From 6b12367da22f1c9d4d0073f8d802f616c735f95b Mon Sep 17 00:00:00 2001 From: Jaegeuk Kim Date: Mon, 22 Jun 2020 23:01:05 -0700 Subject: f2fs: avoid readahead race condition MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit If two readahead threads having same offset enter in readpages, every read IOs are split and issued to the disk which giving lower bandwidth. This patch tries to avoid redundant readahead calls. Fixes one build error reported by Randy. Fix build error when F2FS_FS_COMPRESSION is not set/enabled. This label is needed in either case. ../fs/f2fs/data.c: In function ‘f2fs_mpage_readpages’: ../fs/f2fs/data.c:2327:5: error: label ‘next_page’ used but not defined goto next_page; Reviewed-by: Chao Yu Signed-off-by: Jaegeuk Kim --- fs/f2fs/super.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'fs/f2fs/super.c') diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c index 732652205737..80cb7cd358f8 100644 --- a/fs/f2fs/super.c +++ b/fs/f2fs/super.c @@ -1015,6 +1015,8 @@ static struct inode *f2fs_alloc_inode(struct super_block *sb) /* Will be used by directory only */ fi->i_dir_level = F2FS_SB(sb)->dir_level; + fi->ra_offset = -1; + return &fi->vfs_inode; } -- cgit v1.2.3