linux-apfs

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Jan Kara 229309caeb jbd2: Fix forever sleeping process in do_get_write_access()

In do_get_write_access() we wait on BH_Unshadow bit for buffer to get
from shadow state. The waking code in journal_commit_transaction() has
a bug because it does not issue a memory barrier after the buffer is
moved from the shadow state and before wake_up_bit() is called. Thus a
waitqueue check can happen before the buffer is actually moved from
the shadow state and waiting process may never be woken. Fix the
problem by issuing proper barrier.

Reported-by: Tao Ma <boyu.mt@taobao.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>

2011-05-08 19:09:53 -04:00

checkpoint.c

Merge branch 'next' into upstream-merge

2010-10-27 23:44:47 -04:00

commit.c

jbd2: Fix forever sleeping process in do_get_write_access()

2011-05-08 19:09:53 -04:00

journal.c

jbd2: fix fsync() tid wraparound bug

2011-05-01 18:16:26 -04:00

Kconfig

Revert "task_struct: make journal_info conditional"