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| author | Chao Yu <yuchao0@huawei.com> | 2016-05-09 19:56:31 +0800 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk@kernel.org> | 2016-05-11 09:56:36 -0700 |
| commit | 6e9619499f53b22ead972e476c0e8341c997d929 (patch) | |
| tree | 0e026991b79762ea8ed14aa4f537e049a6deded6 /Documentation/kobject.txt | |
| parent | 46008c6d42328710f9beaf5c2b47dc92b1cc1a75 (diff) | |
f2fs: support in batch fzero in dnode page
This patch tries to speedup fzero_range by making space preallocation and
address removal of blocks in one dnode page as in batch operation.
In virtual machine, with zram driver:
dd if=/dev/zero of=/mnt/f2fs/file bs=1M count=4096
time xfs_io -f /mnt/f2fs/file -c "fzero 0 4096M"
Before:
real 0m3.276s
user 0m0.008s
sys 0m3.260s
After:
real 0m1.568s
user 0m0.000s
sys 0m1.564s
Signed-off-by: Chao Yu <yuchao0@huawei.com>
[Jaegeuk Kim: consider ENOSPC case]
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'Documentation/kobject.txt')
0 files changed, 0 insertions, 0 deletions