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reiserfs: Make cancel_old_flush() reliable

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Currently canceling of delayed work that flushes old data using
cancel_old_flush() does not prevent work from being requeued. Thus
in theory new work can be queued after cancel_old_flush() from
reiserfs_freeze() has run. This will become larger problem once
flush_old_commits() can requeue the work itself.

Fix the problem by recording in sbi->work_queue that flushing work is
canceled and should not be requeued.

Signed-off-by: Jan Kara <jack@suse.cz>
This commit is contained in:
Jan Kara
2017-04-05 14:09:48 +02:00
parent 6554766150
commit 71b0576bdb
3 changed files with 17 additions and 7 deletions
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fs/reiserfs/reiserfs.h
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@@ -2948,6 +2948,7 @@ int reiserfs_allocate_list_bitmaps(struct super_block *s,
struct reiserfs_list_bitmap *, unsigned int);
void reiserfs_schedule_old_flush(struct super_block *s);
void reiserfs_cancel_old_flush(struct super_block *s);
void add_save_link(struct reiserfs_transaction_handle *th,
struct inode *inode, int truncate);
int remove_save_link(struct inode *inode, int truncate);