NAME¶
vinvalbuf
—
flushes and invalidates all buffers associated with a
vnode
SYNOPSIS¶
#include
<sys/param.h>
#include
<sys/vnode.h>
int
vinvalbuf
(
struct
vnode *vp,
int
flags,
struct
ucred *cred,
int
slpflag,
int
slptimeo);
DESCRIPTION¶
The
vinvalbuf
() function invalidates all of
the buffers associated with the given vnode. This includes buffers on the
clean list and the dirty list. If the
V_SAVE
flag is specified then the buffers
on the dirty list are synced prior to being released. If there is a VM Object
associated with the vnode, it is removed.
Its arguments are:
- vp
- A pointer to the vnode whose buffers will be invalidated.
- flags
- The only supported flag is
V_SAVE
and
it indicates that dirty buffers should be synced with the disk.
- cred
- The user credentials that are used to
VOP_FSYNC(9) buffers if
V_SAVE
is set.
- slpflag
- The slp flag that will be used in the priority of any sleeps in the
function.
- slptimeo
- The timeout for any sleeps in the function.
LOCKS¶
The vnode is assumed to be locked prior to the call and remains locked upon
return.
Giant must be held by prior to the call and
remains locked upon return.
RETURN VALUES¶
A 0 value is returned on success.
PSEUDOCODE¶
vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY);
error = vinvalbuf(devvp, V_SAVE, cred, 0, 0);
VOP_UNLOCK(devvp, 0);
if (error)
return (error);
ERRORS¶
- [
ENOSPC
]
- The file system is full. (With
V_SAVE
)
- [
EDQUOT
]
- Disc quota exceeded. (With
V_SAVE
)
- [
EWOULDBLOCK
]
- Sleep operation timed out. (See
slptimeo)
- [
ERESTART
]
- A signal needs to be delivered and the system call should be restarted.
(With
PCATCH
set in
slpflag)
- [
EINTR
]
- The system has been interrupted by a signal. (With
PCATCH
set in
slpflag)
SEE ALSO¶
tsleep(9),
VOP_FSYNC(9)
AUTHORS¶
This manual page was written by
Chad David
⟨davidc@acns.ab.ca⟩.