[GIT PULL] ext4 regression fixes for 3.4

From: Theodore Ts'o
Date: Tue Apr 17 2012 - 14:54:34 EST

The following changes since commit 0034102808e0dbbf3a2394b82b1bb40b5778de9e:

Linux 3.4-rc2 (2012-04-07 18:30:41 -0700)

are available in the git repository at:

git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4.git tags/ext4_for_linus

for you to fetch changes up to 57f73c2c89a5d3b2ed87201c8100d1fa989a1a65:

ext4: fix handling of journalled quota options (2012-04-16 18:55:26 -0400)

Ext4 regression fixes for 3.4

This fixes a scalability problem reported by Andi Kleen and Tim Chen;
they were quite secretive about the precise nature of their workload,
but they later admitted that it only showed up when they were using a
large sparse file, so the amount of data I/O that was needed was close
to zero. I'm not sure how realistic this is and it's only a
regression if you consider changes made since 2.6.39 to be a
"regression" vis-a-vis the policy regarding post-merge window bug
fixes, but Linus agreed it was worth fixing, so I'm including it in
this pull request.

This also fixes the journalled quota mount options, which I
accidentally broke while I was cleaning up the mount option handling.

Theodore Ts'o (2):
ext4: address scalability issue by removing extent cache statistics
ext4: fix handling of journalled quota options

fs/ext4/ext4.h | 3 ---
fs/ext4/extents.c | 4 ----
fs/ext4/super.c | 48 +++++++++++++++---------------------------------
3 files changed, 15 insertions(+), 40 deletions(-)
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