tree 6c37b7cd1d9eeb711fa1aeffee1930e446c406f8
parent 078d5039a13dedbd2ed14153a6d764fd75baae07
author Theodore Ts'o <tytso@mit.edu> 1360346422 -0500
committer Theodore Ts'o <tytso@mit.edu> 1360346422 -0500

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>