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author | Zheng Liu <wenqing.lz@taobao.com> | 2014-11-25 16:45:37 (GMT) |
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committer | Theodore Ts'o <tytso@mit.edu> | 2014-11-25 16:45:37 (GMT) |
commit | edaa53cac8fd4b96ed4b8f96c4933158ff2dd337 (patch) | |
tree | f414417ca79fe9678743ea5af75bd5afb70ad8cd /fs/splice.c | |
parent | 2f8e0a7c6c89f850ebd5d6c0b9a08317030d1b89 (diff) | |
download | linux-edaa53cac8fd4b96ed4b8f96c4933158ff2dd337.tar.xz |
ext4: change LRU to round-robin in extent status tree shrinker
In this commit we discard the lru algorithm for inodes with extent
status tree because it takes significant effort to maintain a lru list
in extent status tree shrinker and the shrinker can take a long time to
scan this lru list in order to reclaim some objects.
We replace the lru ordering with a simple round-robin. After that we
never need to keep a lru list. That means that the list needn't be
sorted if the shrinker can not reclaim any objects in the first round.
Cc: Andreas Dilger <adilger.kernel@dilger.ca>
Signed-off-by: Zheng Liu <wenqing.lz@taobao.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Diffstat (limited to 'fs/splice.c')
0 files changed, 0 insertions, 0 deletions