CHECK_SUBMOUNTS_AND_(9) The Linux VFS CHECK_SUBMOUNTS_AND_(9)NAME
check_submounts_and_drop - prune dcache, check for submounts and drop
int check_submounts_and_drop(struct dentry * dentry);
dentry to prune and drop
All done as a single atomic operation relative to has_unlinked_ancestor. Returns 0 if successfully unhashed parent. If there were submounts
then return -EBUSY.
COPYRIGHT Kernel Hackers Manual 3.10 June 2014 CHECK_SUBMOUNTS_AND_(9)
Check Out this Related Man Page
DEBUGFS_CREATE_U16(9) The debugfs filesystem DEBUGFS_CREATE_U16(9)NAME
debugfs_create_u16 - create a debugfs file that is used to read and write an unsigned 16-bit value
struct dentry * debugfs_create_u16(const char * name, umode_t mode, struct dentry * parent, u16 * value);
a pointer to a string containing the name of the file to create.
the permission that the file should have
a pointer to the parent dentry for this file. This should be a directory dentry if set. If this parameter is NULL, then the file will
be created in the root of the debugfs filesystem.
a pointer to the variable that the file should read to and write from.
This function creates a file in debugfs with the given name that contains the value of the variable value. If the mode variable is so set,
it can be read from, and written to.
This function will return a pointer to a dentry if it succeeds. This pointer must be passed to the debugfs_remove function when the file is
to be removed (no automatic cleanup happens if your module is unloaded, you are responsible here.) If an error occurs, NULL will be
If debugfs is not enabled in the kernel, the value -ENODEV will be returned. It is not wise to check for this value, but rather, check for
NULL or !NULL instead as to eliminate the need for #ifdef in the calling code.
COPYRIGHT Kernel Hackers Manual 3.10 June 2014 DEBUGFS_CREATE_U16(9)
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