Jan Kara fe1e8db598 jbd2: fix race in t_outstanding_credits update in jbd2_journal_extend() ... jbd2_journal_extend() first checked whether transaction can accept extending handle with more credits and then added credits to t_outstanding_credits. This can race with start_this_handle() adding another handle to a transaction and thus overbooking a transaction. Make jbd2_journal_extend() use atomic_add_return() to close the race. Reviewed-by: Zheng Liu <wenqing.lz@taobao.com> Signed-off-by: Jan Kara <jack@suse.cz> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>		2013-06-04 12:22:15 -04:00
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checkpoint.c	jbd2: cleanup needed free block estimates when starting a transaction	2013-06-04 12:12:57 -04:00
commit.c	jbd2: refine waiting for shadow buffers	2013-06-04 12:08:56 -04:00
journal.c	jbd2: cleanup needed free block estimates when starting a transaction	2013-06-04 12:12:57 -04:00
Kconfig	jbd2: Grab a reference to the crc32c driver if necessary	2012-05-27 07:50:56 -04:00
Makefile
recovery.c	jbd2: fix block tag checksum verification brokenness	2013-05-28 07:31:59 -04:00
revoke.c	jbd2: remove journal_head from descriptor buffers	2013-06-04 12:06:01 -04:00
transaction.c	jbd2: fix race in t_outstanding_credits update in jbd2_journal_extend()	2013-06-04 12:22:15 -04:00