I am not clear with some C syntax.
I looked at a file
fs.h
there I have 2-3 doubts
1) A variable NR_OPEN is used what is this used for?
2) const struct iovec *iov;
What is the meaning of const before struct here.
3) Some places in the comments I see atomic operations.
What is that?
4) blkcnt_t,loff_t,seqcount,spinlock,__u32 are defined in structure inode.
What are these.