This is a note to let you know that I've just added the patch titled
PCI: keystone: Fix interrupt-controller-node lookup
to the 4.9-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum…
The filename of the patch is:
pci-keystone-fix-interrupt-controller-node-lookup.patch
and it can be found in the queue-4.9 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable(a)vger.kernel.org> know about it.
>From eac56aa3bc8af3d9b9850345d0f2da9d83529134 Mon Sep 17 00:00:00 2001
From: Johan Hovold <johan(a)kernel.org>
Date: Fri, 17 Nov 2017 14:38:31 +0100
Subject: PCI: keystone: Fix interrupt-controller-node lookup
From: Johan Hovold <johan(a)kernel.org>
commit eac56aa3bc8af3d9b9850345d0f2da9d83529134 upstream.
Fix child-node lookup during initialisation which was using the wrong
OF-helper and ended up searching the whole device tree depth-first
starting at the parent rather than just matching on its children.
To make things worse, the parent pci node could end up being prematurely
freed as of_find_node_by_name() drops a reference to its first argument.
Any matching child interrupt-controller node was also leaked.
Fixes: 0c4ffcfe1fbc ("PCI: keystone: Add TI Keystone PCIe driver")
Cc: stable <stable(a)vger.kernel.org> # 3.18
Acked-by: Murali Karicheri <m-karicheri2(a)ti.com>
Signed-off-by: Johan Hovold <johan(a)kernel.org>
[lorenzo.pieralisi(a)arm.com: updated commit subject]
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi(a)arm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org>
---
drivers/pci/host/pci-keystone.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
--- a/drivers/pci/host/pci-keystone.c
+++ b/drivers/pci/host/pci-keystone.c
@@ -181,7 +181,7 @@ static int ks_pcie_get_irq_controller_in
}
/* interrupt controller is in a child node */
- *np_temp = of_find_node_by_name(np_pcie, controller);
+ *np_temp = of_get_child_by_name(np_pcie, controller);
if (!(*np_temp)) {
dev_err(dev, "Node for %s is absent\n", controller);
return -EINVAL;
@@ -190,6 +190,7 @@ static int ks_pcie_get_irq_controller_in
temp = of_irq_count(*np_temp);
if (!temp) {
dev_err(dev, "No IRQ entries in %s\n", controller);
+ of_node_put(*np_temp);
return -EINVAL;
}
@@ -207,6 +208,8 @@ static int ks_pcie_get_irq_controller_in
break;
}
+ of_node_put(*np_temp);
+
if (temp) {
*num_irqs = temp;
return 0;
Patches currently in stable-queue which might be from johan(a)kernel.org are
queue-4.9/pci-keystone-fix-interrupt-controller-node-lookup.patch
queue-4.9/video-fbdev-atmel_lcdfb-fix-display-timings-lookup.patch
This is a note to let you know that I've just added the patch titled
mm: hide a #warning for COMPILE_TEST
to the 4.9-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum…
The filename of the patch is:
mm-hide-a-warning-for-compile_test.patch
and it can be found in the queue-4.9 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable(a)vger.kernel.org> know about it.
>From af27d9403f5b80685b79c88425086edccecaf711 Mon Sep 17 00:00:00 2001
From: Arnd Bergmann <arnd(a)arndb.de>
Date: Fri, 16 Feb 2018 16:25:53 +0100
Subject: mm: hide a #warning for COMPILE_TEST
From: Arnd Bergmann <arnd(a)arndb.de>
commit af27d9403f5b80685b79c88425086edccecaf711 upstream.
We get a warning about some slow configurations in randconfig kernels:
mm/memory.c:83:2: error: #warning Unfortunate NUMA and NUMA Balancing config, growing page-frame for last_cpupid. [-Werror=cpp]
The warning is reasonable by itself, but gets in the way of randconfig
build testing, so I'm hiding it whenever CONFIG_COMPILE_TEST is set.
The warning was added in 2013 in commit 75980e97dacc ("mm: fold
page->_last_nid into page->flags where possible").
Cc: stable(a)vger.kernel.org
Signed-off-by: Arnd Bergmann <arnd(a)arndb.de>
Signed-off-by: Linus Torvalds <torvalds(a)linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org>
---
mm/memory.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -75,7 +75,7 @@
#include "internal.h"
-#ifdef LAST_CPUPID_NOT_IN_PAGE_FLAGS
+#if defined(LAST_CPUPID_NOT_IN_PAGE_FLAGS) && !defined(CONFIG_COMPILE_TEST)
#warning Unfortunate NUMA and NUMA Balancing config, growing page-frame for last_cpupid.
#endif
Patches currently in stable-queue which might be from arnd(a)arndb.de are
queue-4.9/arm-spear600-add-missing-interrupt-parent-of-rtc.patch
queue-4.9/arm-dts-sti-add-gpio-polarity-for-hdmi-hpd-gpio-property.patch
queue-4.9/kselftest-fix-oom-in-memory-compaction-test.patch
queue-4.9/arm-spear13xx-fix-spics-gpio-controller-s-warning.patch
queue-4.9/mm-hide-a-warning-for-compile_test.patch
queue-4.9/arm-lpc3250-fix-uda1380-gpio-numbers.patch
queue-4.9/arm-spear13xx-fix-dmas-cells.patch
queue-4.9/arm-dts-nomadik-add-interrupt-parent-for-clcd.patch
This is a note to let you know that I've just added the patch titled
mm: Fix memory size alignment in devm_memremap_pages_release()
to the 4.9-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum…
The filename of the patch is:
mm-fix-memory-size-alignment-in-devm_memremap_pages_release.patch
and it can be found in the queue-4.9 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable(a)vger.kernel.org> know about it.
>From 10a0cd6e4932b5078215b1ec2c896597eec0eff9 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jan=20H=2E=20Sch=C3=B6nherr?= <jschoenh(a)amazon.de>
Date: Fri, 19 Jan 2018 16:27:54 -0800
Subject: mm: Fix memory size alignment in devm_memremap_pages_release()
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
From: Jan H. Schönherr <jschoenh(a)amazon.de>
commit 10a0cd6e4932b5078215b1ec2c896597eec0eff9 upstream.
The functions devm_memremap_pages() and devm_memremap_pages_release() use
different ways to calculate the section-aligned amount of memory. The
latter function may use an incorrect size if the memory region is small
but straddles a section border.
Use the same code for both.
Cc: <stable(a)vger.kernel.org>
Fixes: 5f29a77cd957 ("mm: fix mixed zone detection in devm_memremap_pages")
Signed-off-by: Jan H. Schönherr <jschoenh(a)amazon.de>
Signed-off-by: Dan Williams <dan.j.williams(a)intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org>
---
kernel/memremap.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
--- a/kernel/memremap.c
+++ b/kernel/memremap.c
@@ -245,7 +245,8 @@ static void devm_memremap_pages_release(
/* pages are dead and unused, undo the arch mapping */
align_start = res->start & ~(SECTION_SIZE - 1);
- align_size = ALIGN(resource_size(res), SECTION_SIZE);
+ align_size = ALIGN(res->start + resource_size(res), SECTION_SIZE)
+ - align_start;
lock_device_hotplug();
mem_hotplug_begin();
Patches currently in stable-queue which might be from jschoenh(a)amazon.de are
queue-4.9/mm-fix-memory-size-alignment-in-devm_memremap_pages_release.patch
This is a note to let you know that I've just added the patch titled
MIPS: Fix typo BIG_ENDIAN to CPU_BIG_ENDIAN
to the 4.9-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum…
The filename of the patch is:
mips-fix-typo-big_endian-to-cpu_big_endian.patch
and it can be found in the queue-4.9 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable(a)vger.kernel.org> know about it.
>From 2e6522c565522a2e18409c315c49d78c8b74807b Mon Sep 17 00:00:00 2001
From: Corentin Labbe <clabbe.montjoie(a)gmail.com>
Date: Wed, 17 Jan 2018 19:56:38 +0100
Subject: MIPS: Fix typo BIG_ENDIAN to CPU_BIG_ENDIAN
From: Corentin Labbe <clabbe.montjoie(a)gmail.com>
commit 2e6522c565522a2e18409c315c49d78c8b74807b upstream.
MIPS_GENERIC selects some options conditional on BIG_ENDIAN which does
not exist.
Replace BIG_ENDIAN with CPU_BIG_ENDIAN which is the correct kconfig
name. Note that BMIPS_GENERIC does the same which confirms that this
patch is needed.
Fixes: eed0eabd12ef0 ("MIPS: generic: Introduce generic DT-based board support")
Signed-off-by: Corentin Labbe <clabbe.montjoie(a)gmail.com>
Reviewed-by: James Hogan <jhogan(a)kernel.org>
Cc: Ralf Baechle <ralf(a)linux-mips.org>
Cc: linux-mips(a)linux-mips.org
Cc: <stable(a)vger.kernel.org> # 4.9+
Patchwork: https://patchwork.linux-mips.org/patch/18495/
[jhogan(a)kernel.org: Clean up commit message]
Signed-off-by: James Hogan <jhogan(a)kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org>
---
arch/mips/Kconfig | 12 ++++++------
1 file changed, 6 insertions(+), 6 deletions(-)
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -112,12 +112,12 @@ config MIPS_GENERIC
select SYS_SUPPORTS_MULTITHREADING
select SYS_SUPPORTS_RELOCATABLE
select SYS_SUPPORTS_SMARTMIPS
- select USB_EHCI_BIG_ENDIAN_DESC if BIG_ENDIAN
- select USB_EHCI_BIG_ENDIAN_MMIO if BIG_ENDIAN
- select USB_OHCI_BIG_ENDIAN_DESC if BIG_ENDIAN
- select USB_OHCI_BIG_ENDIAN_MMIO if BIG_ENDIAN
- select USB_UHCI_BIG_ENDIAN_DESC if BIG_ENDIAN
- select USB_UHCI_BIG_ENDIAN_MMIO if BIG_ENDIAN
+ select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
+ select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
+ select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
+ select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
+ select USB_UHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
+ select USB_UHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
select USE_OF
help
Select this to build a kernel which aims to support multiple boards,
Patches currently in stable-queue which might be from clabbe.montjoie(a)gmail.com are
queue-4.9/mips-fix-typo-big_endian-to-cpu_big_endian.patch
This is a note to let you know that I've just added the patch titled
jbd2: fix sphinx kernel-doc build warnings
to the 4.9-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum…
The filename of the patch is:
jbd2-fix-sphinx-kernel-doc-build-warnings.patch
and it can be found in the queue-4.9 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable(a)vger.kernel.org> know about it.
>From f69120ce6c024aa634a8fc25787205e42f0ccbe6 Mon Sep 17 00:00:00 2001
From: "Tobin C. Harding" <me(a)tobin.cc>
Date: Wed, 10 Jan 2018 00:27:29 -0500
Subject: jbd2: fix sphinx kernel-doc build warnings
From: Tobin C. Harding <me(a)tobin.cc>
commit f69120ce6c024aa634a8fc25787205e42f0ccbe6 upstream.
Sphinx emits various (26) warnings when building make target 'htmldocs'.
Currently struct definitions contain duplicate documentation, some as
kernel-docs and some as standard c89 comments. We can reduce
duplication while cleaning up the kernel docs.
Move all kernel-docs to right above each struct member. Use the set of
all existing comments (kernel-doc and c89). Add documentation for
missing struct members and function arguments.
Signed-off-by: Tobin C. Harding <me(a)tobin.cc>
Signed-off-by: Theodore Ts'o <tytso(a)mit.edu>
Cc: stable(a)vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org>
---
fs/jbd2/transaction.c | 5
include/linux/jbd2.h | 431 +++++++++++++++++++++++++++++++-------------------
2 files changed, 272 insertions(+), 164 deletions(-)
--- a/fs/jbd2/transaction.c
+++ b/fs/jbd2/transaction.c
@@ -488,8 +488,10 @@ void jbd2_journal_free_reserved(handle_t
EXPORT_SYMBOL(jbd2_journal_free_reserved);
/**
- * int jbd2_journal_start_reserved(handle_t *handle) - start reserved handle
+ * int jbd2_journal_start_reserved() - start reserved handle
* @handle: handle to start
+ * @type: for handle statistics
+ * @line_no: for handle statistics
*
* Start handle that has been previously reserved with jbd2_journal_reserve().
* This attaches @handle to the running transaction (or creates one if there's
@@ -619,6 +621,7 @@ error_out:
* int jbd2_journal_restart() - restart a handle .
* @handle: handle to restart
* @nblocks: nr credits requested
+ * @gfp_mask: memory allocation flags (for start_this_handle)
*
* Restart a handle for a multi-transaction filesystem
* operation.
--- a/include/linux/jbd2.h
+++ b/include/linux/jbd2.h
@@ -418,26 +418,41 @@ static inline void jbd_unlock_bh_journal
#define JI_WAIT_DATA (1 << __JI_WAIT_DATA)
/**
- * struct jbd_inode is the structure linking inodes in ordered mode
- * present in a transaction so that we can sync them during commit.
+ * struct jbd_inode - The jbd_inode type is the structure linking inodes in
+ * ordered mode present in a transaction so that we can sync them during commit.
*/
struct jbd2_inode {
- /* Which transaction does this inode belong to? Either the running
- * transaction or the committing one. [j_list_lock] */
+ /**
+ * @i_transaction:
+ *
+ * Which transaction does this inode belong to? Either the running
+ * transaction or the committing one. [j_list_lock]
+ */
transaction_t *i_transaction;
- /* Pointer to the running transaction modifying inode's data in case
- * there is already a committing transaction touching it. [j_list_lock] */
+ /**
+ * @i_next_transaction:
+ *
+ * Pointer to the running transaction modifying inode's data in case
+ * there is already a committing transaction touching it. [j_list_lock]
+ */
transaction_t *i_next_transaction;
- /* List of inodes in the i_transaction [j_list_lock] */
+ /**
+ * @i_list: List of inodes in the i_transaction [j_list_lock]
+ */
struct list_head i_list;
- /* VFS inode this inode belongs to [constant during the lifetime
- * of the structure] */
+ /**
+ * @i_vfs_inode:
+ *
+ * VFS inode this inode belongs to [constant for lifetime of structure]
+ */
struct inode *i_vfs_inode;
- /* Flags of inode [j_list_lock] */
+ /**
+ * @i_flags: Flags of inode [j_list_lock]
+ */
unsigned long i_flags;
};
@@ -447,12 +462,20 @@ struct jbd2_revoke_table_s;
* struct handle_s - The handle_s type is the concrete type associated with
* handle_t.
* @h_transaction: Which compound transaction is this update a part of?
+ * @h_journal: Which journal handle belongs to - used iff h_reserved set.
+ * @h_rsv_handle: Handle reserved for finishing the logical operation.
* @h_buffer_credits: Number of remaining buffers we are allowed to dirty.
- * @h_ref: Reference count on this handle
- * @h_err: Field for caller's use to track errors through large fs operations
- * @h_sync: flag for sync-on-close
- * @h_jdata: flag to force data journaling
- * @h_aborted: flag indicating fatal error on handle
+ * @h_ref: Reference count on this handle.
+ * @h_err: Field for caller's use to track errors through large fs operations.
+ * @h_sync: Flag for sync-on-close.
+ * @h_jdata: Flag to force data journaling.
+ * @h_reserved: Flag for handle for reserved credits.
+ * @h_aborted: Flag indicating fatal error on handle.
+ * @h_type: For handle statistics.
+ * @h_line_no: For handle statistics.
+ * @h_start_jiffies: Handle Start time.
+ * @h_requested_credits: Holds @h_buffer_credits after handle is started.
+ * @saved_alloc_context: Saved context while transaction is open.
**/
/* Docbook can't yet cope with the bit fields, but will leave the documentation
@@ -462,32 +485,23 @@ struct jbd2_revoke_table_s;
struct jbd2_journal_handle
{
union {
- /* Which compound transaction is this update a part of? */
transaction_t *h_transaction;
/* Which journal handle belongs to - used iff h_reserved set */
journal_t *h_journal;
};
- /* Handle reserved for finishing the logical operation */
handle_t *h_rsv_handle;
-
- /* Number of remaining buffers we are allowed to dirty: */
int h_buffer_credits;
-
- /* Reference count on this handle */
int h_ref;
-
- /* Field for caller's use to track errors through large fs */
- /* operations */
int h_err;
/* Flags [no locking] */
- unsigned int h_sync: 1; /* sync-on-close */
- unsigned int h_jdata: 1; /* force data journaling */
- unsigned int h_reserved: 1; /* handle with reserved credits */
- unsigned int h_aborted: 1; /* fatal error on handle */
- unsigned int h_type: 8; /* for handle statistics */
- unsigned int h_line_no: 16; /* for handle statistics */
+ unsigned int h_sync: 1;
+ unsigned int h_jdata: 1;
+ unsigned int h_reserved: 1;
+ unsigned int h_aborted: 1;
+ unsigned int h_type: 8;
+ unsigned int h_line_no: 16;
unsigned long h_start_jiffies;
unsigned int h_requested_credits;
@@ -727,228 +741,253 @@ jbd2_time_diff(unsigned long start, unsi
/**
* struct journal_s - The journal_s type is the concrete type associated with
* journal_t.
- * @j_flags: General journaling state flags
- * @j_errno: Is there an outstanding uncleared error on the journal (from a
- * prior abort)?
- * @j_sb_buffer: First part of superblock buffer
- * @j_superblock: Second part of superblock buffer
- * @j_format_version: Version of the superblock format
- * @j_state_lock: Protect the various scalars in the journal
- * @j_barrier_count: Number of processes waiting to create a barrier lock
- * @j_barrier: The barrier lock itself
- * @j_running_transaction: The current running transaction..
- * @j_committing_transaction: the transaction we are pushing to disk
- * @j_checkpoint_transactions: a linked circular list of all transactions
- * waiting for checkpointing
- * @j_wait_transaction_locked: Wait queue for waiting for a locked transaction
- * to start committing, or for a barrier lock to be released
- * @j_wait_done_commit: Wait queue for waiting for commit to complete
- * @j_wait_commit: Wait queue to trigger commit
- * @j_wait_updates: Wait queue to wait for updates to complete
- * @j_wait_reserved: Wait queue to wait for reserved buffer credits to drop
- * @j_checkpoint_mutex: Mutex for locking against concurrent checkpoints
- * @j_head: Journal head - identifies the first unused block in the journal
- * @j_tail: Journal tail - identifies the oldest still-used block in the
- * journal.
- * @j_free: Journal free - how many free blocks are there in the journal?
- * @j_first: The block number of the first usable block
- * @j_last: The block number one beyond the last usable block
- * @j_dev: Device where we store the journal
- * @j_blocksize: blocksize for the location where we store the journal.
- * @j_blk_offset: starting block offset for into the device where we store the
- * journal
- * @j_fs_dev: Device which holds the client fs. For internal journal this will
- * be equal to j_dev
- * @j_reserved_credits: Number of buffers reserved from the running transaction
- * @j_maxlen: Total maximum capacity of the journal region on disk.
- * @j_list_lock: Protects the buffer lists and internal buffer state.
- * @j_inode: Optional inode where we store the journal. If present, all journal
- * block numbers are mapped into this inode via bmap().
- * @j_tail_sequence: Sequence number of the oldest transaction in the log
- * @j_transaction_sequence: Sequence number of the next transaction to grant
- * @j_commit_sequence: Sequence number of the most recently committed
- * transaction
- * @j_commit_request: Sequence number of the most recent transaction wanting
- * commit
- * @j_uuid: Uuid of client object.
- * @j_task: Pointer to the current commit thread for this journal
- * @j_max_transaction_buffers: Maximum number of metadata buffers to allow in a
- * single compound commit transaction
- * @j_commit_interval: What is the maximum transaction lifetime before we begin
- * a commit?
- * @j_commit_timer: The timer used to wakeup the commit thread
- * @j_revoke_lock: Protect the revoke table
- * @j_revoke: The revoke table - maintains the list of revoked blocks in the
- * current transaction.
- * @j_revoke_table: alternate revoke tables for j_revoke
- * @j_wbuf: array of buffer_heads for jbd2_journal_commit_transaction
- * @j_wbufsize: maximum number of buffer_heads allowed in j_wbuf, the
- * number that will fit in j_blocksize
- * @j_last_sync_writer: most recent pid which did a synchronous write
- * @j_history_lock: Protect the transactions statistics history
- * @j_proc_entry: procfs entry for the jbd statistics directory
- * @j_stats: Overall statistics
- * @j_private: An opaque pointer to fs-private information.
- * @j_trans_commit_map: Lockdep entity to track transaction commit dependencies
*/
-
struct journal_s
{
- /* General journaling state flags [j_state_lock] */
+ /**
+ * @j_flags: General journaling state flags [j_state_lock]
+ */
unsigned long j_flags;
- /*
+ /**
+ * @j_errno:
+ *
* Is there an outstanding uncleared error on the journal (from a prior
* abort)? [j_state_lock]
*/
int j_errno;
- /* The superblock buffer */
+ /**
+ * @j_sb_buffer: The first part of the superblock buffer.
+ */
struct buffer_head *j_sb_buffer;
+
+ /**
+ * @j_superblock: The second part of the superblock buffer.
+ */
journal_superblock_t *j_superblock;
- /* Version of the superblock format */
+ /**
+ * @j_format_version: Version of the superblock format.
+ */
int j_format_version;
- /*
- * Protect the various scalars in the journal
+ /**
+ * @j_state_lock: Protect the various scalars in the journal.
*/
rwlock_t j_state_lock;
- /*
+ /**
+ * @j_barrier_count:
+ *
* Number of processes waiting to create a barrier lock [j_state_lock]
*/
int j_barrier_count;
- /* The barrier lock itself */
+ /**
+ * @j_barrier: The barrier lock itself.
+ */
struct mutex j_barrier;
- /*
+ /**
+ * @j_running_transaction:
+ *
* Transactions: The current running transaction...
* [j_state_lock] [caller holding open handle]
*/
transaction_t *j_running_transaction;
- /*
+ /**
+ * @j_committing_transaction:
+ *
* the transaction we are pushing to disk
* [j_state_lock] [caller holding open handle]
*/
transaction_t *j_committing_transaction;
- /*
+ /**
+ * @j_checkpoint_transactions:
+ *
* ... and a linked circular list of all transactions waiting for
* checkpointing. [j_list_lock]
*/
transaction_t *j_checkpoint_transactions;
- /*
+ /**
+ * @j_wait_transaction_locked:
+ *
* Wait queue for waiting for a locked transaction to start committing,
- * or for a barrier lock to be released
+ * or for a barrier lock to be released.
*/
wait_queue_head_t j_wait_transaction_locked;
- /* Wait queue for waiting for commit to complete */
+ /**
+ * @j_wait_done_commit: Wait queue for waiting for commit to complete.
+ */
wait_queue_head_t j_wait_done_commit;
- /* Wait queue to trigger commit */
+ /**
+ * @j_wait_commit: Wait queue to trigger commit.
+ */
wait_queue_head_t j_wait_commit;
- /* Wait queue to wait for updates to complete */
+ /**
+ * @j_wait_updates: Wait queue to wait for updates to complete.
+ */
wait_queue_head_t j_wait_updates;
- /* Wait queue to wait for reserved buffer credits to drop */
+ /**
+ * @j_wait_reserved:
+ *
+ * Wait queue to wait for reserved buffer credits to drop.
+ */
wait_queue_head_t j_wait_reserved;
- /* Semaphore for locking against concurrent checkpoints */
+ /**
+ * @j_checkpoint_mutex:
+ *
+ * Semaphore for locking against concurrent checkpoints.
+ */
struct mutex j_checkpoint_mutex;
- /*
+ /**
+ * @j_chkpt_bhs:
+ *
* List of buffer heads used by the checkpoint routine. This
* was moved from jbd2_log_do_checkpoint() to reduce stack
* usage. Access to this array is controlled by the
- * j_checkpoint_mutex. [j_checkpoint_mutex]
+ * @j_checkpoint_mutex. [j_checkpoint_mutex]
*/
struct buffer_head *j_chkpt_bhs[JBD2_NR_BATCH];
-
- /*
+
+ /**
+ * @j_head:
+ *
* Journal head: identifies the first unused block in the journal.
* [j_state_lock]
*/
unsigned long j_head;
- /*
+ /**
+ * @j_tail:
+ *
* Journal tail: identifies the oldest still-used block in the journal.
* [j_state_lock]
*/
unsigned long j_tail;
- /*
+ /**
+ * @j_free:
+ *
* Journal free: how many free blocks are there in the journal?
* [j_state_lock]
*/
unsigned long j_free;
- /*
- * Journal start and end: the block numbers of the first usable block
- * and one beyond the last usable block in the journal. [j_state_lock]
+ /**
+ * @j_first:
+ *
+ * The block number of the first usable block in the journal
+ * [j_state_lock].
*/
unsigned long j_first;
+
+ /**
+ * @j_last:
+ *
+ * The block number one beyond the last usable block in the journal
+ * [j_state_lock].
+ */
unsigned long j_last;
- /*
- * Device, blocksize and starting block offset for the location where we
- * store the journal.
+ /**
+ * @j_dev: Device where we store the journal.
*/
struct block_device *j_dev;
+
+ /**
+ * @j_blocksize: Block size for the location where we store the journal.
+ */
int j_blocksize;
+
+ /**
+ * @j_blk_offset:
+ *
+ * Starting block offset into the device where we store the journal.
+ */
unsigned long long j_blk_offset;
+
+ /**
+ * @j_devname: Journal device name.
+ */
char j_devname[BDEVNAME_SIZE+24];
- /*
+ /**
+ * @j_fs_dev:
+ *
* Device which holds the client fs. For internal journal this will be
* equal to j_dev.
*/
struct block_device *j_fs_dev;
- /* Total maximum capacity of the journal region on disk. */
+ /**
+ * @j_maxlen: Total maximum capacity of the journal region on disk.
+ */
unsigned int j_maxlen;
- /* Number of buffers reserved from the running transaction */
+ /**
+ * @j_reserved_credits:
+ *
+ * Number of buffers reserved from the running transaction.
+ */
atomic_t j_reserved_credits;
- /*
- * Protects the buffer lists and internal buffer state.
+ /**
+ * @j_list_lock: Protects the buffer lists and internal buffer state.
*/
spinlock_t j_list_lock;
- /* Optional inode where we store the journal. If present, all */
- /* journal block numbers are mapped into this inode via */
- /* bmap(). */
+ /**
+ * @j_inode:
+ *
+ * Optional inode where we store the journal. If present, all
+ * journal block numbers are mapped into this inode via bmap().
+ */
struct inode *j_inode;
- /*
+ /**
+ * @j_tail_sequence:
+ *
* Sequence number of the oldest transaction in the log [j_state_lock]
*/
tid_t j_tail_sequence;
- /*
+ /**
+ * @j_transaction_sequence:
+ *
* Sequence number of the next transaction to grant [j_state_lock]
*/
tid_t j_transaction_sequence;
- /*
+ /**
+ * @j_commit_sequence:
+ *
* Sequence number of the most recently committed transaction
* [j_state_lock].
*/
tid_t j_commit_sequence;
- /*
+ /**
+ * @j_commit_request:
+ *
* Sequence number of the most recent transaction wanting commit
* [j_state_lock]
*/
tid_t j_commit_request;
- /*
+ /**
+ * @j_uuid:
+ *
* Journal uuid: identifies the object (filesystem, LVM volume etc)
* backed by this journal. This will eventually be replaced by an array
* of uuids, allowing us to index multiple devices within a single
@@ -956,85 +995,151 @@ struct journal_s
*/
__u8 j_uuid[16];
- /* Pointer to the current commit thread for this journal */
+ /**
+ * @j_task: Pointer to the current commit thread for this journal.
+ */
struct task_struct *j_task;
- /*
+ /**
+ * @j_max_transaction_buffers:
+ *
* Maximum number of metadata buffers to allow in a single compound
- * commit transaction
+ * commit transaction.
*/
int j_max_transaction_buffers;
- /*
+ /**
+ * @j_commit_interval:
+ *
* What is the maximum transaction lifetime before we begin a commit?
*/
unsigned long j_commit_interval;
- /* The timer used to wakeup the commit thread: */
+ /**
+ * @j_commit_timer: The timer used to wakeup the commit thread.
+ */
struct timer_list j_commit_timer;
- /*
- * The revoke table: maintains the list of revoked blocks in the
- * current transaction. [j_revoke_lock]
+ /**
+ * @j_revoke_lock: Protect the revoke table.
*/
spinlock_t j_revoke_lock;
+
+ /**
+ * @j_revoke:
+ *
+ * The revoke table - maintains the list of revoked blocks in the
+ * current transaction.
+ */
struct jbd2_revoke_table_s *j_revoke;
+
+ /**
+ * @j_revoke_table: Alternate revoke tables for j_revoke.
+ */
struct jbd2_revoke_table_s *j_revoke_table[2];
- /*
- * array of bhs for jbd2_journal_commit_transaction
+ /**
+ * @j_wbuf: Array of bhs for jbd2_journal_commit_transaction.
*/
struct buffer_head **j_wbuf;
+
+ /**
+ * @j_wbufsize:
+ *
+ * Size of @j_wbuf array.
+ */
int j_wbufsize;
- /*
- * this is the pid of hte last person to run a synchronous operation
- * through the journal
+ /**
+ * @j_last_sync_writer:
+ *
+ * The pid of the last person to run a synchronous operation
+ * through the journal.
*/
pid_t j_last_sync_writer;
- /*
- * the average amount of time in nanoseconds it takes to commit a
+ /**
+ * @j_average_commit_time:
+ *
+ * The average amount of time in nanoseconds it takes to commit a
* transaction to disk. [j_state_lock]
*/
u64 j_average_commit_time;
- /*
- * minimum and maximum times that we should wait for
- * additional filesystem operations to get batched into a
- * synchronous handle in microseconds
+ /**
+ * @j_min_batch_time:
+ *
+ * Minimum time that we should wait for additional filesystem operations
+ * to get batched into a synchronous handle in microseconds.
*/
u32 j_min_batch_time;
+
+ /**
+ * @j_max_batch_time:
+ *
+ * Maximum time that we should wait for additional filesystem operations
+ * to get batched into a synchronous handle in microseconds.
+ */
u32 j_max_batch_time;
- /* This function is called when a transaction is closed */
+ /**
+ * @j_commit_callback:
+ *
+ * This function is called when a transaction is closed.
+ */
void (*j_commit_callback)(journal_t *,
transaction_t *);
/*
* Journal statistics
*/
+
+ /**
+ * @j_history_lock: Protect the transactions statistics history.
+ */
spinlock_t j_history_lock;
+
+ /**
+ * @j_proc_entry: procfs entry for the jbd statistics directory.
+ */
struct proc_dir_entry *j_proc_entry;
+
+ /**
+ * @j_stats: Overall statistics.
+ */
struct transaction_stats_s j_stats;
- /* Failed journal commit ID */
+ /**
+ * @j_failed_commit: Failed journal commit ID.
+ */
unsigned int j_failed_commit;
- /*
+ /**
+ * @j_private:
+ *
* An opaque pointer to fs-private information. ext3 puts its
- * superblock pointer here
+ * superblock pointer here.
*/
void *j_private;
- /* Reference to checksum algorithm driver via cryptoapi */
+ /**
+ * @j_chksum_driver:
+ *
+ * Reference to checksum algorithm driver via cryptoapi.
+ */
struct crypto_shash *j_chksum_driver;
- /* Precomputed journal UUID checksum for seeding other checksums */
+ /**
+ * @j_csum_seed:
+ *
+ * Precomputed journal UUID checksum for seeding other checksums.
+ */
__u32 j_csum_seed;
#ifdef CONFIG_DEBUG_LOCK_ALLOC
- /*
+ /**
+ * @j_trans_commit_map:
+ *
* Lockdep entity to track transaction commit dependencies. Handles
* hold this "lock" for read, when we wait for commit, we acquire the
* "lock" for writing. This matches the properties of jbd2 journalling
Patches currently in stable-queue which might be from me(a)tobin.cc are
queue-4.9/jbd2-fix-sphinx-kernel-doc-build-warnings.patch
This is a note to let you know that I've just added the patch titled
ext4: save error to disk in __ext4_grp_locked_error()
to the 4.9-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum…
The filename of the patch is:
ext4-save-error-to-disk-in-__ext4_grp_locked_error.patch
and it can be found in the queue-4.9 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable(a)vger.kernel.org> know about it.
>From 06f29cc81f0350261f59643a505010531130eea0 Mon Sep 17 00:00:00 2001
From: Zhouyi Zhou <zhouzhouyi(a)gmail.com>
Date: Wed, 10 Jan 2018 00:34:19 -0500
Subject: ext4: save error to disk in __ext4_grp_locked_error()
From: Zhouyi Zhou <zhouzhouyi(a)gmail.com>
commit 06f29cc81f0350261f59643a505010531130eea0 upstream.
In the function __ext4_grp_locked_error(), __save_error_info()
is called to save error info in super block block, but does not sync
that information to disk to info the subsequence fsck after reboot.
This patch writes the error information to disk. After this patch,
I think there is no obvious EXT4 error handle branches which leads to
"Remounting filesystem read-only" will leave the disk partition miss
the subsequence fsck.
Signed-off-by: Zhouyi Zhou <zhouzhouyi(a)gmail.com>
Signed-off-by: Theodore Ts'o <tytso(a)mit.edu>
Cc: stable(a)vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org>
---
fs/ext4/super.c | 1 +
1 file changed, 1 insertion(+)
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -720,6 +720,7 @@ __acquires(bitlock)
}
ext4_unlock_group(sb, grp);
+ ext4_commit_super(sb, 1);
ext4_handle_error(sb);
/*
* We only get here in the ERRORS_RO case; relocking the group
Patches currently in stable-queue which might be from zhouzhouyi(a)gmail.com are
queue-4.9/ext4-save-error-to-disk-in-__ext4_grp_locked_error.patch
This is a note to let you know that I've just added the patch titled
ext4: fix a race in the ext4 shutdown path
to the 4.9-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum…
The filename of the patch is:
ext4-fix-a-race-in-the-ext4-shutdown-path.patch
and it can be found in the queue-4.9 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable(a)vger.kernel.org> know about it.
>From abbc3f9395c76d554a9ed27d4b1ebfb5d9b0e4ca Mon Sep 17 00:00:00 2001
From: Harshad Shirwadkar <harshads(a)google.com>
Date: Wed, 10 Jan 2018 00:13:13 -0500
Subject: ext4: fix a race in the ext4 shutdown path
From: Harshad Shirwadkar <harshads(a)google.com>
commit abbc3f9395c76d554a9ed27d4b1ebfb5d9b0e4ca upstream.
This patch fixes a race between the shutdown path and bio completion
handling. In the ext4 direct io path with async io, after submitting a
bio to the block layer, if journal starting fails,
ext4_direct_IO_write() would bail out pretending that the IO
failed. The caller would have had no way of knowing whether or not the
IO was successfully submitted. So instead, we return -EIOCBQUEUED in
this case. Now, the caller knows that the IO was submitted. The bio
completion handler takes care of the error.
Tested: Ran the shutdown xfstest test 461 in loop for over 2 hours across
4 machines resulting in over 400 runs. Verified that the race didn't
occur. Usually the race was seen in about 20-30 iterations.
Signed-off-by: Harshad Shirwadkar <harshads(a)google.com>
Signed-off-by: Theodore Ts'o <tytso(a)mit.edu>
Cc: stable(a)vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org>
---
fs/ext4/inode.c | 16 ++++++++++++----
1 file changed, 12 insertions(+), 4 deletions(-)
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -3526,10 +3526,18 @@ static ssize_t ext4_direct_IO_write(stru
/* Credits for sb + inode write */
handle = ext4_journal_start(inode, EXT4_HT_INODE, 2);
if (IS_ERR(handle)) {
- /* This is really bad luck. We've written the data
- * but cannot extend i_size. Bail out and pretend
- * the write failed... */
- ret = PTR_ERR(handle);
+ /*
+ * We wrote the data but cannot extend
+ * i_size. Bail out. In async io case, we do
+ * not return error here because we have
+ * already submmitted the corresponding
+ * bio. Returning error here makes the caller
+ * think that this IO is done and failed
+ * resulting in race with bio's completion
+ * handler.
+ */
+ if (!ret)
+ ret = PTR_ERR(handle);
if (inode->i_nlink)
ext4_orphan_del(NULL, inode);
Patches currently in stable-queue which might be from harshads(a)google.com are
queue-4.9/ext4-fix-a-race-in-the-ext4-shutdown-path.patch
This is a note to let you know that I've just added the patch titled
drm/radeon: adjust tested variable
to the 4.9-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum…
The filename of the patch is:
drm-radeon-adjust-tested-variable.patch
and it can be found in the queue-4.9 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable(a)vger.kernel.org> know about it.
>From 3a61b527b4e1f285d21b6e9e623dc45cf8bb391f Mon Sep 17 00:00:00 2001
From: Julia Lawall <Julia.Lawall(a)lip6.fr>
Date: Sat, 27 Jan 2018 15:28:15 +0100
Subject: drm/radeon: adjust tested variable
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
From: Julia Lawall <Julia.Lawall(a)lip6.fr>
commit 3a61b527b4e1f285d21b6e9e623dc45cf8bb391f upstream.
Check the variable that was most recently initialized.
The semantic match that finds this problem is as follows:
(http://coccinelle.lip6.fr/)
// <smpl>
@@
expression x, y, f, g, e, m;
statement S1,S2,S3,S4;
@@
x = f(...);
if (\(<+...x...+>\&e\)) S1 else S2
(
x = g(...);
|
m = g(...,&x,...);
|
y = g(...);
*if (e)
S3 else S4
)
// </smpl>
Signed-off-by: Julia Lawall <Julia.Lawall(a)lip6.fr>
Reviewed-by: Christian König <christian.koenig(a)amd.com>
Signed-off-by: Alex Deucher <alexander.deucher(a)amd.com>
Cc: stable(a)vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org>
---
drivers/gpu/drm/radeon/radeon_uvd.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/gpu/drm/radeon/radeon_uvd.c
+++ b/drivers/gpu/drm/radeon/radeon_uvd.c
@@ -995,7 +995,7 @@ int radeon_uvd_calc_upll_dividers(struct
/* calc dclk divider with current vco freq */
dclk_div = radeon_uvd_calc_upll_post_div(vco_freq, dclk,
pd_min, pd_even);
- if (vclk_div > pd_max)
+ if (dclk_div > pd_max)
break; /* vco is too big, it has to stop */
/* calc score with current vco freq */
Patches currently in stable-queue which might be from Julia.Lawall(a)lip6.fr are
queue-4.9/drm-radeon-adjust-tested-variable.patch
This is a note to let you know that I've just added the patch titled
ext4: correct documentation for grpid mount option
to the 4.9-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum…
The filename of the patch is:
ext4-correct-documentation-for-grpid-mount-option.patch
and it can be found in the queue-4.9 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable(a)vger.kernel.org> know about it.
>From 9f0372488cc9243018a812e8cfbf27de650b187b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ernesto=20A=2E=20Fern=C3=A1ndez?=
<ernesto.mnd.fernandez(a)gmail.com>
Date: Thu, 11 Jan 2018 13:43:33 -0500
Subject: ext4: correct documentation for grpid mount option
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
From: Ernesto A. Fernández <ernesto.mnd.fernandez(a)gmail.com>
commit 9f0372488cc9243018a812e8cfbf27de650b187b upstream.
The grpid option is currently described as being the same as nogrpid.
Signed-off-by: Ernesto A. Fernández <ernesto.mnd.fernandez(a)gmail.com>
Signed-off-by: Theodore Ts'o <tytso(a)mit.edu>
Cc: stable(a)vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org>
---
Documentation/filesystems/ext4.txt | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/Documentation/filesystems/ext4.txt
+++ b/Documentation/filesystems/ext4.txt
@@ -233,7 +233,7 @@ data_err=ignore(*) Just print an error m
data_err=abort Abort the journal if an error occurs in a file
data buffer in ordered mode.
-grpid Give objects the same group ID as their creator.
+grpid New objects have the group ID of their parent.
bsdgroups
nogrpid (*) New objects have the group ID of their creator.
Patches currently in stable-queue which might be from ernesto.mnd.fernandez(a)gmail.com are
queue-4.9/ext4-correct-documentation-for-grpid-mount-option.patch