int
ffs_wapbl_stop(struct mount *mp, int force)
{
struct ufsmount *ump = VFSTOUFS(mp);
struct fs *fs = ump->um_fs;
int error;
if (mp->mnt_wapbl) {
KDASSERT(fs->fs_ronly == 0);
/*
* Make sure turning off FS_DOWAPBL is only removed
* as the only change in the final flush since otherwise
* a transaction may reorder writes.
*/
error = wapbl_flush(mp->mnt_wapbl, 1);
if (error && !force)
return error;
if (error && force)
goto forceout;
error = UFS_WAPBL_BEGIN(mp);
if (error && !force)
return error;
if (error && force)
goto forceout;
KASSERT(fs->fs_flags & FS_DOWAPBL);
fs->fs_flags &= ~FS_DOWAPBL;
error = ffs_sbupdate(ump, MNT_WAIT);
KASSERT(error == 0); /* XXX a bit drastic! */
UFS_WAPBL_END(mp);
forceout:
error = wapbl_stop(mp->mnt_wapbl, force);
if (error) {
KASSERT(!force);
fs->fs_flags |= FS_DOWAPBL;
return error;
}
fs->fs_flags &= ~FS_DOWAPBL; /* Repeat in case of forced error */
mp->mnt_wapbl = NULL;
#ifdef WAPBL_DEBUG
printf("%s: disabled logging\n", fs->fs_fsmnt);
#endif
}
return 0;
}
/* ARGSUSED */
int
ffs_full_fsync(struct vnode *vp, int flags)
{
int error, i, uflags;
struct mount *mp;
KASSERT(vp->v_tag == VT_UFS);
KASSERT(VTOI(vp) != NULL);
KASSERT(vp->v_type != VCHR && vp->v_type != VBLK);
error = 0;
uflags = UPDATE_CLOSE | ((flags & FSYNC_WAIT) ? UPDATE_WAIT : 0);
mp = vp->v_mount;
/*
* Flush all dirty data associated with the vnode.
*/
if (vp->v_type == VREG) {
int pflags = PGO_ALLPAGES | PGO_CLEANIT;
if ((flags & FSYNC_WAIT))
pflags |= PGO_SYNCIO;
if (fstrans_getstate(mp) == FSTRANS_SUSPENDING)
pflags |= PGO_FREE;
mutex_enter(vp->v_interlock);
error = VOP_PUTPAGES(vp, 0, 0, pflags);
if (error)
return error;
}
#ifdef WAPBL
if (mp && mp->mnt_wapbl) {
/*
* Don't bother writing out metadata if the syncer is
* making the request. We will let the sync vnode
* write it out in a single burst through a call to
* VFS_SYNC().
*/
if ((flags & (FSYNC_DATAONLY | FSYNC_LAZY)) != 0)
return 0;
if ((VTOI(vp)->i_flag & (IN_ACCESS | IN_CHANGE | IN_UPDATE
| IN_MODIFY | IN_MODIFIED | IN_ACCESSED)) != 0) {
error = UFS_WAPBL_BEGIN(mp);
if (error)
return error;
error = ffs_update(vp, NULL, NULL, uflags);
UFS_WAPBL_END(mp);
}
if (error || (flags & FSYNC_NOLOG) != 0)
return error;
/*
* Don't flush the log if the vnode being flushed
* contains no dirty buffers that could be in the log.
*/
if (!LIST_EMPTY(&vp->v_dirtyblkhd)) {
error = wapbl_flush(mp->mnt_wapbl, 0);
if (error)
return error;
}
if ((flags & FSYNC_WAIT) != 0) {
mutex_enter(vp->v_interlock);
while (vp->v_numoutput != 0)
cv_wait(&vp->v_cv, vp->v_interlock);
mutex_exit(vp->v_interlock);
}
return error;
}
#endif /* WAPBL */
error = vflushbuf(vp, (flags & FSYNC_WAIT) != 0);
if (error == 0)
error = ffs_update(vp, NULL, NULL, uflags);
if (error == 0 && (flags & FSYNC_CACHE) != 0) {
i = 1;
(void)VOP_IOCTL(VTOI(vp)->i_devvp, DIOCCACHESYNC, &i, FWRITE,
kauth_cred_get());
}
return error;
}
int
ffs_wapbl_start(struct mount *mp)
{
struct ufsmount *ump = VFSTOUFS(mp);
struct fs *fs = ump->um_fs;
struct vnode *devvp = ump->um_devvp;
daddr_t off;
size_t count;
size_t blksize;
uint64_t extradata;
int error;
if (mp->mnt_wapbl == NULL) {
if (fs->fs_journal_flags & UFS_WAPBL_FLAGS_CLEAR_LOG) {
/* Clear out any existing journal file */
error = wapbl_remove_log(mp);
if (error != 0)
return error;
}
if (mp->mnt_flag & MNT_LOG) {
KDASSERT(fs->fs_ronly == 0);
/* WAPBL needs UFS2 format super block */
if (ffs_superblock_layout(fs) < 2) {
printf("%s fs superblock in old format, "
"not journaling\n",
VFSTOUFS(mp)->um_fs->fs_fsmnt);
mp->mnt_flag &= ~MNT_LOG;
return EINVAL;
}
error = wapbl_log_position(mp, fs, devvp, &off,
&count, &blksize, &extradata);
if (error)
return error;
error = wapbl_start(&mp->mnt_wapbl, mp, devvp, off,
count, blksize, mp->mnt_wapbl_replay,
ffs_wapbl_sync_metadata,
ffs_wapbl_abort_sync_metadata);
if (error)
return error;
mp->mnt_wapbl_op = &wapbl_ops;
#ifdef WAPBL_DEBUG
printf("%s: enabling logging\n", fs->fs_fsmnt);
#endif
if ((fs->fs_flags & FS_DOWAPBL) == 0) {
UFS_WAPBL_BEGIN(mp);
fs->fs_flags |= FS_DOWAPBL;
error = ffs_sbupdate(ump, MNT_WAIT);
if (error) {
UFS_WAPBL_END(mp);
ffs_wapbl_stop(mp, MNT_FORCE);
return error;
}
UFS_WAPBL_END(mp);
error = wapbl_flush(mp->mnt_wapbl, 1);
if (error) {
ffs_wapbl_stop(mp, MNT_FORCE);
return error;
}
}
} else if (fs->fs_flags & FS_DOWAPBL) {
fs->fs_fmod = 1;
fs->fs_flags &= ~FS_DOWAPBL;
}
}
/*
* It is recommended that you finish replay with logging enabled.
* However, even if logging is not enabled, the remaining log
* replay should be safely recoverable with an fsck, so perform
* it anyway.
*/
if ((fs->fs_ronly == 0) && mp->mnt_wapbl_replay) {
int saveflag = mp->mnt_flag & MNT_RDONLY;
/*
* Make sure MNT_RDONLY is not set so that the inode
* cleanup in ufs_inactive will actually do its work.
*/
mp->mnt_flag &= ~MNT_RDONLY;
ffs_wapbl_replay_finish(mp);
mp->mnt_flag |= saveflag;
KASSERT(fs->fs_ronly == 0);
}
return 0;
}
int
ffs_fsync(void *v)
{
struct vop_fsync_args /* {
struct vnode *a_vp;
kauth_cred_t a_cred;
int a_flags;
off_t a_offlo;
off_t a_offhi;
struct lwp *a_l;
} */ *ap = v;
struct buf *bp;
int num, error, i;
struct indir ia[NIADDR + 1];
int bsize;
daddr_t blk_high;
struct vnode *vp;
struct mount *mp;
vp = ap->a_vp;
mp = vp->v_mount;
fstrans_start(mp, FSTRANS_LAZY);
if ((ap->a_offlo == 0 && ap->a_offhi == 0) || (vp->v_type != VREG)) {
error = ffs_full_fsync(vp, ap->a_flags);
goto out;
}
bsize = mp->mnt_stat.f_iosize;
blk_high = ap->a_offhi / bsize;
if (ap->a_offhi % bsize != 0)
blk_high++;
/*
* First, flush all pages in range.
*/
mutex_enter(vp->v_interlock);
error = VOP_PUTPAGES(vp, trunc_page(ap->a_offlo),
round_page(ap->a_offhi), PGO_CLEANIT |
((ap->a_flags & FSYNC_WAIT) ? PGO_SYNCIO : 0));
if (error) {
goto out;
}
#ifdef WAPBL
KASSERT(vp->v_type == VREG);
if (mp->mnt_wapbl) {
/*
* Don't bother writing out metadata if the syncer is
* making the request. We will let the sync vnode
* write it out in a single burst through a call to
* VFS_SYNC().
*/
if ((ap->a_flags & (FSYNC_DATAONLY | FSYNC_LAZY)) != 0) {
fstrans_done(mp);
return 0;
}
error = 0;
if (vp->v_tag == VT_UFS && VTOI(vp)->i_flag &
(IN_ACCESS | IN_CHANGE | IN_UPDATE | IN_MODIFY |
IN_MODIFIED | IN_ACCESSED)) {
error = UFS_WAPBL_BEGIN(mp);
if (error) {
fstrans_done(mp);
return error;
}
error = ffs_update(vp, NULL, NULL, UPDATE_CLOSE |
((ap->a_flags & FSYNC_WAIT) ? UPDATE_WAIT : 0));
UFS_WAPBL_END(mp);
}
if (error || (ap->a_flags & FSYNC_NOLOG) != 0) {
fstrans_done(mp);
return error;
}
error = wapbl_flush(mp->mnt_wapbl, 0);
fstrans_done(mp);
return error;
}
#endif /* WAPBL */
/*
* Then, flush indirect blocks.
*/
if (blk_high >= NDADDR) {
error = ufs_getlbns(vp, blk_high, ia, &num);
if (error)
goto out;
mutex_enter(&bufcache_lock);
for (i = 0; i < num; i++) {
if ((bp = incore(vp, ia[i].in_lbn)) == NULL)
continue;
if ((bp->b_cflags & BC_BUSY) != 0 ||
(bp->b_oflags & BO_DELWRI) == 0)
continue;
bp->b_cflags |= BC_BUSY | BC_VFLUSH;
mutex_exit(&bufcache_lock);
bawrite(bp);
mutex_enter(&bufcache_lock);
}
mutex_exit(&bufcache_lock);
}
if (ap->a_flags & FSYNC_WAIT) {
mutex_enter(vp->v_interlock);
while (vp->v_numoutput > 0)
cv_wait(&vp->v_cv, vp->v_interlock);
mutex_exit(vp->v_interlock);
}
error = ffs_update(vp, NULL, NULL, UPDATE_CLOSE |
(((ap->a_flags & (FSYNC_WAIT | FSYNC_DATAONLY)) == FSYNC_WAIT)
? UPDATE_WAIT : 0));
if (error == 0 && ap->a_flags & FSYNC_CACHE) {
int l = 0;
VOP_IOCTL(VTOI(vp)->i_devvp, DIOCCACHESYNC, &l, FWRITE,
curlwp->l_cred);
}
out:
fstrans_done(mp);
return error;
}
