NAME
writeback_inodes_sb_if_idle - start writeback if none underway
SYNOPSIS
int writeback_inodes_sb_if_idle(struct super_block * sb, enum wb_reason reason);
ARGUMENTS
sb
the superblock
reason
reason why some writeback work was initiated
DESCRIPTION
Invoke writeback_inodes_sb if no writeback is currently underway. Returns 1 if writeback was started, 0 if not.