Jan Kara 2dcba4781f ext4: get rid of EXT4_GET_BLOCKS_NO_LOCK flag ... When dioread_nolock mode is enabled, we grab i_data_sem in ext4_ext_direct_IO() and therefore we need to instruct _ext4_get_block() not to grab i_data_sem again using EXT4_GET_BLOCKS_NO_LOCK. However holding i_data_sem over overwrite direct IO isn't needed these days. We have exclusion against truncate / hole punching because we increase i_dio_count under i_mutex in ext4_ext_direct_IO() so once ext4_file_write_iter() verifies blocks are allocated & written, they are guaranteed to stay so during the whole direct IO even after we drop i_mutex. So we can just remove this locking abuse and the no longer necessary EXT4_GET_BLOCKS_NO_LOCK flag. Signed-off-by: Jan Kara <jack@suse.com> Signed-off-by: Theodore Ts'o <tytso@mit.edu>		2015-12-07 15:04:57 -05:00
..
events	ext4: get rid of EXT4_GET_BLOCKS_NO_LOCK flag	2015-12-07 15:04:57 -05:00
define_trace.h	tracing: Allow disabling compilation of specific trace systems	2015-10-20 21:55:44 -04:00
perf.h	tracing: Move non perf code out of perf.h	2015-09-23 09:31:34 -04:00
syscall.h	tracing: Rename ftrace_event_{call,class} to trace_event_{call,class}	2015-05-13 14:06:10 -04:00
trace_events.h	tracing: Move non perf code out of perf.h	2015-09-23 09:31:34 -04:00