Symbol: sb_is_blkdev_sb
fs/fs-writeback.c
1516
if (sb_is_blkdev_sb(inode->i_sb))
fs/jbd2/commit.c
1006
if (mapping && !sb_is_blkdev_sb(mapping->host->i_sb)) {
mm/backing-dev.c
1209
if (sb_is_blkdev_sb(sb))