1VFS_LINK(9)                      The Linux VFS                     VFS_LINK(9)
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NAME

6       vfs_link - create a new link
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SYNOPSIS

9       int vfs_link(struct dentry * old_dentry, struct inode * dir,
10                    struct dentry * new_dentry,
11                    struct inode ** delegated_inode);
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ARGUMENTS

14       old_dentry
15           object to be linked
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17       dir
18           new parent
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20       new_dentry
21           where to create the new link
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23       delegated_inode
24           returns inode needing a delegation break
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DESCRIPTION

27       The caller must hold dir->i_mutex
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29       If vfs_link discovers a delegation on the to-be-linked file in need of
30       breaking, it will return -EWOULDBLOCK and return a reference to the
31       inode in delegated_inode. The caller should then break the delegation
32       and retry. Because breaking a delegation may take a long time, the
33       caller should drop the i_mutex before doing so.
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35       Alternatively, a caller may pass NULL for delegated_inode. This may be
36       appropriate for callers that expect the underlying filesystem not to be
37       NFS exported.
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40Kernel Hackers Manual 3.10         June 2019                       VFS_LINK(9)
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