Chris Mason f9efa9c784 Btrfs: Reduce contention on the root node ...

This calls unlock_up sooner in btrfs_search_slot in order to decrease the
amount of work done with the higher level tree locks held.

Also, it changes btrfs_tree_lock to spin for a big against the page lock
before scheduling.  This makes a big difference in context switch rate under
highly contended workloads.

Longer term, a better locking structure is needed than the page lock.

Signed-off-by: Chris Mason <chris.mason@oracle.com>

2008-09-25 11:04:04 -04:00

..

acl.c

Btrfs: Include sched.h in the acl code for current (fixes compile on 2.6.23)

2008-09-25 11:03:59 -04:00

async-thread.c

Btrfs: Worker thread optimizations

2008-09-25 11:04:03 -04:00

async-thread.h

Btrfs: Worker thread optimizations

2008-09-25 11:04:03 -04:00

bit-radix.c

Btrfs: trivial include fixups

2007-07-11 10:00:37 -04:00

bit-radix.h

Btrfs: add GPLv2

2007-06-12 09:07:21 -04:00

btrfs_inode.h

Btrfs: Add a per-inode csum mutex to avoid races creating csum items

2008-09-25 11:04:04 -04:00

compat.h

Btrfs: Add workaround for AppArmor changing remove_suid()

2008-09-25 11:04:02 -04:00

COPYING

Btrfs: add GPLv2

2007-06-12 09:07:21 -04:00

crc32c.h

Btrfs: Endianess bug fix for v0.13 with kernels

2008-09-25 11:04:01 -04:00

ctree.c

Btrfs: Reduce contention on the root node

2008-09-25 11:04:04 -04:00

ctree.h

Btrfs: Online btree defragmentation fixes

2008-09-25 11:04:04 -04:00

dir-item.c

Btrfs: unaligned access fixes

2008-09-25 11:04:00 -04:00

disk-io.c

Btrfs: Online btree defragmentation fixes

2008-09-25 11:04:04 -04:00

disk-io.h

Btrfs: Online btree defragmentation fixes

2008-09-25 11:04:04 -04:00

extent_io.c

Btrfs: Change find_extent_buffer to use TestSetPageLocked

2008-09-25 11:04:03 -04:00

extent_io.h

Btrfs: Handle write errors on raid1 and raid10

2008-09-25 11:04:03 -04:00

extent_map.c

Btrfs: kerneldoc comments for extent_map.c

2008-09-25 11:04:03 -04:00

extent_map.h

Btrfs: Split the extent_map code into two parts

2008-09-25 11:03:59 -04:00

extent-tree.c

Btrfs: Online btree defragmentation fixes

2008-09-25 11:04:04 -04:00

file-item.c

Btrfs: Clone file data ioctl

2008-09-25 11:04:02 -04:00

file.c

Btrfs: Add a per-inode csum mutex to avoid races creating csum items

2008-09-25 11:04:04 -04:00

hash.c

btrfs-progs: Stop stomping on 'name' input parameter

2008-09-25 11:04:01 -04:00

hash.h

Btrfs: unaligned access fixes

2008-09-25 11:04:00 -04:00

inode-item.c

Btrfs: Add back pointers from the inode to the directory that references it

2008-09-25 11:03:58 -04:00

inode-map.c

Btrfs: Replace the big fs_mutex with a collection of other locks

2008-09-25 11:04:03 -04:00

inode.c

Btrfs: Add a per-inode csum mutex to avoid races creating csum items

2008-09-25 11:04:04 -04:00

INSTALL

Btrfs: Documentation update

2007-06-22 14:49:31 -04:00

ioctl.c

Add btrfs_end_transaction_throttle to force writers to wait for pending commits

2008-09-25 11:04:03 -04:00

ioctl.h

Btrfs: transaction ioctls

2008-09-25 11:04:03 -04:00

locking.c

Btrfs: Reduce contention on the root node

2008-09-25 11:04:04 -04:00

locking.h

Btrfs: Start btree concurrency work.

2008-09-25 11:04:03 -04:00

Makefile

Btrfs: Start btree concurrency work.

2008-09-25 11:04:03 -04:00

ordered-data.c

Btrfs: Add a per-inode csum mutex to avoid races creating csum items

2008-09-25 11:04:04 -04:00

ordered-data.h

Fix btrfs_del_ordered_inode to allow forcing the drop during unlinks

2008-09-25 11:04:03 -04:00

print-tree.c

Btrfs: Pass down the expected generation number when reading tree blocks

2008-09-25 11:04:03 -04:00

print-tree.h

Btrfs: Create extent_buffer interface for large blocksizes

2008-09-25 11:03:56 -04:00

root-tree.c

Btrfs: Properly find the root for snapshotted blocks during chunk relocation

2008-09-25 11:04:02 -04:00

struct-funcs.c

Btrfs: unaligned access fixes

2008-09-25 11:04:00 -04:00

super.c

Btrfs: Online btree defragmentation fixes

2008-09-25 11:04:04 -04:00

sysfs.c

Btrfs: Disable sysfs files on older kernels

2008-09-25 11:04:00 -04:00

TODO

Btrfs: add GPLv2

2007-06-12 09:07:21 -04:00

transaction.c

Btrfs: Online btree defragmentation fixes

2008-09-25 11:04:04 -04:00

transaction.h

Btrfs: Online btree defragmentation fixes

2008-09-25 11:04:04 -04:00

tree-defrag.c

Btrfs: Online btree defragmentation fixes

2008-09-25 11:04:04 -04:00

volumes.c

Btrfs: Replace the transaction work queue with kthreads

2008-09-25 11:04:03 -04:00

volumes.h

Btrfs: Add async worker threads for pre and post IO checksumming

2008-09-25 11:04:03 -04:00

xattr.c

Btrfs: Replace the big fs_mutex with a collection of other locks

2008-09-25 11:04:03 -04:00

xattr.h

xattr support for btrfs

2008-09-25 11:03:57 -04:00