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Kirill Smelkov
wendelin.core
Commits
74d170c6
Commit
74d170c6
authored
Dec 04, 2019
by
Kirill Smelkov
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wcfs/internal/wcfs_virtmem.cpp
wcfs/internal/wcfs_virtmem.cpp
+18
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wcfs/internal/wcfs_virtmem.cpp
View file @
74d170c6
...
...
@@ -86,6 +86,7 @@ struct _Mapping {
}
error
_remmapblk
(
int64_t
blk
,
zodb
::
Tid
at
);
void
remmap_blk
(
int64_t
blk
);
};
...
...
@@ -462,7 +463,23 @@ error _Mapping::_remmapblk(int64_t blk, zodb::Tid at) {
return
nil
;
}
// XXX _Mapping::remmap_blk
// remmap_blk remmaps file[blk] in its place again.
// virtmem calls this to remmap a block after RW dirty page was e.g. discarded.
void
_Mapping
::
remmap_blk
(
int64_t
blk
)
{
_Mapping
&
mmap
=
*
this
;
// XXX locking
if
(
!
(
mmap
.
blk_start
<=
blk
&&
blk
<
mmap
.
blk_stop
()))
panic
(
"remmap_blk: blk out of Mapping range"
);
// blkrev = rev | @head
zodb
::
Tid
blkrev
;
bool
ok
;
tie
(
blkrev
,
ok
)
=
mmap
.
file
->
pinned
.
get
(
blk
);
if
(
!
ok
)
blkrev
=
TidHead
;
mmap
.
_remmapblk
(
blk
,
blkrev
);
// XXX err
}
// XXX _Mapping::unmap
...
...
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