Theodore Ts'o 42cf3452d5 jbd2: calculate statistics without holding j_state_lock and j_list_lock ... The two hottest locks, and thus the biggest scalability bottlenecks, in the jbd2 layer, are the j_list_lock and j_state_lock. This has inspired some people to do some truly unnatural things[1]. [1] https://www.usenix.org/system/files/conference/fast14/fast14-paper_kang.pdf We don't need to be holding both j_state_lock and j_list_lock while calculating the journal statistics, so move those calculations to the very end of jbd2_journal_commit_transaction. Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>		2014-03-08 19:51:16 -05:00
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checkpoint.c	jbd2: drop checkpoint mutex when waiting in __jbd2_log_wait_for_space()	2013-06-12 22:47:35 -04:00
commit.c	jbd2: calculate statistics without holding j_state_lock and j_list_lock	2014-03-08 19:51:16 -05:00
journal.c	jbd2: don't hold j_state_lock while calling wake_up()	2014-03-08 19:11:36 -05:00
Kconfig	jbd2: remove debug dependency on debug_fs and update Kconfig help text	2013-06-12 23:07:51 -04:00
Makefile	[PATCH] jbd2: rename jbd2 symbols to avoid duplication of jbd symbols	2006-10-11 11:14:15 -07:00
recovery.c	jbd2: rename obsoleted msg JBD->JBD2	2013-12-08 21:14:59 -05:00
revoke.c	jbd2: remove journal_head from descriptor buffers	2013-06-04 12:06:01 -04:00
transaction.c	jbd2: fix use after free in jbd2_journal_start_reserved()	2014-02-17 20:33:01 -05:00