D_ADD_CI(9) The Linux VFS D_ADD_CI(9)
NAME d_add_ci - lookup or allocate new dentry with case-exact name
SYNOPSIS struct dentry * d_add_ci(struct dentry * dentry, struct inode * inode, struct qstr * name);
ARGUMENTS dentry the negative dentry that was passed to the parent´s lookup func
inode the inode case-insensitive lookup has found
name the case-exact name to be associated with the returned dentry
DESCRIPTION This is to avoid filling the dcache with case-insensitive names to the same inode, only the actual correct case is stored in the dcache for case-insensitive filesystems.
For a case-insensitive lookup match and if the the case-exact dentry already exists in in the dcache, use it and return it.
If no entry exists with the exact case name, allocate new dentry with the exact case, and return the spliced entry.
COPYRIGHT Kernel Hackers Manual 2.6. July 2015 D_ADD_CI(9)