diff options
| author | shunki-fujita <shunki-fujita@cybozu.co.jp> | 2018-04-06 02:20:07 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2018-04-06 07:36:23 +0300 |
| commit | 849cf55963dfd877ad92996195e0fe7218eaf0e9 (patch) | |
| tree | 3c1dab29c873beb615163ff832024b3c9e09752e /include/math-emu | |
| parent | 9421c3e64137ec69e5cf4ed024dc777a09b7779f (diff) | |
| download | linux-849cf55963dfd877ad92996195e0fe7218eaf0e9.tar.xz | |
fs: don't flush pagecache when expanding block device
When changing the size of a block device, its all caches are freed.
It's necessary on shrinking to prevent spurious I/Os to the disappeared
region. However, on expanding, such kind of I/Os doesn't happen.
Similar things can be considered for btrfs filesystem resize and
resize2fs, but they are designed not to drop caches when expanding.
Therefore this patch removes unnecessary cache drop.
Link: http://lkml.kernel.org/r/1521457240-153390-1-git-send-email-shunki-fujita@cybozu.co.jp
Signed-off-by: Shunki Fujita <shunki-fujita@cybozu.co.jp>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Jan Kara <jack@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/math-emu')
0 files changed, 0 insertions, 0 deletions