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- stretch 4.9.168-1
| D_OBTAIN_ROOT(9) | The Linux VFS | D_OBTAIN_ROOT(9) |
NAME¶
d_obtain_root - find or allocate a dentry for a given inodeSYNOPSIS¶
struct dentry * d_obtain_root(struct inode * inode);
ARGUMENTS¶
inodeinode to allocate the dentry for
DESCRIPTION¶
Obtain an IS_ROOT dentry for the root of a filesystem.We must ensure that directory inodes only ever have one dentry. If a dentry is found, that is returned instead of allocating a new one.
On successful return, the reference to the inode has been transferred to the dentry. In case of an error the reference on the inode is released. A NULL or IS_ERR inode may be passed in and will be the error will be propagate to the return value, with a NULL inode replaced by ERR_PTR(-ESTALE).
COPYRIGHT¶
| April 2019 | Kernel Hackers Manual 4.9. |