The patch titled
Subject: jbd2: export jbd2_journal_[grab|put]_journal_head
has been added to the -mm tree. Its filename is
jbd2-export-jbd2_journal__journal_head.patch
This patch should soon appear at
https://ozlabs.org/~akpm/mmots/broken-out/jbd2-export-jbd2_journal__journal_head.patch
and later at
https://ozlabs.org/~akpm/mmotm/broken-out/jbd2-export-jbd2_journal__journal_head.patch
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------------------------------------------------------
From: Joseph Qi <joseph.qi@xxxxxxxxxxxxxxxxx>
Subject: jbd2: export jbd2_journal_[grab|put]_journal_head
Patch series "ocfs2: fix a deadlock case".
This fixes a deadlock case in ocfs2. We firstly export jbd2 symbols
jbd2_journal_[grab|put]_journal_head as preparation and later use them in
ocfs2 insread of jbd_[lock|unlock]_bh_journal_head to fix the deadlock.
This patch (of 2):
This exports symbols jbd2_journal_[grab|put]_journal_head, which will be
used outside modules, e.g. ocfs2.
Link: https://lkml.kernel.org/r/20220121071205.100648-2-joseph.qi@xxxxxxxxxxxxxxxxx
Signed-off-by: Joseph Qi <joseph.qi@xxxxxxxxxxxxxxxxx>
Cc: Mark Fasheh <mark@xxxxxxxxxx>
Cc: Joel Becker <jlbec@xxxxxxxxxxxx>
Cc: Junxiao Bi <junxiao.bi@xxxxxxxxxx>
Cc: Changwei Ge <gechangwei@xxxxxxx>
Cc: Gang He <ghe@xxxxxxxx>
Cc: Jun Piao <piaojun@xxxxxxxxxx>
Cc: Andreas Dilger <adilger.kernel@xxxxxxxxx>
Cc: Gautham Ananthakrishna <gautham.ananthakrishna@xxxxxxxxxx>
Cc: Saeed Mirzamohammadi <saeed.mirzamohammadi@xxxxxxxxxx>
Cc: "Theodore Ts'o" <tytso@xxxxxxx>
Cc: <stable@xxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
fs/jbd2/journal.c | 2 ++
1 file changed, 2 insertions(+)
--- a/fs/jbd2/journal.c~jbd2-export-jbd2_journal__journal_head
+++ a/fs/jbd2/journal.c
@@ -2972,6 +2972,7 @@ struct journal_head *jbd2_journal_grab_j
jbd_unlock_bh_journal_head(bh);
return jh;
}
+EXPORT_SYMBOL(jbd2_journal_grab_journal_head);
static void __journal_remove_journal_head(struct buffer_head *bh)
{
@@ -3024,6 +3025,7 @@ void jbd2_journal_put_journal_head(struc
jbd_unlock_bh_journal_head(bh);
}
}
+EXPORT_SYMBOL(jbd2_journal_put_journal_head);
/*
* Initialize jbd inode head
_
Patches currently in -mm which might be from joseph.qi@xxxxxxxxxxxxxxxxx are
jbd2-export-jbd2_journal__journal_head.patch
ocfs2-fix-a-deadlock-when-commit-trans.patch
