Writeback dirty inodes from given super_block
void writeback_inodes_sb_nr(struct super_block * sb, unsigned long nr, enum wb_reason reason);
sb
the superblock
nr
the number of pages to write
reason
reason why some writeback work initiated
Start writeback on some inodes on this super_block. No guarantees are made on how many (if any) will be written, and this function does not wait for IO completion of submitted IO.