|VOP_ADVISE(9)||Kernel Developer's Manual||VOP_ADVISE(9)|
VOP_ADVISE — apply
advice about use of file data
vnode *vp, off_t
start, off_t end,
This call applies advice for a range of a file's data. It is used to implement the posix_fadvise system call.
Its arguments are:
- The vnode of the file.
- The start of the range of file data.
- The end of the range of file data. A value of
OFF_MAXindicates that the advice is to be applied up to the end of the file.
- The type of operation to apply to the file data. Possible values are:
If the start and end offsets are both zero, then the operation should be applied to the entire file. Note that this call is advisory only and may perform the requested operation on a subset of the requested range (including not performing it at all) and still return success.
The file should be unlocked on entry.
Zero is returned if the call is successful, otherwise an appropriate error code is returned.
- An invalid value was given for advice.
|September 26, 2015||Debian|