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-rw-r--r--arch/ia64/kernel/dma-mapping.c4
-rw-r--r--arch/ia64/lib/ip_fast_csum.S8
-rw-r--r--arch/powerpc/kernel/power7-pmu.c6
-rw-r--r--arch/sparc/kernel/irq_64.c2
-rw-r--r--arch/sparc/kernel/nmi.c2
-rw-r--r--arch/sparc/prom/misc_64.c2
-rw-r--r--arch/sparc/prom/printf.c7
-rw-r--r--drivers/char/n_tty.c3
-rw-r--r--drivers/char/pty.c10
-rw-r--r--drivers/input/keyboard/atkbd.c35
-rw-r--r--drivers/input/serio/i8042-x86ia64io.h8
-rw-r--r--drivers/md/dm-exception-store.c13
-rw-r--r--drivers/md/dm-exception-store.h4
-rw-r--r--drivers/md/dm-log-userspace-base.c39
-rw-r--r--drivers/md/dm-log-userspace-transfer.c6
-rw-r--r--drivers/md/dm-log-userspace-transfer.h2
-rw-r--r--drivers/md/dm-raid1.c8
-rw-r--r--drivers/md/dm-snap-persistent.c88
-rw-r--r--drivers/md/dm-snap.c23
-rw-r--r--drivers/md/dm-stripe.c13
-rw-r--r--drivers/md/dm-table.c51
-rw-r--r--drivers/md/dm.c15
-rw-r--r--drivers/pci/iov.c23
-rw-r--r--drivers/pci/pci.h13
-rw-r--r--drivers/pci/setup-bus.c4
-rw-r--r--drivers/pci/setup-res.c8
-rw-r--r--fs/compat.c17
-rw-r--r--fs/exec.c63
-rw-r--r--fs/ext2/namei.c4
-rw-r--r--fs/nilfs2/btnode.c2
-rw-r--r--fs/ocfs2/aops.c4
-rw-r--r--fs/ocfs2/dcache.c11
-rw-r--r--fs/xfs/linux-2.6/xfs_ioctl32.c2
-rw-r--r--include/linux/binfmts.h1
-rw-r--r--include/linux/device-mapper.h4
-rw-r--r--include/linux/dm-log-userspace.h13
-rw-r--r--include/linux/workqueue.h15
-rw-r--r--kernel/perf_counter.c3
-rw-r--r--mm/nommu.c3
-rw-r--r--mm/page_alloc.c6
-rw-r--r--mm/percpu.c15
-rw-r--r--mm/slub.c4
42 files changed, 402 insertions, 162 deletions
diff --git a/arch/ia64/kernel/dma-mapping.c b/arch/ia64/kernel/dma-mapping.c
index 39a3cd0a4173..f2c1600da097 100644
--- a/arch/ia64/kernel/dma-mapping.c
+++ b/arch/ia64/kernel/dma-mapping.c
@@ -10,7 +10,9 @@ EXPORT_SYMBOL(dma_ops);
static int __init dma_init(void)
{
- dma_debug_init(PREALLOC_DMA_DEBUG_ENTRIES);
+ dma_debug_init(PREALLOC_DMA_DEBUG_ENTRIES);
+
+ return 0;
}
fs_initcall(dma_init);
diff --git a/arch/ia64/lib/ip_fast_csum.S b/arch/ia64/lib/ip_fast_csum.S
index 1f86aeb2c948..620d9dc5220f 100644
--- a/arch/ia64/lib/ip_fast_csum.S
+++ b/arch/ia64/lib/ip_fast_csum.S
@@ -96,20 +96,22 @@ END(ip_fast_csum)
GLOBAL_ENTRY(csum_ipv6_magic)
ld4 r20=[in0],4
ld4 r21=[in1],4
- dep r15=in3,in2,32,16
+ zxt4 in2=in2
;;
ld4 r22=[in0],4
ld4 r23=[in1],4
- mux1 r15=r15,@rev
+ dep r15=in3,in2,32,16
;;
ld4 r24=[in0],4
ld4 r25=[in1],4
- shr.u r15=r15,16
+ mux1 r15=r15,@rev
add r16=r20,r21
add r17=r22,r23
+ zxt4 in4=in4
;;
ld4 r26=[in0],4
ld4 r27=[in1],4
+ shr.u r15=r15,16
add r18=r24,r25
add r8=r16,r17
;;
diff --git a/arch/powerpc/kernel/power7-pmu.c b/arch/powerpc/kernel/power7-pmu.c
index 388cf57ad827..018d094d92f9 100644
--- a/arch/powerpc/kernel/power7-pmu.c
+++ b/arch/powerpc/kernel/power7-pmu.c
@@ -317,7 +317,7 @@ static int power7_generic_events[] = {
*/
static int power7_cache_events[C(MAX)][C(OP_MAX)][C(RESULT_MAX)] = {
[C(L1D)] = { /* RESULT_ACCESS RESULT_MISS */
- [C(OP_READ)] = { 0x400f0, 0xc880 },
+ [C(OP_READ)] = { 0xc880, 0x400f0 },
[C(OP_WRITE)] = { 0, 0x300f0 },
[C(OP_PREFETCH)] = { 0xd8b8, 0 },
},
@@ -327,8 +327,8 @@ static int power7_cache_events[C(MAX)][C(OP_MAX)][C(RESULT_MAX)] = {
[C(OP_PREFETCH)] = { 0x408a, 0 },
},
[C(LL)] = { /* RESULT_ACCESS RESULT_MISS */
- [C(OP_READ)] = { 0x6080, 0x6084 },
- [C(OP_WRITE)] = { 0x6082, 0x6086 },
+ [C(OP_READ)] = { 0x16080, 0x26080 },
+ [C(OP_WRITE)] = { 0x16082, 0x26082 },
[C(OP_PREFETCH)] = { 0, 0 },
},
[C(DTLB)] = { /* RESULT_ACCESS RESULT_MISS */
diff --git a/arch/sparc/kernel/irq_64.c b/arch/sparc/kernel/irq_64.c
index f0ee79055409..8daab33fc17d 100644
--- a/arch/sparc/kernel/irq_64.c
+++ b/arch/sparc/kernel/irq_64.c
@@ -886,7 +886,7 @@ void notrace init_irqwork_curcpu(void)
* Therefore you cannot make any OBP calls, not even prom_printf,
* from these two routines.
*/
-static void __cpuinit register_one_mondo(unsigned long paddr, unsigned long type, unsigned long qmask)
+static void __cpuinit notrace register_one_mondo(unsigned long paddr, unsigned long type, unsigned long qmask)
{
unsigned long num_entries = (qmask + 1) / 64;
unsigned long status;
diff --git a/arch/sparc/kernel/nmi.c b/arch/sparc/kernel/nmi.c
index 2c0cc72d295b..b75bf502cd42 100644
--- a/arch/sparc/kernel/nmi.c
+++ b/arch/sparc/kernel/nmi.c
@@ -103,7 +103,7 @@ notrace __kprobes void perfctr_irq(int irq, struct pt_regs *regs)
}
if (!touched && __get_cpu_var(last_irq_sum) == sum) {
local_inc(&__get_cpu_var(alert_counter));
- if (local_read(&__get_cpu_var(alert_counter)) == 5 * nmi_hz)
+ if (local_read(&__get_cpu_var(alert_counter)) == 30 * nmi_hz)
die_nmi("BUG: NMI Watchdog detected LOCKUP",
regs, panic_on_timeout);
} else {
diff --git a/arch/sparc/prom/misc_64.c b/arch/sparc/prom/misc_64.c
index eedffb4fec2d..39fc6af21b7c 100644
--- a/arch/sparc/prom/misc_64.c
+++ b/arch/sparc/prom/misc_64.c
@@ -88,7 +88,7 @@ void prom_cmdline(void)
/* Drop into the prom, but completely terminate the program.
* No chance of continuing.
*/
-void prom_halt(void)
+void notrace prom_halt(void)
{
#ifdef CONFIG_SUN_LDOMS
if (ldom_domaining_enabled)
diff --git a/arch/sparc/prom/printf.c b/arch/sparc/prom/printf.c
index 660943ee4c2a..ca869266b9f3 100644
--- a/arch/sparc/prom/printf.c
+++ b/arch/sparc/prom/printf.c
@@ -14,14 +14,14 @@
*/
#include <linux/kernel.h>
+#include <linux/compiler.h>
#include <asm/openprom.h>
#include <asm/oplib.h>
static char ppbuf[1024];
-void
-prom_write(const char *buf, unsigned int n)
+void notrace prom_write(const char *buf, unsigned int n)
{
char ch;
@@ -33,8 +33,7 @@ prom_write(const char *buf, unsigned int n)
}
}
-void
-prom_printf(const char *fmt, ...)
+void notrace prom_printf(const char *fmt, ...)
{
va_list args;
int i;
diff --git a/drivers/char/n_tty.c b/drivers/char/n_tty.c
index 973be2f44195..4e28b35024ec 100644
--- a/drivers/char/n_tty.c
+++ b/drivers/char/n_tty.c
@@ -300,8 +300,7 @@ static int do_output_char(unsigned char c, struct tty_struct *tty, int space)
if (space < 2)
return -1;
tty->canon_column = tty->column = 0;
- tty_put_char(tty, '\r');
- tty_put_char(tty, c);
+ tty->ops->write(tty, "\r\n", 2);
return 2;
}
tty->canon_column = tty->column;
diff --git a/drivers/char/pty.c b/drivers/char/pty.c
index d083c73d784a..b33d6688e910 100644
--- a/drivers/char/pty.c
+++ b/drivers/char/pty.c
@@ -109,21 +109,13 @@ static int pty_space(struct tty_struct *to)
* the other side of the pty/tty pair.
*/
-static int pty_write(struct tty_struct *tty, const unsigned char *buf,
- int count)
+static int pty_write(struct tty_struct *tty, const unsigned char *buf, int c)
{
struct tty_struct *to = tty->link;
- int c;
if (tty->stopped)
return 0;
- /* This isn't locked but our 8K is quite sloppy so no
- big deal */
-
- c = pty_space(to);
- if (c > count)
- c = count;
if (c > 0) {
/* Stuff the data into the input queue of the other end */
c = tty_insert_flip_string(to, buf, c);
diff --git a/drivers/input/keyboard/atkbd.c b/drivers/input/keyboard/atkbd.c
index 95fe0452dae4..6c6a09b1c0fe 100644
--- a/drivers/input/keyboard/atkbd.c
+++ b/drivers/input/keyboard/atkbd.c
@@ -880,6 +880,14 @@ static unsigned int atkbd_hp_zv6100_forced_release_keys[] = {
};
/*
+ * Perform fixup for HP (Compaq) Presario R4000 R4100 R4200 that don't generate
+ * release for their volume buttons
+ */
+static unsigned int atkbd_hp_r4000_forced_release_keys[] = {
+ 0xae, 0xb0, -1U
+};
+
+/*
* Samsung NC10,NC20 with Fn+F? key release not working
*/
static unsigned int atkbd_samsung_forced_release_keys[] = {
@@ -1537,6 +1545,33 @@ static struct dmi_system_id atkbd_dmi_quirk_table[] __initdata = {
.driver_data = atkbd_hp_zv6100_forced_release_keys,
},
{
+ .ident = "HP Presario R4000",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "Presario R4000"),
+ },
+ .callback = atkbd_setup_forced_release,
+ .driver_data = atkbd_hp_r4000_forced_release_keys,
+ },
+ {
+ .ident = "HP Presario R4100",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "Presario R4100"),
+ },
+ .callback = atkbd_setup_forced_release,
+ .driver_data = atkbd_hp_r4000_forced_release_keys,
+ },
+ {
+ .ident = "HP Presario R4200",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "Presario R4200"),
+ },
+ .callback = atkbd_setup_forced_release,
+ .driver_data = atkbd_hp_r4000_forced_release_keys,
+ },
+ {
.ident = "Inventec Symphony",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "INVENTEC"),
diff --git a/drivers/input/serio/i8042-x86ia64io.h b/drivers/input/serio/i8042-x86ia64io.h
index ae04d8a494e5..ccbf23ece8e3 100644
--- a/drivers/input/serio/i8042-x86ia64io.h
+++ b/drivers/input/serio/i8042-x86ia64io.h
@@ -382,6 +382,14 @@ static struct dmi_system_id __initdata i8042_dmi_nomux_table[] = {
DMI_MATCH(DMI_PRODUCT_NAME, "Vostro1510"),
},
},
+ {
+ .ident = "Acer Aspire 5536",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5536"),
+ DMI_MATCH(DMI_PRODUCT_VERSION, "0100"),
+ },
+ },
{ }
};
diff --git a/drivers/md/dm-exception-store.c b/drivers/md/dm-exception-store.c
index 3710ff88fc10..556acff3952f 100644
--- a/drivers/md/dm-exception-store.c
+++ b/drivers/md/dm-exception-store.c
@@ -171,6 +171,14 @@ static int set_chunk_size(struct dm_exception_store *store,
*/
chunk_size_ulong = round_up(chunk_size_ulong, PAGE_SIZE >> 9);
+ return dm_exception_store_set_chunk_size(store, chunk_size_ulong,
+ error);
+}
+
+int dm_exception_store_set_chunk_size(struct dm_exception_store *store,
+ unsigned long chunk_size_ulong,
+ char **error)
+{
/* Check chunk_size is a power of 2 */
if (!is_power_of_2(chunk_size_ulong)) {
*error = "Chunk size is not a power of 2";
@@ -183,6 +191,11 @@ static int set_chunk_size(struct dm_exception_store *store,
return -EINVAL;
}
+ if (chunk_size_ulong > INT_MAX >> SECTOR_SHIFT) {
+ *error = "Chunk size is too high";
+ return -EINVAL;
+ }
+
store->chunk_size = chunk_size_ulong;
store->chunk_mask = chunk_size_ulong - 1;
store->chunk_shift = ffs(chunk_size_ulong) - 1;
diff --git a/drivers/md/dm-exception-store.h b/drivers/md/dm-exception-store.h
index 2442c8c07898..812c71872ba0 100644
--- a/drivers/md/dm-exception-store.h
+++ b/drivers/md/dm-exception-store.h
@@ -168,6 +168,10 @@ static inline chunk_t sector_to_chunk(struct dm_exception_store *store,
int dm_exception_store_type_register(struct dm_exception_store_type *type);
int dm_exception_store_type_unregister(struct dm_exception_store_type *type);
+int dm_exception_store_set_chunk_size(struct dm_exception_store *store,
+ unsigned long chunk_size_ulong,
+ char **error);
+
int dm_exception_store_create(struct dm_target *ti, int argc, char **argv,
unsigned *args_used,
struct dm_exception_store **store);
diff --git a/drivers/md/dm-log-userspace-base.c b/drivers/md/dm-log-userspace-base.c
index e69b96560997..6e186b1a062d 100644
--- a/drivers/md/dm-log-userspace-base.c
+++ b/drivers/md/dm-log-userspace-base.c
@@ -21,6 +21,7 @@ struct log_c {
struct dm_target *ti;
uint32_t region_size;
region_t region_count;
+ uint64_t luid;
char uuid[DM_UUID_LEN];
char *usr_argv_str;
@@ -63,7 +64,7 @@ static int userspace_do_request(struct log_c *lc, const char *uuid,
* restored.
*/
retry:
- r = dm_consult_userspace(uuid, request_type, data,
+ r = dm_consult_userspace(uuid, lc->luid, request_type, data,
data_size, rdata, rdata_size);
if (r != -ESRCH)
@@ -74,14 +75,15 @@ retry:
set_current_state(TASK_INTERRUPTIBLE);
schedule_timeout(2*HZ);
DMWARN("Attempting to contact userspace log server...");
- r = dm_consult_userspace(uuid, DM_ULOG_CTR, lc->usr_argv_str,
+ r = dm_consult_userspace(uuid, lc->luid, DM_ULOG_CTR,
+ lc->usr_argv_str,
strlen(lc->usr_argv_str) + 1,
NULL, NULL);
if (!r)
break;
}
DMINFO("Reconnected to userspace log server... DM_ULOG_CTR complete");
- r = dm_consult_userspace(uuid, DM_ULOG_RESUME, NULL,
+ r = dm_consult_userspace(uuid, lc->luid, DM_ULOG_RESUME, NULL,
0, NULL, NULL);
if (!r)
goto retry;
@@ -111,10 +113,9 @@ static int build_constructor_string(struct dm_target *ti,
return -ENOMEM;
}
- for (i = 0, str_size = 0; i < argc; i++)
- str_size += sprintf(str + str_size, "%s ", argv[i]);
- str_size += sprintf(str + str_size, "%llu",
- (unsigned long long)ti->len);
+ str_size = sprintf(str, "%llu", (unsigned long long)ti->len);
+ for (i = 0; i < argc; i++)
+ str_size += sprintf(str + str_size, " %s", argv[i]);
*ctr_str = str;
return str_size;
@@ -154,6 +155,9 @@ static int userspace_ctr(struct dm_dirty_log *log, struct dm_target *ti,
return -ENOMEM;
}
+ /* The ptr value is sufficient for local unique id */
+ lc->luid = (uint64_t)lc;
+
lc->ti = ti;
if (strlen(argv[0]) > (DM_UUID_LEN - 1)) {
@@ -173,7 +177,7 @@ static int userspace_ctr(struct dm_dirty_log *log, struct dm_target *ti,
}
/* Send table string */
- r = dm_consult_userspace(lc->uuid, DM_ULOG_CTR,
+ r = dm_consult_userspace(lc->uuid, lc->luid, DM_ULOG_CTR,
ctr_str, str_size, NULL, NULL);
if (r == -ESRCH) {
@@ -183,7 +187,7 @@ static int userspace_ctr(struct dm_dirty_log *log, struct dm_target *ti,
/* Since the region size does not change, get it now */
rdata_size = sizeof(rdata);
- r = dm_consult_userspace(lc->uuid, DM_ULOG_GET_REGION_SIZE,
+ r = dm_consult_userspace(lc->uuid, lc->luid, DM_ULOG_GET_REGION_SIZE,
NULL, 0, (char *)&rdata, &rdata_size);
if (r) {
@@ -212,7 +216,7 @@ static void userspace_dtr(struct dm_dirty_log *log)
int r;
struct log_c *lc = log->context;
- r = dm_consult_userspace(lc->uuid, DM_ULOG_DTR,
+ r = dm_consult_userspace(lc->uuid, lc->luid, DM_ULOG_DTR,
NULL, 0,
NULL, NULL);
@@ -227,7 +231,7 @@ static int userspace_presuspend(struct dm_dirty_log *log)
int r;
struct log_c *lc = log->context;
- r = dm_consult_userspace(lc->uuid, DM_ULOG_PRESUSPEND,
+ r = dm_consult_userspace(lc->uuid, lc->luid, DM_ULOG_PRESUSPEND,
NULL, 0,
NULL, NULL);
@@ -239,7 +243,7 @@ static int userspace_postsuspend(struct dm_dirty_log *log)
int r;
struct log_c *lc = log->context;
- r = dm_consult_userspace(lc->uuid, DM_ULOG_POSTSUSPEND,
+ r = dm_consult_userspace(lc->uuid, lc->luid, DM_ULOG_POSTSUSPEND,
NULL, 0,
NULL, NULL);
@@ -252,7 +256,7 @@ static int userspace_resume(struct dm_dirty_log *log)
struct log_c *lc = log->context;
lc->in_sync_hint = 0;
- r = dm_consult_userspace(lc->uuid, DM_ULOG_RESUME,
+ r = dm_consult_userspace(lc->uuid, lc->luid, DM_ULOG_RESUME,
NULL, 0,
NULL, NULL);
@@ -561,6 +565,7 @@ static int userspace_status(struct dm_dirty_log *log, status_type_t status_type,
char *result, unsigned maxlen)
{
int r = 0;
+ char *table_args;
size_t sz = (size_t)maxlen;
struct log_c *lc = log->context;
@@ -577,8 +582,12 @@ static int userspace_status(struct dm_dirty_log *log, status_type_t status_type,
break;
case STATUSTYPE_TABLE:
sz = 0;
- DMEMIT("%s %u %s %s", log->type->name, lc->usr_argc + 1,
- lc->uuid, lc->usr_argv_str);
+ table_args = strstr(lc->usr_argv_str, " ");
+ BUG_ON(!table_args); /* There will always be a ' ' */
+ table_args++;
+
+ DMEMIT("%s %u %s %s ", log->type->name, lc->usr_argc,
+ lc->uuid, table_args);
break;
}
return (r) ? 0 : (int)sz;
diff --git a/drivers/md/dm-log-userspace-transfer.c b/drivers/md/dm-log-userspace-transfer.c
index 8ce74d95ae4d..ba0edad2d048 100644
--- a/drivers/md/dm-log-userspace-transfer.c
+++ b/drivers/md/dm-log-userspace-transfer.c
@@ -147,7 +147,8 @@ static void cn_ulog_callback(void *data)
/**
* dm_consult_userspace
- * @uuid: log's uuid (must be DM_UUID_LEN in size)
+ * @uuid: log's universal unique identifier (must be DM_UUID_LEN in size)
+ * @luid: log's local unique identifier
* @request_type: found in include/linux/dm-log-userspace.h
* @data: data to tx to the server
* @data_size: size of data in bytes
@@ -163,7 +164,7 @@ static void cn_ulog_callback(void *data)
*
* Returns: 0 on success, -EXXX on failure
**/
-int dm_consult_userspace(const char *uuid, int request_type,
+int dm_consult_userspace(const char *uuid, uint64_t luid, int request_type,
char *data, size_t data_size,
char *rdata, size_t *rdata_size)
{
@@ -190,6 +191,7 @@ resend:
memset(tfr, 0, DM_ULOG_PREALLOCED_SIZE - overhead_size);
memcpy(tfr->uuid, uuid, DM_UUID_LEN);
+ tfr->luid = luid;
tfr->seq = dm_ulog_seq++;
/*
diff --git a/drivers/md/dm-log-userspace-transfer.h b/drivers/md/dm-log-userspace-transfer.h
index c26d8e4e2710..04ee874f9153 100644
--- a/drivers/md/dm-log-userspace-transfer.h
+++ b/drivers/md/dm-log-userspace-transfer.h
@@ -11,7 +11,7 @@
int dm_ulog_tfr_init(void);
void dm_ulog_tfr_exit(void);
-int dm_consult_userspace(const char *uuid, int request_type,
+int dm_consult_userspace(const char *uuid, uint64_t luid, int request_type,
char *data, size_t data_size,
char *rdata, size_t *rdata_size);
diff --git a/drivers/md/dm-raid1.c b/drivers/md/dm-raid1.c
index 9726577cde49..33f179e66bf5 100644
--- a/drivers/md/dm-raid1.c
+++ b/drivers/md/dm-raid1.c
@@ -648,7 +648,13 @@ static void do_writes(struct mirror_set *ms, struct bio_list *writes)
*/
dm_rh_inc_pending(ms->rh, &sync);
dm_rh_inc_pending(ms->rh, &nosync);
- ms->log_failure = dm_rh_flush(ms->rh) ? 1 : 0;
+
+ /*
+ * If the flush fails on a previous call and succeeds here,
+ * we must not reset the log_failure variable. We need
+ * userspace interaction to do that.
+ */
+ ms->log_failure = dm_rh_flush(ms->rh) ? 1 : ms->log_failure;
/*
* Dispatch io.
diff --git a/drivers/md/dm-snap-persistent.c b/drivers/md/dm-snap-persistent.c
index 6e3fe4f14934..d5b2e08750d5 100644
--- a/drivers/md/dm-snap-persistent.c
+++ b/drivers/md/dm-snap-persistent.c
@@ -106,6 +106,13 @@ struct pstore {
void *zero_area;
/*
+ * An area used for header. The header can be written
+ * concurrently with metadata (when invalidating the snapshot),
+ * so it needs a separate buffer.
+ */
+ void *header_area;
+
+ /*
* Used to keep track of which metadata area the data in
* 'chunk' refers to.
*/
@@ -148,16 +155,27 @@ static int alloc_area(struct pstore *ps)
*/
ps->area = vmalloc(len);
if (!ps->area)
- return r;
+ goto err_area;
ps->zero_area = vmalloc(len);
- if (!ps->zero_area) {
- vfree(ps->area);
- return r;
- }
+ if (!ps->zero_area)
+ goto err_zero_area;
memset(ps->zero_area, 0, len);
+ ps->header_area = vmalloc(len);
+ if (!ps->header_area)
+ goto err_header_area;
+
return 0;
+
+err_header_area:
+ vfree(ps->zero_area);
+
+err_zero_area:
+ vfree(ps->area);
+
+err_area:
+ return r;
}
static void free_area(struct pstore *ps)
@@ -169,6 +187,10 @@ static void free_area(struct pstore *ps)
if (ps->zero_area)
vfree(ps->zero_area);
ps->zero_area = NULL;
+
+ if (ps->header_area)
+ vfree(ps->header_area);
+ ps->header_area = NULL;
}
struct mdata_req {
@@ -188,7 +210,8 @@ static void do_metadata(struct work_struct *work)
/*
* Read or write a chunk aligned and sized block of data from a device.
*/
-static int chunk_io(struct pstore *ps, chunk_t chunk, int rw, int metadata)
+static int chunk_io(struct pstore *ps, void *area, chunk_t chunk, int rw,
+ int metadata)
{
struct dm_io_region where = {
.bdev = ps->store->cow->bdev,
@@ -198,7 +221,7 @@ static int chunk_io(struct pstore *ps, chunk_t chunk, int rw, int metadata)
struct dm_io_request io_req = {
.bi_rw = rw,
.mem.type = DM_IO_VMA,
- .mem.ptr.vma = ps->area,
+ .mem.ptr.vma = area,
.client = ps->io_client,
.notify.fn = NULL,
};
@@ -240,7 +263,7 @@ static int area_io(struct pstore *ps, int rw)
chunk = area_location(ps, ps->current_area);
- r = chunk_io(ps, chunk, rw, 0);
+ r = chunk_io(ps, ps->area, chunk, rw, 0);
if (r)
return r;
@@ -254,20 +277,7 @@ static void zero_memory_area(struct pstore *ps)
static int zero_disk_area(struct pstore *ps, chunk_t area)
{
- struct dm_io_region where = {
- .bdev = ps->store->cow->bdev,
- .sector = ps->store->chunk_size * area_location(ps, area),
- .count = ps->store->chunk_size,
- };
- struct dm_io_request io_req = {
- .bi_rw = WRITE,
- .mem.type = DM_IO_VMA,
- .mem.ptr.vma = ps->zero_area,
- .client = ps->io_client,
- .notify.fn = NULL,
- };
-
- return dm_io(&io_req, 1, &where, NULL);
+ return chunk_io(ps, ps->zero_area, area_location(ps, area), WRITE, 0);
}
static int read_header(struct pstore *ps, int *new_snapshot)
@@ -276,6 +286,7 @@ static int read_header(struct pstore *ps, int *new_snapshot)
struct disk_header *dh;
chunk_t chunk_size;
int chunk_size_supplied = 1;
+ char *chunk_err;
/*
* Use default chunk size (or hardsect_size, if larger) if none supplied
@@ -297,11 +308,11 @@ static int read_header(struct pstore *ps, int *new_snapshot)
if (r)
return r;
- r = chunk_io(ps, 0, READ, 1);
+ r = chunk_io(ps, ps->header_area, 0, READ, 1);
if (r)
goto bad;
- dh = (struct disk_header *) ps->area;
+ dh = ps->header_area;
if (le32_to_cpu(dh->magic) == 0) {
*new_snapshot = 1;
@@ -319,20 +330,25 @@ static int read_header(struct pstore *ps, int *new_snapshot)
ps->version = le32_to_cpu(dh->version);
chunk_size = le32_to_cpu(dh->chunk_size);
- if (!chunk_size_supplied || ps->store->chunk_size == chunk_size)
+ if (ps->store->chunk_size == chunk_size)
return 0;
- DMWARN("chunk size %llu in device metadata overrides "
- "table chunk size of %llu.",
- (unsigned long long)chunk_size,
- (unsigned long long)ps->store->chunk_size);
+ if (chunk_size_supplied)
+ DMWARN("chunk size %llu in device metadata overrides "
+ "table chunk size of %llu.",
+ (unsigned long long)chunk_size,
+ (unsigned long long)ps->store->chunk_size);
/* We had a bogus chunk_size. Fix stuff up. */
free_area(ps);
- ps->store->chunk_size = chunk_size;
- ps->store->chunk_mask = chunk_size - 1;
- ps->store->chunk_shift = ffs(chunk_size) - 1;
+ r = dm_exception_store_set_chunk_size(ps->store, chunk_size,
+ &chunk_err);
+ if (r) {
+ DMERR("invalid on-disk chunk size %llu: %s.",
+ (unsigned long long)chunk_size, chunk_err);
+ return r;
+ }
r = dm_io_client_resize(sectors_to_pages(ps->store->chunk_size),
ps->io_client);
@@ -351,15 +367,15 @@ static int write_header(struct pstore *ps)
{
struct disk_header *dh;
- memset(ps->area, 0, ps->store->chunk_size << SECTOR_SHIFT);
+ memset(ps->header_area, 0, ps->store->chunk_size << SECTOR_SHIFT);
- dh = (struct disk_header *) ps->area;
+ dh = ps->header_area;
dh->magic = cpu_to_le32(SNAP_MAGIC);
dh->valid = cpu_to_le32(ps->valid);
dh->version = cpu_to_le32(ps->version);
dh->chunk_size = cpu_to_le32(ps->store->chunk_size);
- return chunk_io(ps, 0, WRITE, 1);
+ return chunk_io(ps, ps->header_area, 0, WRITE, 1);
}
/*
@@ -679,6 +695,8 @@ static int persistent_ctr(struct dm_exception_store *store,
ps->valid = 1;
ps->version = SNAPSHOT_DISK_VERSION;
ps->area = NULL;
+ ps->zero_area = NULL;
+ ps->header_area = NULL;
ps->next_free = 2; /* skipping the header and first area */
ps->current_committed = 0;
diff --git a/drivers/md/dm-snap.c b/drivers/md/dm-snap.c
index d573165cd2b7..57f1bf7f3b7a 100644
--- a/drivers/md/dm-snap.c
+++ b/drivers/md/dm-snap.c
@@ -1176,6 +1176,15 @@ static int snapshot_status(struct dm_target *ti, status_type_t type,
return 0;
}
+static int snapshot_iterate_devices(struct dm_target *ti,
+ iterate_devices_callout_fn fn, void *data)
+{
+ struct dm_snapshot *snap = ti->private;
+
+ return fn(ti, snap->origin, 0, ti->len, data);
+}
+
+
/*-----------------------------------------------------------------
* Origin methods
*---------------------------------------------------------------*/
@@ -1410,20 +1419,29 @@ static int origin_status(struct dm_target *ti, status_type_t type, char *result,
return 0;
}
+static int origin_iterate_devices(struct dm_target *ti,
+ iterate_devices_callout_fn fn, void *data)
+{
+ struct dm_dev *dev = ti->private;
+
+ return fn(ti, dev, 0, ti->len, data);
+}
+
static struct target_type origin_target = {
.name = "snapshot-origin",
- .version = {1, 6, 0},
+ .version = {1, 7, 0},
.module = THIS_MODULE,
.ctr = origin_ctr,
.dtr = origin_dtr,
.map = origin_map,
.resume = origin_resume,
.status = origin_status,
+ .iterate_devices = origin_iterate_devices,
};
static struct target_type snapshot_target = {
.name = "snapshot",
- .version = {1, 6, 0},
+ .version = {1, 7, 0},
.module = THIS_MODULE,
.ctr = snapshot_ctr,
.dtr = snapshot_dtr,
@@ -1431,6 +1449,7 @@ static struct target_type snapshot_target = {
.end_io = snapshot_end_io,
.resume = snapshot_resume,
.status = snapshot_status,
+ .iterate_devices = snapshot_iterate_devices,
};
static int __init dm_snapshot_init(void)
diff --git a/drivers/md/dm-stripe.c b/drivers/md/dm-stripe.c
index 4e0e5937e42a..3e563d251733 100644
--- a/drivers/md/dm-stripe.c
+++ b/drivers/md/dm-stripe.c
@@ -329,9 +329,19 @@ static int stripe_iterate_devices(struct dm_target *ti,
return ret;
}
+static void stripe_io_hints(struct dm_target *ti,
+ struct queue_limits *limits)
+{
+ struct stripe_c *sc = ti->private;
+ unsigned chunk_size = (sc->chunk_mask + 1) << 9;
+
+ blk_limits_io_min(limits, chunk_size);
+ limits->io_opt = chunk_size * sc->stripes;
+}
+
static struct target_type stripe_target = {
.name = "striped",
- .version = {1, 2, 0},
+ .version = {1, 3, 0},
.module = THIS_MODULE,
.ctr = stripe_ctr,
.dtr = stripe_dtr,
@@ -339,6 +349,7 @@ static struct target_type stripe_target = {
.end_io = stripe_end_io,
.status = stripe_status,
.iterate_devices = stripe_iterate_devices,
+ .io_hints = stripe_io_hints,
};
int __init dm_stripe_init(void)
diff --git a/drivers/md/dm-table.c b/drivers/md/dm-table.c
index d952b3441913..1a6cb3c7822e 100644
--- a/drivers/md/dm-table.c
+++ b/drivers/md/dm-table.c
@@ -343,10 +343,10 @@ static void close_dev(struct dm_dev_internal *d, struct mapped_device *md)
}
/*
- * If possible, this checks an area of a destination device is valid.
+ * If possible, this checks an area of a destination device is invalid.
*/
-static int device_area_is_valid(struct dm_target *ti, struct dm_dev *dev,
- sector_t start, sector_t len, void *data)
+static int device_area_is_invalid(struct dm_target *ti, struct dm_dev *dev,
+ sector_t start, sector_t len, void *data)
{
struct queue_limits *limits = data;
struct block_device *bdev = dev->bdev;
@@ -357,36 +357,40 @@ static int device_area_is_valid(struct dm_target *ti, struct dm_dev *dev,
char b[BDEVNAME_SIZE];
if (!dev_size)
- return 1;
+ return 0;
if ((start >= dev_size) || (start + len > dev_size)) {
- DMWARN("%s: %s too small for target",
- dm_device_name(ti->table->md), bdevname(bdev, b));
- return 0;
+ DMWARN("%s: %s too small for target: "
+ "start=%llu, len=%llu, dev_size=%llu",
+ dm_device_name(ti->table->md), bdevname(bdev, b),
+ (unsigned long long)start,
+ (unsigned long long)len,
+ (unsigned long long)dev_size);
+ return 1;
}
if (logical_block_size_sectors <= 1)
- return 1;
+ return 0;
if (start & (logical_block_size_sectors - 1)) {
DMWARN("%s: start=%llu not aligned to h/w "
- "logical block size %hu of %s",
+ "logical block size %u of %s",
dm_device_name(ti->table->md),
(unsigned long long)start,
limits->logical_block_size, bdevname(bdev, b));
- return 0;
+ return 1;
}
if (len & (logical_block_size_sectors - 1)) {
DMWARN("%s: len=%llu not aligned to h/w "
- "logical block size %hu of %s",
+ "logical block size %u of %s",
dm_device_name(ti->table->md),
(unsigned long long)len,
limits->logical_block_size, bdevname(bdev, b));
- return 0;
+ return 1;
}
- return 1;
+ return 0;
}
/*
@@ -496,8 +500,15 @@ int dm_set_device_limits(struct dm_target *ti, struct dm_dev *dev,
}
if (blk_stack_limits(limits, &q->limits, start << 9) < 0)
- DMWARN("%s: target device %s is misaligned",
- dm_device_name(ti->table->md), bdevname(bdev, b));
+ DMWARN("%s: target device %s is misaligned: "
+ "physical_block_size=%u, logical_block_size=%u, "
+ "alignment_offset=%u, start=%llu",
+ dm_device_name(ti->table->md), bdevname(bdev, b),
+ q->limits.physical_block_size,
+ q->limits.logical_block_size,
+ q->limits.alignment_offset,
+ (unsigned long long) start << 9);
+
/*
* Check if merge fn is supported.
@@ -698,7 +709,7 @@ static int validate_hardware_logical_block_alignment(struct dm_table *table,
if (remaining) {
DMWARN("%s: table line %u (start sect %llu len %llu) "
- "not aligned to h/w logical block size %hu",
+ "not aligned to h/w logical block size %u",
dm_device_name(table->md), i,
(unsigned long long) ti->begin,
(unsigned long long) ti->len,
@@ -996,12 +1007,16 @@ int dm_calculate_queue_limits(struct dm_table *table,
ti->type->iterate_devices(ti, dm_set_device_limits,
&ti_limits);
+ /* Set I/O hints portion of queue limits */
+ if (ti->type->io_hints)
+ ti->type->io_hints(ti, &ti_limits);
+
/*
* Check each device area is consistent with the target's
* overall queue limits.
*/
- if (!ti->type->iterate_devices(ti, device_area_is_valid,
- &ti_limits))
+ if (ti->type->iterate_devices(ti, device_area_is_invalid,
+ &ti_limits))
return -EINVAL;
combine_limits:
diff --git a/drivers/md/dm.c b/drivers/md/dm.c
index 8a311ea0d441..b4845b14740d 100644
--- a/drivers/md/dm.c
+++ b/drivers/md/dm.c
@@ -738,16 +738,22 @@ static void rq_completed(struct mapped_device *md, int run_queue)
dm_put(md);
}
+static void free_rq_clone(struct request *clone)
+{
+ struct dm_rq_target_io *tio = clone->end_io_data;
+
+ blk_rq_unprep_clone(clone);
+ free_rq_tio(tio);
+}
+
static void dm_unprep_request(struct request *rq)
{
struct request *clone = rq->special;
- struct dm_rq_target_io *tio = clone->end_io_data;
rq->special = NULL;
rq->cmd_flags &= ~REQ_DONTPREP;
- blk_rq_unprep_clone(clone);
- free_rq_tio(tio);
+ free_rq_clone(clone);
}
/*
@@ -825,8 +831,7 @@ static void dm_end_request(struct request *clone, int error)
rq->sense_len = clone->sense_len;
}
- BUG_ON(clone->bio);
- free_rq_tio(tio);
+ free_rq_clone(clone);
blk_end_request_all(rq, error);
diff --git a/drivers/pci/iov.c b/drivers/pci/iov.c
index e3a87210e947..e03fe98f0619 100644
--- a/drivers/pci/iov.c
+++ b/drivers/pci/iov.c
@@ -598,6 +598,29 @@ int pci_iov_resource_bar(struct pci_dev *dev, int resno,
}
/**
+ * pci_sriov_resource_alignment - get resource alignment for VF BAR
+ * @dev: the PCI device
+ * @resno: the resource number
+ *
+ * Returns the alignment of the VF BAR found in the SR-IOV capability.
+ * This is not the same as the resource size which is defined as
+ * the VF BAR size multiplied by the number of VFs. The alignment
+ * is just the VF BAR size.
+ */
+int pci_sriov_resource_alignment(struct pci_dev *dev, int resno)
+{
+ struct resource tmp;
+ enum pci_bar_type type;
+ int reg = pci_iov_resource_bar(dev, resno, &type);
+
+ if (!reg)
+ return 0;
+
+ __pci_read_base(dev, type, &tmp, reg);
+ return resource_alignment(&tmp);
+}
+
+/**
* pci_restore_iov_state - restore the state of the IOV capability
* @dev: the PCI device
*/
diff --git a/drivers/pci/pci.h b/drivers/pci/pci.h
index f73bcbedf37c..5ff4d25bf0e9 100644
--- a/drivers/pci/pci.h
+++ b/drivers/pci/pci.h
@@ -243,6 +243,7 @@ extern int pci_iov_init(struct pci_dev *dev);
extern void pci_iov_release(struct pci_dev *dev);
extern int pci_iov_resource_bar(struct pci_dev *dev, int resno,
enum pci_bar_type *type);
+extern int pci_sriov_resource_alignment(struct pci_dev *dev, int resno);
extern void pci_restore_iov_state(struct pci_dev *dev);
extern int pci_iov_bus_range(struct pci_bus *bus);
@@ -298,4 +299,16 @@ static inline int pci_ats_enabled(struct pci_dev *dev)
}
#endif /* CONFIG_PCI_IOV */
+static inline int pci_resource_alignment(struct pci_dev *dev,
+ struct resource *res)
+{
+#ifdef CONFIG_PCI_IOV
+ int resno = res - dev->resource;
+
+ if (resno >= PCI_IOV_RESOURCES && resno <= PCI_IOV_RESOURCE_END)
+ return pci_sriov_resource_alignment(dev, resno);
+#endif
+ return resource_alignment(res);
+}
+
#endif /* DRIVERS_PCI_H */
diff --git a/drivers/pci/setup-bus.c b/drivers/pci/setup-bus.c
index b636e245445d..7c443b4583ab 100644
--- a/drivers/pci/setup-bus.c
+++ b/drivers/pci/setup-bus.c
@@ -25,7 +25,7 @@
#include <linux/ioport.h>
#include <linux/cache.h>
#include <linux/slab.h>
-
+#include "pci.h"
static void pbus_assign_resources_sorted(const struct pci_bus *bus)
{
@@ -384,7 +384,7 @@ static int pbus_size_mem(struct pci_bus *bus, unsigned long mask, unsigned long
continue;
r_size = resource_size(r);
/* For bridges size != alignment */
- align = resource_alignment(r);
+ align = pci_resource_alignment(dev, r);
order = __ffs(align) - 20;
if (order > 11) {
dev_warn(&dev->dev, "BAR %d bad alignment %llx: "
diff --git a/drivers/pci/setup-res.c b/drivers/pci/setup-res.c
index 1898c7b47907..88cdd1a937d6 100644
--- a/drivers/pci/setup-res.c
+++ b/drivers/pci/setup-res.c
@@ -144,7 +144,7 @@ static int __pci_assign_resource(struct pci_bus *bus, struct pci_dev *dev,
size = resource_size(res);
min = (res->flags & IORESOURCE_IO) ? PCIBIOS_MIN_IO : PCIBIOS_MIN_MEM;
- align = resource_alignment(res);
+ align = pci_resource_alignment(dev, res);
/* First, try exact prefetching match.. */
ret = pci_bus_alloc_resource(bus, res, size, align, min,
@@ -178,7 +178,7 @@ int pci_assign_resource(struct pci_dev *dev, int resno)
struct pci_bus *bus;
int ret;
- align = resource_alignment(res);
+ align = pci_resource_alignment(dev, res);
if (!align) {
dev_info(&dev->dev, "BAR %d: can't allocate resource (bogus "
"alignment) %pR flags %#lx\n",
@@ -259,7 +259,7 @@ void pdev_sort_resources(struct pci_dev *dev, struct resource_list *head)
if (!(r->flags) || r->parent)
continue;
- r_align = resource_alignment(r);
+ r_align = pci_resource_alignment(dev, r);
if (!r_align) {
dev_warn(&dev->dev, "BAR %d: bogus alignment "
"%pR flags %#lx\n",
@@ -271,7 +271,7 @@ void pdev_sort_resources(struct pci_dev *dev, struct resource_list *head)
struct resource_list *ln = list->next;
if (ln)
- align = resource_alignment(ln->res);
+ align = pci_resource_alignment(ln->dev, ln->res);
if (r_align > align) {
tmp = kmalloc(sizeof(*tmp), GFP_KERNEL);
diff --git a/fs/compat.c b/fs/compat.c
index 94502dab972a..6d6f98fe64a0 100644
--- a/fs/compat.c
+++ b/fs/compat.c
@@ -1485,20 +1485,15 @@ int compat_do_execve(char * filename,
if (!bprm)
goto out_files;
- retval = -ERESTARTNOINTR;
- if (mutex_lock_interruptible(&current->cred_guard_mutex))
+ retval = prepare_bprm_creds(bprm);
+ if (retval)
goto out_free;
- current->in_execve = 1;
-
- retval = -ENOMEM;
- bprm->cred = prepare_exec_creds();
- if (!bprm->cred)
- goto out_unlock;
retval = check_unsafe_exec(bprm);
if (retval < 0)
- goto out_unlock;
+ goto out_free;
clear_in_exec = retval;
+ current->in_execve = 1;
file = open_exec(filename);
retval = PTR_ERR(file);
@@ -1547,7 +1542,6 @@ int compat_do_execve(char * filename,
/* execve succeeded */
current->fs->in_exec = 0;
current->in_execve = 0;
- mutex_unlock(&current->cred_guard_mutex);
acct_update_integrals(current);
free_bprm(bprm);
if (displaced)
@@ -1567,10 +1561,7 @@ out_file:
out_unmark:
if (clear_in_exec)
current->fs->in_exec = 0;
-
-out_unlock:
current->in_execve = 0;
- mutex_unlock(&current->cred_guard_mutex);
out_free:
free_bprm(bprm);
diff --git a/fs/exec.c b/fs/exec.c
index fb4f3cdda78c..172ceb6edde4 100644
--- a/fs/exec.c
+++ b/fs/exec.c
@@ -1016,6 +1016,35 @@ out:
EXPORT_SYMBOL(flush_old_exec);
/*
+ * Prepare credentials and lock ->cred_guard_mutex.
+ * install_exec_creds() commits the new creds and drops the lock.
+ * Or, if exec fails before, free_bprm() should release ->cred and
+ * and unlock.
+ */
+int prepare_bprm_creds(struct linux_binprm *bprm)
+{
+ if (mutex_lock_interruptible(&current->cred_guard_mutex))
+ return -ERESTARTNOINTR;
+
+ bprm->cred = prepare_exec_creds();
+ if (likely(bprm->cred))
+ return 0;
+
+ mutex_unlock(&current->cred_guard_mutex);
+ return -ENOMEM;
+}
+
+void free_bprm(struct linux_binprm *bprm)
+{
+ free_arg_pages(bprm);
+ if (bprm->cred) {
+ mutex_unlock(&current->cred_guard_mutex);
+ abort_creds(bprm->cred);
+ }
+ kfree(bprm);
+}
+
+/*
* install the new credentials for this executable
*/
void install_exec_creds(struct linux_binprm *bprm)
@@ -1024,12 +1053,13 @@ void install_exec_creds(struct linux_binprm *bprm)
commit_creds(bprm->cred);
bprm->cred = NULL;
-
- /* cred_guard_mutex must be held at least to this point to prevent
+ /*
+ * cred_guard_mutex must be held at least to this point to prevent
* ptrace_attach() from altering our determination of the task's
- * credentials; any time after this it may be unlocked */
-
+ * credentials; any time after this it may be unlocked.
+ */
security_bprm_committed_creds(bprm);
+ mutex_unlock(&current->cred_guard_mutex);
}
EXPORT_SYMBOL(install_exec_creds);
@@ -1246,14 +1276,6 @@ int search_binary_handler(struct linux_binprm *bprm,struct pt_regs *regs)
EXPORT_SYMBOL(search_binary_handler);
-void free_bprm(struct linux_binprm *bprm)
-{
- free_arg_pages(bprm);
- if (bprm->cred)
- abort_creds(bprm->cred);
- kfree(bprm);
-}
-
/*
* sys_execve() executes a new program.
*/
@@ -1277,20 +1299,15 @@ int do_execve(char * filename,
if (!bprm)
goto out_files;
- retval = -ERESTARTNOINTR;
- if (mutex_lock_interruptible(&current->cred_guard_mutex))
+ retval = prepare_bprm_creds(bprm);
+ if (retval)
goto out_free;
- current->in_execve = 1;
-
- retval = -ENOMEM;
- bprm->cred = prepare_exec_creds();
- if (!bprm->cred)
- goto out_unlock;
retval = check_unsafe_exec(bprm);
if (retval < 0)
- goto out_unlock;
+ goto out_free;
clear_in_exec = retval;
+ current->in_execve = 1;
file = open_exec(filename);
retval = PTR_ERR(file);
@@ -1340,7 +1357,6 @@ int do_execve(char * filename,
/* execve succeeded */
current->fs->in_exec = 0;
current->in_execve = 0;
- mutex_unlock(&current->cred_guard_mutex);
acct_update_integrals(current);
free_bprm(bprm);
if (displaced)
@@ -1360,10 +1376,7 @@ out_file:
out_unmark:
if (clear_in_exec)
current->fs->in_exec = 0;
-
-out_unlock:
current->in_execve = 0;
- mutex_unlock(&current->cred_guard_mutex);
out_free:
free_bprm(bprm);
diff --git a/fs/ext2/namei.c b/fs/ext2/namei.c
index e1dedb0f7873..78d9b925fc94 100644
--- a/fs/ext2/namei.c
+++ b/fs/ext2/namei.c
@@ -362,6 +362,10 @@ static int ext2_rename (struct inode * old_dir, struct dentry * old_dentry,
if (dir_de) {
if (old_dir != new_dir)
ext2_set_link(old_inode, dir_de, dir_page, new_dir, 0);
+ else {
+ kunmap(dir_page);
+ page_cache_release(dir_page);
+ }
inode_dec_link_count(old_dir);
}
return 0;
diff --git a/fs/nilfs2/btnode.c b/fs/nilfs2/btnode.c
index 7e0b61be212e..c668bca579c1 100644
--- a/fs/nilfs2/btnode.c
+++ b/fs/nilfs2/btnode.c
@@ -209,6 +209,7 @@ int nilfs_btnode_prepare_change_key(struct address_space *btnc,
* We cannot call radix_tree_preload for the kernels older
* than 2.6.23, because it is not exported for modules.
*/
+retry:
err = radix_tree_preload(GFP_NOFS & ~__GFP_HIGHMEM);
if (err)
goto failed_unlock;
@@ -219,7 +220,6 @@ int nilfs_btnode_prepare_change_key(struct address_space *btnc,
(unsigned long long)oldkey,
(unsigned long long)newkey);
-retry:
spin_lock_irq(&btnc->tree_lock);
err = radix_tree_insert(&btnc->page_tree, newkey, obh->b_page);
spin_unlock_irq(&btnc->tree_lock);
diff --git a/fs/ocfs2/aops.c b/fs/ocfs2/aops.c
index b401654011a2..8a1e61545f41 100644
--- a/fs/ocfs2/aops.c
+++ b/fs/ocfs2/aops.c
@@ -1747,8 +1747,8 @@ int ocfs2_write_begin_nolock(struct address_space *mapping,
* we know zeros will only be needed in the first and/or last cluster.
*/
if (clusters_to_alloc || extents_to_split ||
- wc->w_desc[0].c_needs_zero ||
- wc->w_desc[wc->w_clen - 1].c_needs_zero)
+ (wc->w_clen && (wc->w_desc[0].c_needs_zero ||
+ wc->w_desc[wc->w_clen - 1].c_needs_zero)))
cluster_of_pages = 1;
else
cluster_of_pages = 0;
diff --git a/fs/ocfs2/dcache.c b/fs/ocfs2/dcache.c
index 2f28b7de2c8d..b4957c7d9fe2 100644
--- a/fs/ocfs2/dcache.c
+++ b/fs/ocfs2/dcache.c
@@ -85,6 +85,17 @@ static int ocfs2_dentry_revalidate(struct dentry *dentry,
goto bail;
}
+ /*
+ * If the last lookup failed to create dentry lock, let us
+ * redo it.
+ */
+ if (!dentry->d_fsdata) {
+ mlog(0, "Inode %llu doesn't have dentry lock, "
+ "returning false\n",
+ (unsigned long long)OCFS2_I(inode)->ip_blkno);
+ goto bail;
+ }
+
ret = 1;
bail:
diff --git a/fs/xfs/linux-2.6/xfs_ioctl32.c b/fs/xfs/linux-2.6/xfs_ioctl32.c
index 0882d166239a..eafcc7c18706 100644
--- a/fs/xfs/linux-2.6/xfs_ioctl32.c
+++ b/fs/xfs/linux-2.6/xfs_ioctl32.c
@@ -619,7 +619,7 @@ xfs_file_compat_ioctl(
case XFS_IOC_GETVERSION_32:
cmd = _NATIVE_IOC(cmd, long);
return xfs_file_ioctl(filp, cmd, p);
- case XFS_IOC_SWAPEXT: {
+ case XFS_IOC_SWAPEXT_32: {
struct xfs_swapext sxp;
struct compat_xfs_swapext __user *sxu = arg;
diff --git a/include/linux/binfmts.h b/include/linux/binfmts.h
index 61ee18c1bdb4..2046b5b8af48 100644
--- a/include/linux/binfmts.h
+++ b/include/linux/binfmts.h
@@ -117,6 +117,7 @@ extern int setup_arg_pages(struct linux_binprm * bprm,
int executable_stack);
extern int bprm_mm_init(struct linux_binprm *bprm);
extern int copy_strings_kernel(int argc,char ** argv,struct linux_binprm *bprm);
+extern int prepare_bprm_creds(struct linux_binprm *bprm);
extern void install_exec_creds(struct linux_binprm *bprm);
extern void do_coredump(long signr, int exit_code, struct pt_regs *regs);
extern int set_binfmt(struct linux_binfmt *new);
diff --git a/include/linux/device-mapper.h b/include/linux/device-mapper.h
index 655e7721580a..df7607e6dce8 100644
--- a/include/linux/device-mapper.h
+++ b/include/linux/device-mapper.h
@@ -91,6 +91,9 @@ typedef int (*dm_iterate_devices_fn) (struct dm_target *ti,
iterate_devices_callout_fn fn,
void *data);
+typedef void (*dm_io_hints_fn) (struct dm_target *ti,
+ struct queue_limits *limits);
+
/*
* Returns:
* 0: The target can handle the next I/O immediately.
@@ -151,6 +154,7 @@ struct target_type {
dm_merge_fn merge;
dm_busy_fn busy;
dm_iterate_devices_fn iterate_devices;
+ dm_io_hints_fn io_hints;
/* For internal device-mapper use. */
struct list_head list;
diff --git a/include/linux/dm-log-userspace.h b/include/linux/dm-log-userspace.h
index 642e3017b51f..8a1f972c0fe9 100644
--- a/include/linux/dm-log-userspace.h
+++ b/include/linux/dm-log-userspace.h
@@ -371,7 +371,18 @@
(DM_ULOG_REQUEST_MASK & (request_type))
struct dm_ulog_request {
- char uuid[DM_UUID_LEN]; /* Ties a request to a specific mirror log */
+ /*
+ * The local unique identifier (luid) and the universally unique
+ * identifier (uuid) are used to tie a request to a specific
+ * mirror log. A single machine log could probably make due with
+ * just the 'luid', but a cluster-aware log must use the 'uuid' and
+ * the 'luid'. The uuid is what is required for node to node
+ * communication concerning a particular log, but the 'luid' helps
+ * differentiate between logs that are being swapped and have the
+ * same 'uuid'. (Think "live" and "inactive" device-mapper tables.)
+ */
+ uint64_t luid;
+ char uuid[DM_UUID_LEN];
char padding[7]; /* Padding because DM_UUID_LEN = 129 */
int32_t error; /* Used to report back processing errors */
diff --git a/include/linux/workqueue.h b/include/linux/workqueue.h
index 13e1adf55c4c..6273fa97b527 100644
--- a/include/linux/workqueue.h
+++ b/include/linux/workqueue.h
@@ -240,6 +240,21 @@ static inline int cancel_delayed_work(struct delayed_work *work)
return ret;
}
+/*
+ * Like above, but uses del_timer() instead of del_timer_sync(). This means,
+ * if it returns 0 the timer function may be running and the queueing is in
+ * progress.
+ */
+static inline int __cancel_delayed_work(struct delayed_work *work)
+{
+ int ret;
+
+ ret = del_timer(&work->timer);
+ if (ret)
+ work_clear_pending(&work->work);
+ return ret;
+}
+
extern int cancel_delayed_work_sync(struct delayed_work *work);
/* Obsolete. use cancel_delayed_work_sync() */
diff --git a/kernel/perf_counter.c b/kernel/perf_counter.c
index f274e1959885..d7cbc579fc80 100644
--- a/kernel/perf_counter.c
+++ b/kernel/perf_counter.c
@@ -50,7 +50,7 @@ static atomic_t nr_task_counters __read_mostly;
* 1 - disallow cpu counters to unpriv
* 2 - disallow kernel profiling to unpriv
*/
-int sysctl_perf_counter_paranoid __read_mostly;
+int sysctl_perf_counter_paranoid __read_mostly = 1;
static inline bool perf_paranoid_cpu(void)
{
@@ -4066,6 +4066,7 @@ perf_counter_alloc(struct perf_counter_attr *attr,
hwc->sample_period = attr->sample_period;
if (attr->freq && attr->sample_freq)
hwc->sample_period = 1;
+ hwc->last_period = hwc->sample_period;
atomic64_set(&hwc->period_left, hwc->sample_period);
diff --git a/mm/nommu.c b/mm/nommu.c
index 4bde489ec431..66e81e7e9fe9 100644
--- a/mm/nommu.c
+++ b/mm/nommu.c
@@ -1352,6 +1352,7 @@ unsigned long do_mmap_pgoff(struct file *file,
}
vma->vm_region = region;
+ add_nommu_region(region);
/* set up the mapping */
if (file && vma->vm_flags & VM_SHARED)
@@ -1361,8 +1362,6 @@ unsigned long do_mmap_pgoff(struct file *file,
if (ret < 0)
goto error_put_region;
- add_nommu_region(region);
-
/* okay... we have a mapping; now we have to register it */
result = vma->vm_start;
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 5cc986eb9f6f..a0de15f46987 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -817,13 +817,15 @@ __rmqueue_fallback(struct zone *zone, int order, int start_migratetype)
* agressive about taking ownership of free pages
*/
if (unlikely(current_order >= (pageblock_order >> 1)) ||
- start_migratetype == MIGRATE_RECLAIMABLE) {
+ start_migratetype == MIGRATE_RECLAIMABLE ||
+ page_group_by_mobility_disabled) {
unsigned long pages;
pages = move_freepages_block(zone, page,
start_migratetype);
/* Claim the whole block if over half of it is free */
- if (pages >= (1 << (pageblock_order-1)))
+ if (pages >= (1 << (pageblock_order-1)) ||
+ page_group_by_mobility_disabled)
set_pageblock_migratetype(page,
start_migratetype);
diff --git a/mm/percpu.c b/mm/percpu.c
index 5fe37842e0ea..3311c8919f37 100644
--- a/mm/percpu.c
+++ b/mm/percpu.c
@@ -197,7 +197,12 @@ static unsigned long pcpu_chunk_addr(struct pcpu_chunk *chunk,
static bool pcpu_chunk_page_occupied(struct pcpu_chunk *chunk,
int page_idx)
{
- return *pcpu_chunk_pagep(chunk, 0, page_idx) != NULL;
+ /*
+ * Any possible cpu id can be used here, so there's no need to
+ * worry about preemption or cpu hotplug.
+ */
+ return *pcpu_chunk_pagep(chunk, raw_smp_processor_id(),
+ page_idx) != NULL;
}
/* set the pointer to a chunk in a page struct */
@@ -297,6 +302,14 @@ static struct pcpu_chunk *pcpu_chunk_addr_search(void *addr)
return pcpu_first_chunk;
}
+ /*
+ * The address is relative to unit0 which might be unused and
+ * thus unmapped. Offset the address to the unit space of the
+ * current processor before looking it up in the vmalloc
+ * space. Note that any possible cpu id can be used here, so
+ * there's no need to worry about preemption or cpu hotplug.
+ */
+ addr += raw_smp_processor_id() * pcpu_unit_size;
return pcpu_get_page_chunk(vmalloc_to_page(addr));
}
diff --git a/mm/slub.c b/mm/slub.c
index b9f1491a58a1..b6276753626e 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -2594,8 +2594,6 @@ static inline int kmem_cache_close(struct kmem_cache *s)
*/
void kmem_cache_destroy(struct kmem_cache *s)
{
- if (s->flags & SLAB_DESTROY_BY_RCU)
- rcu_barrier();
down_write(&slub_lock);
s->refcount--;
if (!s->refcount) {
@@ -2606,6 +2604,8 @@ void kmem_cache_destroy(struct kmem_cache *s)
"still has objects.\n", s->name, __func__);
dump_stack();
}
+ if (s->flags & SLAB_DESTROY_BY_RCU)
+ rcu_barrier();
sysfs_slab_remove(s);
} else
up_write(&slub_lock);