kernel/linux.git/include/linux/buffer_head.h, branch v6.6.132

buffer: make folio_create_empty_buffers() return a buffer_head

2025-02-08T08:52:26+00:00

[ Upstream commit 3decb8564eff88a2533f83b01cec2cf9259c3eaf ] Patch series "Finish the create_empty_buffers() transition", v2. Pankaj recently added folio_create_empty_buffers() as the folio equivalent to create_empty_buffers(). This patch set finishes the conversion by first converting all remaining filesystems to call folio_create_empty_buffers(), then renaming it back to create_empty_buffers(). I took the opportunity to make a few simplifications like making folio_create_empty_buffers() return the head buffer and extracting get_nth_bh() from nilfs2. A few of the patches in this series aren't directly related to create_empty_buffers(), but I saw them while I was working on this and thought they'd be easy enough to add to this series. Compile-tested only, other than ext4. This patch (of 26): Almost all callers want to know the first BH that was allocated for this folio. We already have that handy, so return it. Link: https://lkml.kernel.org/r/20231016201114.1928083-1-willy@infradead.org Link: https://lkml.kernel.org/r/20231016201114.1928083-3-willy@infradead.org Signed-off-by: Matthew Wilcox (Oracle) Reviewed-by: Pankaj Raghav Cc: Andreas Gruenbacher Cc: Ryusuke Konishi Signed-off-by: Andrew Morton Stable-dep-of: 367a9bffabe0 ("nilfs2: protect access to buffers with no active references") Signed-off-by: Sasha Levin

Merge tag 'ext4_for_linus-6.6-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4

2023-09-17T17:33:53+00:00

Pull ext4 fixes from Ted Ts'o: "Regression and bug fixes for ext4" * tag 'ext4_for_linus-6.6-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: ext4: fix rec_len verify error ext4: do not let fstrim block system suspend ext4: move setting of trimmed bit into ext4_try_to_trim_range() jbd2: Fix memory leak in journal_init_common() jbd2: Remove page size assumptions buffer: Make bh_offset() work for compound pages

buffer: Make bh_offset() work for compound pages

2023-09-07T19:16:49+00:00

If the buffer pointed to by the buffer_head is part of a compound page, bh_offset() assumes that b_page is the precise page that contains the data. A recent change to jbd2 inadvertently violated that assumption. By using page_size(), we support both b_page being set to the head page (as page_size() will return the size of the entire folio) and the precise page (as it will return PAGE_SIZE for a tail page). Fixes: 8147c4c4546f ("jbd2: use a folio in jbd2_journal_write_metadata_buffer()") Reported-by: Zorro Lang Tested-by: Ritesh Harjani (IBM) Signed-off-by: Matthew Wilcox (Oracle)

Merge tag 'for-6.6/block-2023-08-28' of git://git.kernel.dk/linux

2023-08-30T03:21:42+00:00

Pull block updates from Jens Axboe: "Pretty quiet round for this release. This contains: - Add support for zoned storage to ublk (Andreas, Ming) - Series improving performance for drivers that mark themselves as needing a blocking context for issue (Bart) - Cleanup the flush logic (Chengming) - sed opal keyring support (Greg) - Fixes and improvements to the integrity support (Jinyoung) - Add some exports for bcachefs that we can hopefully delete again in the future (Kent) - deadline throttling fix (Zhiguo) - Series allowing building the kernel without buffer_head support (Christoph) - Sanitize the bio page adding flow (Christoph) - Write back cache fixes (Christoph) - MD updates via Song: - Fix perf regression for raid0 large sequential writes (Jan) - Fix split bio iostat for raid0 (David) - Various raid1 fixes (Heinz, Xueshi) - raid6test build fixes (WANG) - Deprecate bitmap file support (Christoph) - Fix deadlock with md sync thread (Yu) - Refactor md io accounting (Yu) - Various non-urgent fixes (Li, Yu, Jack) - Various fixes and cleanups (Arnd, Azeem, Chengming, Damien, Li, Ming, Nitesh, Ruan, Tejun, Thomas, Xu)" * tag 'for-6.6/block-2023-08-28' of git://git.kernel.dk/linux: (113 commits) block: use strscpy() to instead of strncpy() block: sed-opal: keyring support for SED keys block: sed-opal: Implement IOC_OPAL_REVERT_LSP block: sed-opal: Implement IOC_OPAL_DISCOVERY blk-mq: prealloc tags when increase tagset nr_hw_queues blk-mq: delete redundant tagset map update when fallback blk-mq: fix tags leak when shrink nr_hw_queues ublk: zoned: support REQ_OP_ZONE_RESET_ALL md: raid0: account for split bio in iostat accounting md/raid0: Fix performance regression for large sequential writes md/raid0: Factor out helper for mapping and submitting a bio md raid1: allow writebehind to work on any leg device set WriteMostly md/raid1: hold the barrier until handle_read_error() finishes md/raid1: free the r1bio before waiting for blocked rdev md/raid1: call free_r1bio() before allow_barrier() in raid_end_bio_io() blk-cgroup: Fix NULL deref caused by blkg_policy_data being installed before init drivers/rnbd: restore sysfs interface to rnbd-client md/raid5-cache: fix null-ptr-deref for r5l_flush_stripe_to_raid() raid6: test: only check for Altivec if building on powerpc hosts raid6: test: make sure all intermediate and artifact files are .gitignored ...

buffer: remove set_bh_page()

2023-08-18T17:12:31+00:00

With all users converted to folio_set_bh(), remove this function. Link: https://lkml.kernel.org/r/20230713035512.4139457-8-willy@infradead.org Signed-off-by: Matthew Wilcox (Oracle) Reviewed-by: Jan Kara Cc: Alexander Viro Cc: Christian Brauner Cc: David Sterba Cc: Konstantin Komarov Cc: Nathan Chancellor Cc: Nick Desaulniers Cc: Pankaj Raghav Cc: "Theodore Ts'o" Cc: Tom Rix Signed-off-by: Andrew Morton

fs: convert block_commit_write to return void

2023-08-18T17:12:07+00:00

block_commit_write() always returns 0, this patch changes it to return void. Link: https://lkml.kernel.org/r/20230626055518.842392-3-beanhuo@iokpp.de Signed-off-by: Bean Huo Reviewed-by: Jan Kara Acked-by: Theodore Ts'o Reviewed-by: Christoph Hellwig Reviewed-by: Matthew Wilcox (Oracle) Cc: Al Viro Cc: Andreas Dilger Cc: Christian Brauner Cc: Joel Becker Cc: Joseph Qi Cc: Luís Henriques Cc: Mark Fasheh Signed-off-by: Andrew Morton

fs: add CONFIG_BUFFER_HEAD

2023-08-02T15:13:09+00:00

Add a new config option that controls building the buffer_head code, and select it from all file systems and stacking drivers that need it. For the block device nodes and alternative iomap based buffered I/O path is provided when buffer_head support is not enabled, and iomap needs a a small tweak to define the IOMAP_F_BUFFER_HEAD flag to 0 to not call into the buffer_head code when it doesn't exist. Otherwise this is just Kconfig and ifdef changes. Signed-off-by: Christoph Hellwig Reviewed-by: Luis Chamberlain Reviewed-by: Johannes Thumshirn Link: https://lore.kernel.org/r/20230801172201.1923299-7-hch@lst.de Signed-off-by: Jens Axboe

fs: rename and move block_page_mkwrite_return

2023-08-02T15:13:09+00:00

block_page_mkwrite_return is neither block nor mkwrite specific, and should not be under CONFIG_BLOCK. Move it to mm.h and rename it to vmf_fs_error. Signed-off-by: Christoph Hellwig Reviewed-by: Luis Chamberlain Reviewed-by: Hannes Reinecke Reviewed-by: Johannes Thumshirn Reviewed-by: Christian Brauner Link: https://lore.kernel.org/r/20230801172201.1923299-3-hch@lst.de Signed-off-by: Jens Axboe

Merge tag 'fs_for_v6.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs

2023-06-29T20:39:51+00:00

Pull misc filesystem updates from Jan Kara: - Rewrite kmap_local() handling in ext2 - Convert ext2 direct IO path to iomap (with some infrastructure tweaks associated with that) - Convert two boilerplate licenses in udf to SPDX identifiers - Other small udf, ext2, and quota fixes and cleanups * tag 'fs_for_v6.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs: udf: Fix uninitialized array access for some pathnames ext2: Drop fragment support quota: fix warning in dqgrab() quota: Properly disable quotas when add_dquot_ref() fails fs: udf: udftime: Replace LGPL boilerplate with SPDX identifier fs: udf: Replace GPL 2.0 boilerplate license notice with SPDX identifier fs: Drop wait_unfrozen wait queue ext2_find_entry()/ext2_dotdot(): callers don't need page_addr anymore ext2_{set_link,delete_entry}(): don't bother with page_addr ext2_put_page(): accept any pointer within the page ext2_get_page(): saner type ext2: use offset_in_page() instead of open-coding it as subtraction ext2_rename(): set_link and delete_entry may fail ext2: Add direct-io trace points ext2: Move direct-io to use iomap ext2: Use generic_buffers_fsync() implementation ext4: Use generic_buffers_fsync_noflush() implementation fs/buffer.c: Add generic_buffers_fsync*() implementation ext2/dax: Fix ext2_setsize when len is page aligned

buffer: convert page_zero_new_buffers() to folio_zero_new_buffers()

2023-06-19T23:19:31+00:00

Most of the callers already have a folio; convert reiserfs_write_end() to have a folio. Removes a couple of hidden calls to compound_head(). Link: https://lkml.kernel.org/r/20230612210141.730128-10-willy@infradead.org Signed-off-by: Matthew Wilcox (Oracle) Cc: Andreas Gruenbacher Cc: Bob Peterson Cc: Hannes Reinecke Cc: Luis Chamberlain Signed-off-by: Andrew Morton