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| author |   Dave Chinner <dchinner@redhat.com> | 2010-10-23 05:03:02 -0400 |
|---|---|---|
| committer |   Al Viro <viro@zeniv.linux.org.uk> | 2010-10-25 21:26:09 -0400 |
| commit | cffbc8aa334f55c9ed42d25202eb3ebf3a97c195 (patch) | |
| tree | dab046695754e2cec1a7ab7a64b236e976d94360 /include/linux/writeback.h | |
| parent | vfs: fix infinite loop caused by clone_mnt race (diff) | |
| download | linux-dev-cffbc8aa334f55c9ed42d25202eb3ebf3a97c195.tar.xz linux-dev-cffbc8aa334f55c9ed42d25202eb3ebf3a97c195.zip | |
fs: Convert nr_inodes and nr_unused to per-cpu counters
The number of inodes allocated does not need to be tied to the
addition or removal of an inode to/from a list. If we are not tied
to a list lock, we could update the counters when inodes are
initialised or destroyed, but to do that we need to convert the
counters to be per-cpu (i.e. independent of a lock). This means that
we have the freedom to change the list/locking implementation
without needing to care about the counters.
Based on a patch originally from Eric Dumazet.
[AV: cleaned up a bit, fixed build breakage on weird configs
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to '')
0 files changed, 0 insertions, 0 deletions