ilookup5 — search for an inode in the inode cache
struct inode * ilookup5 ( | struct super_block * | sb, |
| unsigned long | hashval, | |
| int (* | test(struct inode *, void *), | |
| void * | data); |
sbsuper block of file system to search
hashvalhash value (usually inode number) to search for
testcallback used for comparisons between inodes
data
opaque data pointer to pass to test
ilookup5 uses ifind to search for the inode specified by hashval and
data in the inode cache. This is a generalized version of ilookup for
file systems where the inode number is not sufficient for unique
identification of an inode.
If the inode is in the cache, the inode lock is waited upon and the inode is returned with an incremented reference count.
Otherwise NULL is returned.
Note, test is called with the inode_lock held, so can't sleep.