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| author | Jaegeuk Kim | 2015-03-14 05:44:36 +0100 |
|---|---|---|
| committer | Jaegeuk Kim | 2015-04-11 00:08:45 +0200 |
| commit | 78373b7319abdf15050af5b1632c4c8b8b398f33 (patch) | |
| tree | e4d8c016400ea53cd0a8a45984008b8f2c383190 /fs/f2fs/data.c | |
| parent | f2fs: set buffer_new when new blocks are allocated (diff) | |
| download | kernel-qcow2-linux-78373b7319abdf15050af5b1632c4c8b8b398f33.tar.gz kernel-qcow2-linux-78373b7319abdf15050af5b1632c4c8b8b398f33.tar.xz kernel-qcow2-linux-78373b7319abdf15050af5b1632c4c8b8b398f33.zip | |
f2fs: enhance multi-threads performance
Previously, f2fs_write_data_pages has a mutex, sbi->writepages, to serialize
data writes to maximize write bandwidth, while sacrificing multi-threads
performance.
Practically, however, multi-threads environment is much more important for
users. So this patch tries to remove the mutex.
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'fs/f2fs/data.c')
| -rw-r--r-- | fs/f2fs/data.c | 7 |
1 files changed, 0 insertions, 7 deletions
diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c index 4a416e74bb2a..f0a18a005bda 100644 --- a/fs/f2fs/data.c +++ b/fs/f2fs/data.c @@ -1397,7 +1397,6 @@ static int f2fs_write_data_pages(struct address_space *mapping, { struct inode *inode = mapping->host; struct f2fs_sb_info *sbi = F2FS_I_SB(inode); - bool locked = false; int ret; long diff; @@ -1418,13 +1417,7 @@ static int f2fs_write_data_pages(struct address_space *mapping, diff = nr_pages_to_write(sbi, DATA, wbc); - if (!S_ISDIR(inode->i_mode)) { - mutex_lock(&sbi->writepages); - locked = true; - } ret = write_cache_pages(mapping, wbc, __f2fs_writepage, mapping); - if (locked) - mutex_unlock(&sbi->writepages); f2fs_submit_merged_bio(sbi, DATA, WRITE); |