jbd2: export jbd2_journal_[un]register_shrinker()

zhangyi089 · tytso · commit 16aa4c9a1fbe · 2021-06-30T11:05:00.000-04:00
Export jbd2_journal_[un]register_shrinker() to fix this error when ext4 is built as a module: ERROR: modpost: "jbd2_journal_unregister_shrinker" undefined! ERROR: modpost: "jbd2_journal_register_shrinker" undefined! Fixes: 4ba3fcd ("jbd2,ext4: add a shrinker to release checkpointed buffers") Signed-off-by: Zhang Yi <yi.zhang@huawei.com> Reviewed-by: Jan Kara <jack@suse.cz> Link: https://lore.kernel.org/r/20210630083638.140218-1-yi.zhang@huawei.com Signed-off-by: Theodore Ts'o <tytso@mit.edu>
diff --git a/fs/jbd2/journal.c b/fs/jbd2/journal.c
@@ -2122,6 +2122,7 @@ int jbd2_journal_register_shrinker(journal_t *journal)
 
 	return 0;
 }
+EXPORT_SYMBOL(jbd2_journal_register_shrinker);
 
 /**
  * jbd2_journal_unregister_shrinker()
@@ -2134,6 +2135,7 @@ void jbd2_journal_unregister_shrinker(journal_t *journal)
 	percpu_counter_destroy(&journal->j_jh_shrink_count);
 	unregister_shrinker(&journal->j_shrinker);
 }
+EXPORT_SYMBOL(jbd2_journal_unregister_shrinker);
 
 /**
  * jbd2_journal_destroy() - Release a journal_t structure.

Original file line number	Diff line number	Diff line change
`@@ -2122,6 +2122,7 @@ int jbd2_journal_register_shrinker(journal_t *journal)`
`2122`	`2122`
`2123`	`2123`	`return 0;`
`2124`	`2124`	`}`
	`2125`	`+EXPORT_SYMBOL(jbd2_journal_register_shrinker);`
`2125`	`2126`
`2126`	`2127`	`/**`
`2127`	`2128`	`* jbd2_journal_unregister_shrinker()`
`@@ -2134,6 +2135,7 @@ void jbd2_journal_unregister_shrinker(journal_t *journal)`
`2134`	`2135`	`percpu_counter_destroy(&journal->j_jh_shrink_count);`
`2135`	`2136`	`unregister_shrinker(&journal->j_shrinker);`
`2136`	`2137`	`}`
	`2138`	`+EXPORT_SYMBOL(jbd2_journal_unregister_shrinker);`
`2137`	`2139`
`2138`	`2140`	`/**`
`2139`	`2141`	`* jbd2_journal_destroy() - Release a journal_t structure.`