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iget5_locked
Langue: en
Version: June 2009 (debian - 07/07/09)
Section: 9 (Appels noyau Linux)
NAME
iget5_locked - obtain an inode from a mounted file systemSYNOPSIS
- 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
iget5_locked uses ifind to search for the inode specified by hashval and data in the inode cache and if present it is returned 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, get_new_inode is called to allocate a new inode and this is returned 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_lock held, so can't sleep.
COPYRIGHT
Contenus ©2006-2024 Benjamin Poulain
Design ©2006-2024 Maxime Vantorre