S_SWAPFILE        191 include/linux/fs.h #define IS_SWAPFILE(inode)	((inode)->i_flags & S_SWAPFILE)
S_SWAPFILE       1334 mm/swapfile.c  		inode->i_flags &= ~S_SWAPFILE;
S_SWAPFILE       1730 mm/swapfile.c  			inode->i_flags |= S_SWAPFILE;