fs/read_write.c:57: warning: No description found for return value of 'vfs_setpos_cookie'
fs/read_write.c:84: warning: No description found for return value of 'vfs_setpos'
fs/read_write.c:161: warning: No description found for return value of 'generic_file_llseek_size'
fs/read_write.c:198: warning: No description found for return value of 'generic_llseek_cookie'
fs/read_write.c:240: warning: No description found for return value of 'generic_file_llseek'
fs/read_write.c:258: warning: No description found for return value of 'fixed_size_llseek'
fs/read_write.c:277: warning: No description found for return value of 'no_seek_end_llseek'
fs/read_write.c:297: warning: No description found for return value of 'no_seek_end_llseek_size'
fs/read_write.c:320: warning: No description found for return value of 'noop_llseek'
Error: Cannot open file include/linux/sendfile.h
fs/read_write.c:58: warning: No description found for return value of 'vfs_setpos_cookie'
fs/read_write.c:85: warning: No description found for return value of 'vfs_setpos'
fs/read_write.c:162: warning: No description found for return value of 'generic_file_llseek_size'
fs/read_write.c:199: warning: No description found for return value of 'generic_llseek_cookie'
fs/read_write.c:241: warning: No description found for return value of 'generic_file_llseek'
fs/read_write.c:259: warning: No description found for return value of 'fixed_size_llseek'
fs/read_write.c:278: warning: No description found for return value of 'no_seek_end_llseek'
fs/read_write.c:298: warning: No description found for return value of 'no_seek_end_llseek_size'
fs/read_write.c:321: warning: No description found for return value of 'noop_llseek'