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| author |   Josef Bacik <josef@redhat.com> | 2011-04-11 20:20:11 -0400 |
|---|---|---|
| committer |   Chris Mason <chris.mason@oracle.com> | 2011-04-16 07:10:56 -0400 |
| commit | 6d74119f1a3efad9dc7f79a16c201242324b731f (patch) | |
| tree | faf541835e82e9d56c7474c04b2d785821fe61d3 /tools/perf/scripts/python/syscall-counts.py | |
| parent | Btrfs end_bio_extent_readpage should look for locked bits (diff) | |
| download | linux-dev-6d74119f1a3efad9dc7f79a16c201242324b731f.tar.xz linux-dev-6d74119f1a3efad9dc7f79a16c201242324b731f.zip | |
Btrfs: avoid taking the chunk_mutex in do_chunk_alloc
Everytime we try to allocate disk space we try and see if we can pre-emptively
allocate a chunk, but in the common case we don't allocate anything, so there is
no sense in taking the chunk_mutex at all. So instead if we are allocating a
chunk, mark it in the space_info so we don't get two people trying to allocate
at the same time. Thanks,
Signed-off-by: Josef Bacik <josef@redhat.com>
Reviewed-by: Liu Bo <liubo2009@cn.fujitsu.com>
Diffstat (limited to 'tools/perf/scripts/python/syscall-counts.py')
0 files changed, 0 insertions, 0 deletions