+ __be32 secs;
+ __be32 usec;
+ char reserved8[16];
+ __be16 numlvs;
+ __be16 maxlvs;
+ __be16 pp_size;
+ __be16 numpvs;
+ __be16 total_vgdas;
+ __be16 vgda_size;
+ };
+
+struct lvd {
+ __be16 lv_ix;
+ __be16 res2;
+ __be16 res4;
+ __be16 maxsize;
+ __be16 lv_state;
+ __be16 mirror;
+ __be16 mirror_policy;
+ __be16 num_lps;
+ __be16 res10[8];
+ };
+
+struct lvname {
+ char name[64];
+ };
+
+struct ppe {
+ __be16 lv_ix;
+ unsigned short res2;
+ unsigned short res4;
+ __be16 lp_ix;
+ unsigned short res8[12];
+ };
+
+struct pvd {
+ char reserved0[16];
+ __be16 pp_count;
+ char reserved18[2];
+ __be32 psn_part1;
+ char reserved24[8];
+ struct ppe ppe[1016];
+ };
+
+#define LVM_MAXLVS 256
+
+/**
+ * last_lba(): return number of last logical block of device
+ * @bdev: block device
+ *
+ * Description: Returns last LBA value on success, 0 on error.
+ * This is stored (by sd and ide-geometry) in
+ * the part[0] entry for this disk, and is the number of
+ * physical sectors available on the disk.
+ */
+static u64 last_lba(struct block_device *bdev)
+{
+ if (!bdev || !bdev->bd_inode)
+ return 0;
+ return (bdev->bd_inode->i_size >> 9) - 1ULL;
+}
+
+/**
+ * read_lba(): Read bytes from disk, starting at given LBA
+ * @state
+ * @lba
+ * @buffer
+ * @count
+ *
+ * Description: Reads @count bytes from @state->bdev into @buffer.
+ * Returns number of bytes read on success, 0 on error.
+ */
+static size_t read_lba(struct parsed_partitions *state, u64 lba, u8 *buffer,
+ size_t count)
+{
+ size_t totalreadcount = 0;
+
+ if (!buffer || lba + count / 512 > last_lba(state->bdev))
+ return 0;
+
+ while (count) {
+ int copied = 512;
+ Sector sect;
+ unsigned char *data = read_part_sector(state, lba++, &sect);
+ if (!data)
+ break;
+ if (copied > count)
+ copied = count;
+ memcpy(buffer, data, copied);
+ put_dev_sector(sect);
+ buffer += copied;
+ totalreadcount += copied;
+ count -= copied;
+ }
+ return totalreadcount;
+}
+
+/**
+ * alloc_pvd(): reads physical volume descriptor
+ * @state
+ * @lba
+ *
+ * Description: Returns pvd on success, NULL on error.
+ * Allocates space for pvd and fill it with disk blocks at @lba
+ * Notes: remember to free pvd when you're done!
+ */
+static struct pvd *alloc_pvd(struct parsed_partitions *state, u32 lba)
+{
+ size_t count = sizeof(struct pvd);
+ struct pvd *p;
+
+ p = kmalloc(count, GFP_KERNEL);
+ if (!p)
+ return NULL;
+
+ if (read_lba(state, lba, (u8 *) p, count) < count) {
+ kfree(p);
+ return NULL;
+ }
+ return p;
+}
+
+/**
+ * alloc_lvn(): reads logical volume names
+ * @state
+ * @lba
+ *
+ * Description: Returns lvn on success, NULL on error.
+ * Allocates space for lvn and fill it with disk blocks at @lba
+ * Notes: remember to free lvn when you're done!
+ */
+static struct lvname *alloc_lvn(struct parsed_partitions *state, u32 lba)
+{
+ size_t count = sizeof(struct lvname) * LVM_MAXLVS;
+ struct lvname *p;
+
+ p = kmalloc(count, GFP_KERNEL);
+ if (!p)
+ return NULL;
+
+ if (read_lba(state, lba, (u8 *) p, count) < count) {
+ kfree(p);
+ return NULL;
+ }
+ return p;
+}
+
+int aix_partition(struct parsed_partitions *state)
+{
+ int ret = 0;
+ Sector sect;
+ unsigned char *d;
+ u32 pp_bytes_size;
+ u32 pp_blocks_size = 0;
+ u32 vgda_sector = 0;
+ u32 vgda_len = 0;
+ int numlvs = 0;
+ struct pvd *pvd;
+ struct lv_info {
+ unsigned short pps_per_lv;
+ unsigned short pps_found;
+ unsigned char lv_is_contiguous;
+ } *lvip;
+ struct lvname *n = NULL;
+
+ d = read_part_sector(state, 7, &sect);
+ if (d) {
+ struct lvm_rec *p = (struct lvm_rec *)d;
+ u16 lvm_version = be16_to_cpu(p->version);
+ char tmp[64];
+
+ if (lvm_version == 1) {
+ int pp_size_log2 = be16_to_cpu(p->pp_size);
+
+ pp_bytes_size = 1 << pp_size_log2;
+ pp_blocks_size = pp_bytes_size / 512;
+ snprintf(tmp, sizeof(tmp),
+ " AIX LVM header version %u found\n",
+ lvm_version);
+ vgda_len = be32_to_cpu(p->vgda_len);
+ vgda_sector = be32_to_cpu(p->vgda_psn[0]);
+ } else {
+ snprintf(tmp, sizeof(tmp),
+ " unsupported AIX LVM version %d found\n",
+ lvm_version);
+ }
+ strlcat(state->pp_buf, tmp, PAGE_SIZE);
+ put_dev_sector(sect);
+ }
+ if (vgda_sector && (d = read_part_sector(state, vgda_sector, &sect))) {
+ struct vgda *p = (struct vgda *)d;
+
+ numlvs = be16_to_cpu(p->numlvs);
+ put_dev_sector(sect);
+ }
+ lvip = kzalloc(sizeof(struct lv_info) * state->limit, GFP_KERNEL);
+ if (!lvip)
+ return 0;
+ if (numlvs && (d = read_part_sector(state, vgda_sector + 1, &sect))) {
+ struct lvd *p = (struct lvd *)d;
+ int i;
+
+ n = alloc_lvn(state, vgda_sector + vgda_len - 33);
+ if (n) {
+ int foundlvs = 0;
+
+ for (i = 0; foundlvs < numlvs && i < state->limit; i += 1) {
+ lvip[i].pps_per_lv = be16_to_cpu(p[i].num_lps);
+ if (lvip[i].pps_per_lv)
+ foundlvs += 1;
+ }
+ }
+ put_dev_sector(sect);
+ }
+ pvd = alloc_pvd(state, vgda_sector + 17);
+ if (pvd) {
+ int numpps = be16_to_cpu(pvd->pp_count);
+ int psn_part1 = be32_to_cpu(pvd->psn_part1);
+ int i;
+ int cur_lv_ix = -1;
+ int next_lp_ix = 1;
+ int lp_ix;
+
+ for (i = 0; i < numpps; i += 1) {
+ struct ppe *p = pvd->ppe + i;
+ unsigned int lv_ix;
+
+ lp_ix = be16_to_cpu(p->lp_ix);
+ if (!lp_ix) {
+ next_lp_ix = 1;
+ continue;
+ }
+ lv_ix = be16_to_cpu(p->lv_ix) - 1;
+ if (lv_ix > state->limit) {
+ cur_lv_ix = -1;
+ continue;
+ }
+ lvip[lv_ix].pps_found += 1;
+ if (lp_ix == 1) {
+ cur_lv_ix = lv_ix;
+ next_lp_ix = 1;
+ } else if (lv_ix != cur_lv_ix || lp_ix != next_lp_ix) {
+ next_lp_ix = 1;
+ continue;
+ }
+ if (lp_ix == lvip[lv_ix].pps_per_lv) {
+ char tmp[70];
+
+ put_partition(state, lv_ix + 1,
+ (i + 1 - lp_ix) * pp_blocks_size + psn_part1,
+ lvip[lv_ix].pps_per_lv * pp_blocks_size);
+ snprintf(tmp, sizeof(tmp), " <%s>\n",
+ n[lv_ix].name);
+ strlcat(state->pp_buf, tmp, PAGE_SIZE);
+ lvip[lv_ix].lv_is_contiguous = 1;
+ ret = 1;
+ next_lp_ix = 1;
+ } else
+ next_lp_ix += 1;
+ }
+ for (i = 0; i < state->limit; i += 1)
+ if (lvip[i].pps_found && !lvip[i].lv_is_contiguous)
+ pr_warn("partition %s (%u pp's found) is "
+ "not contiguous\n",
+ n[i].name, lvip[i].pps_found);
+ kfree(pvd);
+ }
+ kfree(n);
+ kfree(lvip);
+ return ret;
+}
diff --git a/block/partitions/aix.h b/block/partitions/aix.h
new file mode 100644
index 000000000000..e0c66a987523
--- /dev/null
+++ b/block/partitions/aix.h
@@ -0,0 +1 @@
+extern int aix_partition(struct parsed_partitions *state);
diff --git a/block/partitions/msdos.c b/block/partitions/msdos.c
index 7681cd295ab8..9123f250b425 100644
--- a/block/partitions/msdos.c
+++ b/block/partitions/msdos.c
@@ -23,6 +23,7 @@
#include "check.h"
#include "msdos.h"
#include "efi.h"
+#include "aix.h"
/*
* Many architectures don't like unaligned accesses, while
@@ -90,7 +91,7 @@ static int aix_magic_present(struct parsed_partitions *state, unsigned char *p)
if (d[0] == '_' && d[1] == 'L' && d[2] == 'V' && d[3] == 'M')
ret = 1;
put_dev_sector(sect);
- };
+ }
return ret;
}
@@ -142,7 +143,7 @@ static void parse_extended(struct parsed_partitions *state,
return;
if (!msdos_magic_present(data + 510))
- goto done;
+ goto done;
p = (struct partition *) (data + 0x1be);
@@ -155,7 +156,7 @@ static void parse_extended(struct parsed_partitions *state,
* and OS/2 seems to use all four entries.
*/
- /*
+ /*
* First process the data partition(s)
*/
for (i=0; i<4; i++, p++) {
@@ -263,7 +264,7 @@ static void parse_solaris_x86(struct parsed_partitions *state,
}
#if defined(CONFIG_BSD_DISKLABEL)
-/*
+/*
* Create devices for BSD partitions listed in a disklabel, under a
* dos-like partition. See parse_extended() for more information.
*/
@@ -294,7 +295,7 @@ static void parse_bsd(struct parsed_partitions *state,
if (state->next == state->limit)
break;
- if (p->p_fstype == BSD_FS_UNUSED)
+ if (p->p_fstype == BSD_FS_UNUSED)
continue;
bsd_start = le32_to_cpu(p->p_offset);
bsd_size = le32_to_cpu(p->p_size);
@@ -441,7 +442,7 @@ static struct {
{NEW_SOLARIS_X86_PARTITION, parse_solaris_x86},
{0, NULL},
};
-
+
int msdos_partition(struct parsed_partitions *state)
{
sector_t sector_size = bdev_logical_block_size(state->bdev) / 512;
@@ -462,8 +463,12 @@ int msdos_partition(struct parsed_partitions *state)
*/
if (aix_magic_present(state, data)) {
put_dev_sector(sect);
+#ifdef CONFIG_AIX_PARTITION
+ return aix_partition(state);
+#else
strlcat(state->pp_buf, " [AIX]", PAGE_SIZE);
return 0;
+#endif
}
if (!msdos_magic_present(data + 510)) {