jbd2: add tracepoints which provide per-handle statistics
authorTheodore Ts'o <tytso@mit.edu>
Fri, 8 Feb 2013 18:00:22 +0000 (13:00 -0500)
committerTheodore Ts'o <tytso@mit.edu>
Fri, 8 Feb 2013 18:00:22 +0000 (13:00 -0500)
commit343d9c283c9847da043fda3e76e3197f27b667dd
tree6c37b7cd1d9eeb711fa1aeffee1930e446c406f8
parent078d5039a13dedbd2ed14153a6d764fd75baae07
jbd2: add tracepoints which provide per-handle statistics

Handles which stay open a long time are problematic when it comes time
to close down a transaction so it can be committed.  These tracepoints
will help us determine which ones are the problematic ones, and to
validate whether changes makes things better or worse.

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
fs/jbd2/transaction.c
include/linux/jbd2.h
include/trace/events/jbd2.h