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path: root/Documentation/devicetree/bindings/misc

Age	Commit message (Expand)	Author
2020-06-18	dt: fix reference to olpc,xo1.75-ec.txt	Mauro Carvalho Chehab
2020-03-31	dt-bindings: Add missing 'additionalProperties: false'	Rob Herring
2020-02-24	docs: dt: fix several broken references due to renames	Mauro Carvalho Chehab
2019-12-17	dt-bindings: misc: Document reg for aspeed, p2a-ctrl nodes	Andrew Jeffery
2019-11-14	dt-bindings: Add syscon YAML description	Maxime Ripard
2019-08-21	Merge tag 'v5.3-rc5' into devel	Linus Walleij
2019-08-05	dt-bindings: aspeed: Remove mention of deprecated compatibles	Andrew Jeffery
2019-07-26	dt-bindings: Fix more $id value mismatches filenames	Rob Herring
2019-07-19	Merge tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/s...	Linus Torvalds
2019-07-14	Merge tag 'platform-drivers-x86-v5.3-1' of git://git.infradead.org/linux-plat...	Linus Torvalds
2019-06-21	dt-bindings: xilinx-sdfec: Add SDFEC binding	Dragan Cvetic
2019-05-20	Documentation: DT: Add entry for DPAA2 console	Ioana Ciornei
2019-05-20	dt-bindings: olpc,xo1.75-ec: Add OLPC XO-1.75 EC bindings	Lubomir Rintel
2019-05-16	Merge tag 'armsoc-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc	Linus Torvalds
2019-04-25	dt-bindings: misc: aspeed-p2a-ctrl: add support	Patrick Venture
2019-04-23	soc: ixp4xx: qmgr: Add DT bindings for IXP4xx qmgr	Linus Walleij
2019-02-12	misc: dt-bindings: Add Qualcomm Fastrpc bindings	Srinivas Kandagatla
2018-12-28	Merge tag 'char-misc-4.21-rc1' of git://git.kernel.org/pub/scm/linux/kernel/g...	Linus Torvalds
2018-12-05	net: documentation: build a directory structure for drivers	Jakub Kicinski
2018-11-07	dt-bindings: misc/pvpanic: add document for pvpanic-mmio	Peng Hao
2018-10-26	Merge tag 'devicetree-for-4.20' of git://git.kernel.org/pub/scm/linux/kernel/...	Linus Torvalds
2018-10-15	dt-bindings: misc: bk4: Add device tree binding for Liebherr's BK4 SPI bus	Lukasz Majewski
2018-09-25	Documentation: fsl-mc: add iommu-map device-tree binding for fsl-mc bus	Nipun Gupta
2018-07-10	dt-bindings: misc: ASPEED coprocessor interrupt controller	Benjamin Herrenschmidt
2018-02-12	auxdisplay: Move arm-charlcd binding to correct folder	Andy Shevchenko
2017-12-21	Merge tag 'tegra-for-4.16-dt-bindings' of ssh://gitolite.kernel.org/pub/scm/l...	Arnd Bergmann
2017-12-13	dt-bindings: misc: Add Tegra186 MISC registers bindings	Thierry Reding
2017-12-06	dt-bindings: Remove leading 0x from bindings notation	Mathieu Malaterre
2017-09-20	dt-bindings: misc: achc: Add device tree binding for GE ACHC	Martyn Welch
2017-09-05	dt-bindings: Remove "status" from examples	Rob Herring
2017-06-20	dt-bindings: syscon: Add DT bindings documentation for Allwinner V3s syscon	Icenowy Zheng
2017-06-01	dt-bindings: syscon: Add DT bindings documentation for Allwinner syscon	LABBE Corentin
2017-02-23	Merge tag 'sound-4.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/t...	Linus Torvalds
2017-01-19	eeprom: Add IDT 89HPESx driver bindings file	Serge Semin
2016-12-15	misc: atmel-ssc: register as sound DAI if #sound-dai-cells is present	Peter Rosin
2016-08-05	ramoops: use DT reserved-memory bindings	Kees Cook
2016-06-14	pstore/ram: add Device Tree bindings	Greg Hackmann
2016-04-26	Documentation: fsl-mc: binding updates for MSIs, ranges, PHYs	Stuart Yoder
2016-02-09	Documentation: devicetree: Add DT bindings to eeprom_93xx46 driver.	Cory Tusar
2015-12-09	dt-bindings: Consolidate SRAM bindings from all vendors	Krzysztof Kozlowski
2015-11-06	Merge tag 'devicetree-for-4.4' of git://git.kernel.org/pub/scm/linux/kernel/g...	Linus Torvalds
2015-10-22	dt-bindings: consolidate various misc bindings	Rob Herring
2015-10-22	dt-bindings: consolidate eeprom bindings	Rob Herring
2015-10-17	misc: sram: extend usage of reserved partitions	Vladimir Zapolskiy
2015-08-05	nvmem: sunxi: Move the SID driver to the nvmem framework	Maxime Ripard
2015-05-04	of: Document long-ram-code property in nvidia,tegra20-apbmisc	Tomeu Vizoso
2015-04-21	Merge tag 'char-misc-4.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/gi...	Linus Torvalds
2015-04-03	Documentation: DT: lis302: update wakeup binding	Sebastian Reichel
2015-03-26	dt-bindings: brcm: rationalize Broadcom documentation naming	Scott Branden
2015-02-17	Merge tag 'dt-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm...	Linus Torvalds

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generated by cgit v1.2.3 (git 2.25.1) at 2024-07-11 07:27:56 +0000

/*
 * linux/fs/jbd2/commit.c
 *
 * Written by Stephen C. Tweedie <sct@redhat.com>, 1998
 *
 * Copyright 1998 Red Hat corp --- All Rights Reserved
 *
 * This file is part of the Linux kernel and is made available under
 * the terms of the GNU General Public License, version 2, or at your
 * option, any later version, incorporated herein by reference.
 *
 * Journal commit routines for the generic filesystem journaling code;
 * part of the ext2fs journaling system.
 */

#include <linux/time.h>
#include <linux/fs.h>
#include <linux/jbd2.h>
#include <linux/errno.h>
#include <linux/slab.h>
#include <linux/mm.h>
#include <linux/pagemap.h>
#include <linux/jiffies.h>
#include <linux/crc32.h>
#include <linux/writeback.h>
#include <linux/backing-dev.h>
#include <linux/bio.h>
#include <linux/blkdev.h>
#include <linux/bitops.h>
#include <trace/events/jbd2.h>
#include <asm/system.h>

/*
 * Default IO end handler for temporary BJ_IO buffer_heads.
 */
static void journal_end_buffer_io_sync(struct buffer_head *bh, int uptodate)
{
	BUFFER_TRACE(bh, "");
	if (uptodate)
		set_buffer_uptodate(bh);
	else
		clear_buffer_uptodate(bh);
	unlock_buffer(bh);
}

/*
 * When an ext4 file is truncated, it is possible that some pages are not
 * successfully freed, because they are attached to a committing transaction.
 * After the transaction commits, these pages are left on the LRU, with no
 * ->mapping, and with attached buffers.  These pages are trivially reclaimable
 * by the VM, but their apparent absence upsets the VM accounting, and it makes
 * the numbers in /proc/meminfo look odd.
 *
 * So here, we have a buffer which has just come off the forget list.  Look to
 * see if we can strip all buffers from the backing page.
 *
 * Called under lock_journal(), and possibly under journal_datalist_lock.  The
 * caller provided us with a ref against the buffer, and we drop that here.
 */
static void release_buffer_page(struct buffer_head *bh)
{
	struct page *page;

	if (buffer_dirty(bh))
		goto nope;
	if (atomic_read(&bh->b_count) != 1)
		goto nope;
	page = bh->b_page;
	if (!page)
		goto nope;
	if (page->mapping)
		goto nope;

	/* OK, it's a truncated page */
	if (!trylock_page(page))
		goto nope;

	page_cache_get(page);
	__brelse(bh);
	try_to_free_buffers(page);
	unlock_page(page);
	page_cache_release(page);
	return;

nope:
	__brelse(bh);
}

/*
 * Done it all: now submit the commit record.  We should have
 * cleaned up our previous buffers by now, so if we are in abort
 * mode we can now just skip the rest of the journal write
 * entirely.
 *
 * Returns 1 if the journal needs to be aborted or 0 on success
 */
static int journal_submit_commit_record(journal_t *journal,
					transaction_t *commit_transaction,
					struct buffer_head **cbh,
					__u32 crc32_sum)
{
	struct journal_head *descriptor;
	struct commit_header *tmp;
	struct buffer_head *bh;
	int ret;
	struct timespec now = current_kernel_time();

	if (is_journal_aborted(journal))
		return 0;

	descriptor = jbd2_journal_get_descriptor_buffer(journal);
	if (!descriptor)
		return 1;

	bh = jh2bh(descriptor);

	tmp = (struct commit_header *)bh->b_data;
	tmp->h_magic = cpu_to_be32(JBD2_MAGIC_NUMBER);
	tmp->h_blocktype = cpu_to_be32(JBD2_COMMIT_BLOCK);
	tmp->h_sequence = cpu_to_be32(commit_transaction->t_tid);
	tmp->h_commit_sec = cpu_to_be64(now.tv_sec);
	tmp->h_commit_nsec = cpu_to_be32(now.tv_nsec);

	if (JBD2_HAS_COMPAT_FEATURE(journal,
				    JBD2_FEATURE_COMPAT_CHECKSUM)) {
		tmp->h_chksum_type 	= JBD2_CRC32_CHKSUM;
		tmp->h_chksum_size 	= JBD2_CRC32_CHKSUM_SIZE;
		tmp->h_chksum[0] 	= cpu_to_be32(crc32_sum);
	}

	JBUFFER_TRACE(descriptor, "submit commit block");
	lock_buffer(bh);
	clear_buffer_dirty(bh);
	set_buffer_uptodate(bh);
	bh->b_end_io = journal_end_buffer_io_sync;

	if (journal->j_flags & JBD2_BARRIER &&
	    !JBD2_HAS_INCOMPAT_FEATURE(journal,
				       JBD2_FEATURE_INCOMPAT_ASYNC_COMMIT))
		ret = submit_bh(WRITE_SYNC_PLUG | WRITE_FLUSH_FUA, bh);
	else
		ret = submit_bh(WRITE_SYNC_PLUG, bh);

	*cbh = bh;
	return ret;
}

/*
 * This function along with journal_submit_commit_record
 * allows to write the commit record asynchronously.
 */
static int journal_wait_on_commit_record(journal_t *journal,
					 struct buffer_head *bh)
{
	int ret = 0;

	clear_buffer_dirty(bh);
	wait_on_buffer(bh);

	if (unlikely(!buffer_uptodate(bh)))
		ret = -EIO;
	put_bh(bh);            /* One for getblk() */
	jbd2_journal_put_journal_head(bh2jh(bh));

	return ret;
}

/*
 * write the filemap data using writepage() address_space_operations.
 * We don't do block allocation here even for delalloc. We don't
 * use writepages() because with dealyed allocation we may be doing
 * block allocation in writepages().
 */
static int journal_submit_inode_data_buffers(struct address_space *mapping)
{
	int ret;
	stru