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jbd2, ext4, ocfs2: introduce/use journal callbacks j_submit|finish_inode_data_buffers()

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Introduce journal callbacks to allow different behaviors
for an inode in journal_submit|finish_inode_data_buffers().

The existing users of the current behavior (ext4, ocfs2)
are adapted to use the previously exported functions
that implement the current behavior.

Users are callers of jbd2_journal_inode_ranged_write|wait(),
which adds the inode to the transaction's inode list with
the JI_WRITE|WAIT_DATA flags. Only ext4 and ocfs2 in-tree.

Both CONFIG_EXT4_FS and CONFIG_OCSFS2_FS select CONFIG_JBD2,
which builds fs/jbd2/commit.c and journal.c that define and
export the functions, so we can call directly in ext4/ocfs2.

Signed-off-by: Mauricio Faria de Oliveira <mfo@canonical.com>
Suggested-by: Jan Kara <jack@suse.cz>
Reviewed-by: Jan Kara <jack@suse.cz>
Reviewed-by: Andreas Dilger <adilger@dilger.ca>
Link: https://lore.kernel.org/r/20201006004841.600488-3-mfo@canonical.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
This commit is contained in:
Mauricio Faria de Oliveira
2020-10-05 21:48:39 -03:00
committed by Theodore Ts'o
parent aa3c0c61f6
commit 342af94ec6
4 changed files with 50 additions and 13 deletions
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4
fs/ext4/super.c
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@@ -4752,6 +4752,10 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
set_task_ioprio(sbi->s_journal->j_task, journal_ioprio);
sbi->s_journal->j_commit_callback = ext4_journal_commit_callback;
sbi->s_journal->j_submit_inode_data_buffers =
jbd2_journal_submit_inode_data_buffers;
sbi->s_journal->j_finish_inode_data_buffers =
jbd2_journal_finish_inode_data_buffers;
no_journal:
if (!test_opt(sb, NO_MBCACHE)) {