user/sven/linux.git/include/linux/jbd2.h, branch v6.1.149

ext4, jbd2: add an optimized bmap for the journal inode

2024-08-29T15:30:17Z

[ Upstream commit 62913ae96de747091c4dacd06d158e7729c1a76d ] The generic bmap() function exported by the VFS takes locks and does checks that are not necessary for the journal inode. So allow the file system to set a journal-optimized bmap function in journal->j_bmap. Reported-by: syzbot+9543479984ae9e576000@syzkaller.appspotmail.com Link: https://syzkaller.appspot.com/bug?id=e4aaa78795e490421c79f76ec3679006c8ff4cf0 Signed-off-by: Theodore Ts'o Signed-off-by: Sasha Levin

jbd2: make jbd2_journal_get_max_txn_bufs() internal

2024-08-03T06:49:35Z

commit 4aa99c71e42ad60178c1154ec24e3df9c684fb67 upstream. There's no reason to have jbd2_journal_get_max_txn_bufs() public function. Currently all users are internal and can use journal->j_max_transaction_buffers instead. This saves some unnecessary recomputations of the limit as a bonus which becomes important as this function gets more complex in the following patch. CC: stable@vger.kernel.org Signed-off-by: Jan Kara Reviewed-by: Zhang Yi Link: https://patch.msgid.link/20240624170127.3253-1-jack@suse.cz Signed-off-by: Theodore Ts'o Signed-off-by: Greg Kroah-Hartman

jbd2: increase the journal IO's priority

2024-01-20T10:50:06Z

[ Upstream commit 6a3afb6ac6dfab158ebdd4b87941178f58c8939f ] Current jbd2 only add REQ_SYNC for descriptor block, metadata log buffer, commit buffer and superblock buffer, the submitted IO could be throttled by writeback throttle in block layer, that could lead to priority inversion in some cases. The log IO looks like a kind of high priority metadata IO, so it should not be throttled by WBT like QOS policies in block layer, let's add REQ_SYNC | REQ_IDLE to exempt from writeback throttle, and also add REQ_META together indicates it's a metadata IO. Signed-off-by: Zhang Yi Reviewed-by: Jan Kara Link: https://lore.kernel.org/r/20231129114740.2686201-2-yi.zhang@huaweicloud.com Signed-off-by: Theodore Ts'o Signed-off-by: Sasha Levin

jbd2: fix a race when checking checkpoint buffer busy

2023-08-30T14:10:58Z

[ Upstream commit 46f881b5b1758dc4a35fba4a643c10717d0cf427 ] Before removing checkpoint buffer from the t_checkpoint_list, we have to check both BH_Dirty and BH_Lock bits together to distinguish buffers have not been or were being written back. But __cp_buffer_busy() checks them separately, it first check lock state and then check dirty, the window between these two checks could be raced by writing back procedure, which locks buffer and clears buffer dirty before I/O completes. So it cannot guarantee checkpointing buffers been written back to disk if some error happens later. Finally, it may clean checkpoint transactions and lead to inconsistent filesystem. jbd2_journal_forget() and __journal_try_to_free_buffer() also have the same problem (journal_unmap_buffer() escape from this issue since it's running under the buffer lock), so fix them through introducing a new helper to try holding the buffer lock and remove really clean buffer. Link: https://bugzilla.kernel.org/show_bug.cgi?id=217490 Cc: stable@vger.kernel.org Suggested-by: Jan Kara Signed-off-by: Zhang Yi Reviewed-by: Jan Kara Link: https://lore.kernel.org/r/20230606135928.434610-6-yi.zhang@huaweicloud.com Signed-off-by: Theodore Ts'o Signed-off-by: Sasha Levin

jbd2: remove t_checkpoint_io_list

2023-08-30T14:10:58Z

[ Upstream commit be22255360f80d3af789daad00025171a65424a5 ] Since t_checkpoint_io_list was stop using in jbd2_log_do_checkpoint() now, it's time to remove the whole t_checkpoint_io_list logic. Signed-off-by: Zhang Yi Reviewed-by: Jan Kara Link: https://lore.kernel.org/r/20230606135928.434610-3-yi.zhang@huaweicloud.com Signed-off-by: Theodore Ts'o Stable-dep-of: 46f881b5b175 ("jbd2: fix a race when checking checkpoint buffer busy") Signed-off-by: Sasha Levin

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

2022-08-05T03:13:46Z

Pull ext4 updates from Ted Ts'o: "Add new ioctls to set and get the file system UUID in the ext4 superblock and improved the performance of the online resizing of file systems with bigalloc enabled. Fixed a lot of bugs, in particular for the inline data feature, potential races when creating and deleting inodes with shared extended attribute blocks, and the handling of directory blocks which are corrupted" * tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: (37 commits) ext4: add ioctls to get/set the ext4 superblock uuid ext4: avoid resizing to a partial cluster size ext4: reduce computation of overhead during resize jbd2: fix assertion 'jh->b_frozen_data == NULL' failure when journal aborted ext4: block range must be validated before use in ext4_mb_clear_bb() mbcache: automatically delete entries from cache on freeing mbcache: Remove mb_cache_entry_delete() ext2: avoid deleting xattr block that is being reused ext2: unindent codeblock in ext2_xattr_set() ext2: factor our freeing of xattr block reference ext4: fix race when reusing xattr blocks ext4: unindent codeblock in ext4_xattr_block_set() ext4: remove EA inode entry from mbcache on inode eviction mbcache: add functions to delete entry if unused mbcache: don't reclaim used entries ext4: make sure ext4_append() always allocates new block ext4: check if directory block is within i_size ext4: reflect mb_optimize_scan value in options file ext4: avoid remove directory when directory is corrupted ext4: aligned '*' in comments ...

jbd2: unexport jbd2_log_start_commit()

2022-08-03T03:52:19Z

jbd2_log_start_commit() is not used outside of jbd2 so unexport it. Also make __jbd2_log_start_commit() static when we are at it. Signed-off-by: Jan Kara Reviewed-by: Lukas Czerner Link: https://lore.kernel.org/r/20220608112355.4397-4-jack@suse.cz Signed-off-by: Theodore Ts'o

jbd2: remove unused exports for jbd2 debugging

2022-08-03T03:52:19Z

Jbd2 exports jbd2_journal_enable_debug and __jbd2_debug() depite the first is used only in fs/jbd2/journal.c and the second only within jbd2 code. Remove the pointless exports make jbd2_journal_enable_debug static. Signed-off-by: Jan Kara Reviewed-by: Lukas Czerner Link: https://lore.kernel.org/r/20220608112355.4397-3-jack@suse.cz Signed-off-by: Theodore Ts'o

jbd2: rename jbd_debug() to jbd2_debug()

2022-08-03T03:52:19Z

The name of jbd_debug() is confusing as all functions inside jbd2 have jbd2_ prefix. Rename jbd_debug() to jbd2_debug(). No functional changes. Signed-off-by: Jan Kara Reviewed-by: Lukas Czerner Link: https://lore.kernel.org/r/20220608112355.4397-2-jack@suse.cz Signed-off-by: Theodore Ts'o

fs/jbd2: Fix the documentation of the jbd2_write_superblock() callers

2022-07-14T18:14:32Z

Commit 2a222ca992c3 ("fs: have submit_bh users pass in op and flags separately") renamed the jbd2_write_superblock() 'write_op' argument into 'write_flags'. Propagate this change to the jbd2_write_superblock() callers. Additionally, change the type of 'write_flags' into blk_opf_t. Cc: Mike Christie Cc: Theodore Ts'o Signed-off-by: Bart Van Assche Link: https://lore.kernel.org/r/20220714180729.1065367-57-bvanassche@acm.org Signed-off-by: Jens Axboe