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| author | Namjae Jeon <linkinjeon@gmail.com> | 2012-08-31 12:49:07 -0400 |
|---|---|---|
| committer | Jan Kara <jack@suse.cz> | 2012-09-04 00:06:26 +0200 |
| commit | 378b8e1ad18e7c97832aa3771e295153c4cd2a55 (patch) | |
| tree | c1de0d655ff0fb49ea27459a6a791f0f8ce47563 /fs/udf | |
| parent | e4230108547766f4e105a62c45f3724309106f91 (diff) | |
| download | kernel-common-378b8e1ad18e7c97832aa3771e295153c4cd2a55.tar.gz kernel-common-378b8e1ad18e7c97832aa3771e295153c4cd2a55.tar.bz2 kernel-common-378b8e1ad18e7c97832aa3771e295153c4cd2a55.zip | |
udf: add writepages support for udf
Use mpage_writepages() instead of multiple calls to udf_writepage()
to make performance higher.
*Write Speed with writepage() =
RecSize ReadSpeed WriteSpeed RanReadSpeed RanWriteSpeed
10485760 0.00MB/sec 8.56MB/sec 0.00MB/sec 8.20MB/sec
1048576 0.00MB/sec 8.57MB/sec 0.00MB/sec 6.42MB/sec
524288 0.00MB/sec 8.59MB/sec 0.00MB/sec 5.24MB/sec
262144 0.00MB/sec 8.59MB/sec 0.00MB/sec 4.17MB/sec
131072 0.00MB/sec 8.53MB/sec 0.00MB/sec 3.32MB/sec
65536 0.00MB/sec 8.49MB/sec 0.00MB/sec 2.31MB/sec
*Write Speed with writepages()
RecSize ReadSpeed WriteSpeed RanReadSpeed RanWriteSpeed
10485760 0.00MB/sec 9.88MB/sec 0.00MB/sec 9.60MB/sec
1048576 0.00MB/sec 9.95MB/sec 0.00MB/sec 7.52MB/sec
524288 0.00MB/sec 9.98MB/sec 0.00MB/sec 6.16MB/sec
262144 0.00MB/sec 9.90MB/sec 0.00MB/sec 4.98MB/sec
131072 0.00MB/sec 9.89MB/sec 0.00MB/sec 3.78MB/sec
65536 0.00MB/sec 9.81MB/sec 0.00MB/sec 2.50MB/sec
There is about 1.4MB/sec speed improvement over 8.5MB/sec,
which comes out around 16% improvement.
Signed-off-by: Namjae Jeon <linkinjeon@gmail.com>
Signed-off-by: Ashish Sangwan <ashish.sangwan2@gmail.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Diffstat (limited to 'fs/udf')
| -rw-r--r-- | fs/udf/inode.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/fs/udf/inode.c b/fs/udf/inode.c index aa233469b3c1..1a0588e77a2f 100644 --- a/fs/udf/inode.c +++ b/fs/udf/inode.c @@ -100,6 +100,12 @@ static int udf_writepage(struct page *page, struct writeback_control *wbc) return block_write_full_page(page, udf_get_block, wbc); } +static int udf_writepages(struct address_space *mapping, + struct writeback_control *wbc) +{ + return mpage_writepages(mapping, wbc, udf_get_block); +} + static int udf_readpage(struct file *file, struct page *page) { return mpage_readpage(page, udf_get_block); @@ -145,6 +151,7 @@ const struct address_space_operations udf_aops = { .readpage = udf_readpage, .readpages = udf_readpages, .writepage = udf_writepage, + .writepages = udf_writepages, .write_begin = udf_write_begin, .write_end = generic_write_end, .bmap = udf_bmap, |