IGET5_LOCKED(9) The Linux VFS IGET5_LOCKED(9)
NAME
iget5_locked - obtain an inode from a mounted file system
SYNOPSIS
struct inode * iget5_locked(struct super_block * sb, unsigned long hashval, int (*test) (struct inode *, void *),
int (*set) (struct inode *, void *), void * data);
ARGUMENTS
sb
super block of file system
hashval
hash value (usually inode number) to get
test
callback used for comparisons between inodes
set
callback used to initialize a new struct inode
data
opaque data pointer to pass to test and set
DESCRIPTION
Search for the inode specified by hashval and data in the inode cache, and if present it is return it with an increased reference count.
This is a generalized version of iget_locked for file systems where the inode number is not sufficient for unique identification of an
inode.
If the inode is not in cache, allocate a new inode and return it locked, hashed, and with the I_NEW flag set. The file system gets to fill
it in before unlocking it via unlock_new_inode.
Note both test and set are called with the inode_hash_lock held, so can't sleep.
COPYRIGHT
Kernel Hackers Manual 3.10 June 2014 IGET5_LOCKED(9)
