Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
dm snapshot: rename struct exception_store
Rename struct exception_store to dm_exception_store.
Signed-off-by: Jonathan Brassow <jbrassow@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
authored by
Jonathan Brassow
and committed by
Alasdair G Kergon
1ae25f9c
aea53d92
+14
-14
drivers/md/dm-exception-store.c
+14
-14
drivers/md/dm-exception-store.c
···
462
return 0;
463
}
464
465
-
static struct pstore *get_info(struct exception_store *store)
466
{
467
return (struct pstore *) store->context;
468
}
469
470
-
static void persistent_fraction_full(struct exception_store *store,
471
sector_t *numerator, sector_t *denominator)
472
{
473
*numerator = get_info(store)->next_free * store->snap->chunk_size;
474
*denominator = get_dev_size(store->snap->cow->bdev);
475
}
476
477
-
static void persistent_destroy(struct exception_store *store)
478
{
479
struct pstore *ps = get_info(store);
480
···
485
kfree(ps);
486
}
487
488
-
static int persistent_read_metadata(struct exception_store *store)
489
{
490
int r, uninitialized_var(new_snapshot);
491
struct pstore *ps = get_info(store);
···
551
return 0;
552
}
553
554
-
static int persistent_prepare(struct exception_store *store,
555
struct dm_snap_exception *e)
556
{
557
struct pstore *ps = get_info(store);
···
578
return 0;
579
}
580
581
-
static void persistent_commit(struct exception_store *store,
582
struct dm_snap_exception *e,
583
void (*callback) (void *, int success),
584
void *callback_context)
···
640
ps->callback_count = 0;
641
}
642
643
-
static void persistent_drop(struct exception_store *store)
644
{
645
struct pstore *ps = get_info(store);
646
···
649
DMWARN("write header failed");
650
}
651
652
-
int dm_create_persistent(struct exception_store *store)
653
{
654
struct pstore *ps;
655
···
694
sector_t next_free;
695
};
696
697
-
static void transient_destroy(struct exception_store *store)
698
{
699
kfree(store->context);
700
}
701
702
-
static int transient_read_metadata(struct exception_store *store)
703
{
704
return 0;
705
}
706
707
-
static int transient_prepare(struct exception_store *store,
708
struct dm_snap_exception *e)
709
{
710
struct transient_c *tc = (struct transient_c *) store->context;
···
719
return 0;
720
}
721
722
-
static void transient_commit(struct exception_store *store,
723
struct dm_snap_exception *e,
724
void (*callback) (void *, int success),
725
void *callback_context)
···
728
callback(callback_context, 1);
729
}
730
731
-
static void transient_fraction_full(struct exception_store *store,
732
sector_t *numerator, sector_t *denominator)
733
{
734
*numerator = ((struct transient_c *) store->context)->next_free;
735
*denominator = get_dev_size(store->snap->cow->bdev);
736
}
737
738
-
int dm_create_transient(struct exception_store *store)
739
{
740
struct transient_c *tc;
741
···
462
return 0;
463
}
464
465
+
static struct pstore *get_info(struct dm_exception_store *store)
466
{
467
return (struct pstore *) store->context;
468
}
469
470
+
static void persistent_fraction_full(struct dm_exception_store *store,
471
sector_t *numerator, sector_t *denominator)
472
{
473
*numerator = get_info(store)->next_free * store->snap->chunk_size;
474
*denominator = get_dev_size(store->snap->cow->bdev);
475
}
476
477
+
static void persistent_destroy(struct dm_exception_store *store)
478
{
479
struct pstore *ps = get_info(store);
480
···
485
kfree(ps);
486
}
487
488
+
static int persistent_read_metadata(struct dm_exception_store *store)
489
{
490
int r, uninitialized_var(new_snapshot);
491
struct pstore *ps = get_info(store);
···
551
return 0;
552
}
553
554
+
static int persistent_prepare(struct dm_exception_store *store,
555
struct dm_snap_exception *e)
556
{
557
struct pstore *ps = get_info(store);
···
578
return 0;
579
}
580
581
+
static void persistent_commit(struct dm_exception_store *store,
582
struct dm_snap_exception *e,
583
void (*callback) (void *, int success),
584
void *callback_context)
···
640
ps->callback_count = 0;
641
}
642
643
+
static void persistent_drop(struct dm_exception_store *store)
644
{
645
struct pstore *ps = get_info(store);
646
···
649
DMWARN("write header failed");
650
}
651
652
+
int dm_create_persistent(struct dm_exception_store *store)
653
{
654
struct pstore *ps;
655
···
694
sector_t next_free;
695
};
696
697
+
static void transient_destroy(struct dm_exception_store *store)
698
{
699
kfree(store->context);
700
}
701
702
+
static int transient_read_metadata(struct dm_exception_store *store)
703
{
704
return 0;
705
}
706
707
+
static int transient_prepare(struct dm_exception_store *store,
708
struct dm_snap_exception *e)
709
{
710
struct transient_c *tc = (struct transient_c *) store->context;
···
719
return 0;
720
}
721
722
+
static void transient_commit(struct dm_exception_store *store,
723
struct dm_snap_exception *e,
724
void (*callback) (void *, int success),
725
void *callback_context)
···
728
callback(callback_context, 1);
729
}
730
731
+
static void transient_fraction_full(struct dm_exception_store *store,
732
sector_t *numerator, sector_t *denominator)
733
{
734
*numerator = ((struct transient_c *) store->context)->next_free;
735
*denominator = get_dev_size(store->snap->cow->bdev);
736
}
737
738
+
int dm_create_transient(struct dm_exception_store *store)
739
{
740
struct transient_c *tc;
741
+10
-9
drivers/md/dm-exception-store.h
+10
-9
drivers/md/dm-exception-store.h
···
36
* Abstraction to handle the meta/layout of exception stores (the
37
* COW device).
38
*/
39
-
struct exception_store {
40
/*
41
* Destroys this object when you've finished with it.
42
*/
43
-
void (*destroy) (struct exception_store *store);
44
45
/*
46
* The target shouldn't read the COW device until this is
47
* called.
48
*/
49
-
int (*read_metadata) (struct exception_store *store);
50
51
/*
52
* Find somewhere to store the next exception.
53
*/
54
-
int (*prepare_exception) (struct exception_store *store,
55
struct dm_snap_exception *e);
56
57
/*
58
* Update the metadata with this exception.
59
*/
60
-
void (*commit_exception) (struct exception_store *store,
61
struct dm_snap_exception *e,
62
void (*callback) (void *, int success),
63
void *callback_context);
···
66
/*
67
* The snapshot is invalid, note this in the metadata.
68
*/
69
-
void (*drop_snapshot) (struct exception_store *store);
70
71
/*
72
* Return how full the snapshot is.
73
*/
74
-
void (*fraction_full) (struct exception_store *store,
75
sector_t *numerator,
76
sector_t *denominator);
77
···
125
/*
126
* Two exception store implementations.
127
*/
128
-
int dm_create_persistent(struct exception_store *store);
129
130
-
int dm_create_transient(struct exception_store *store);
131
132
#endif /* _LINUX_DM_EXCEPTION_STORE */
···
36
* Abstraction to handle the meta/layout of exception stores (the
37
* COW device).
38
*/
39
+
struct dm_exception_store {
40
+
41
/*
42
* Destroys this object when you've finished with it.
43
*/
44
+
void (*destroy) (struct dm_exception_store *store);
45
46
/*
47
* The target shouldn't read the COW device until this is
48
* called.
49
*/
50
+
int (*read_metadata) (struct dm_exception_store *store);
51
52
/*
53
* Find somewhere to store the next exception.
54
*/
55
+
int (*prepare_exception) (struct dm_exception_store *store,
56
struct dm_snap_exception *e);
57
58
/*
59
* Update the metadata with this exception.
60
*/
61
+
void (*commit_exception) (struct dm_exception_store *store,
62
struct dm_snap_exception *e,
63
void (*callback) (void *, int success),
64
void *callback_context);
···
65
/*
66
* The snapshot is invalid, note this in the metadata.
67
*/
68
+
void (*drop_snapshot) (struct dm_exception_store *store);
69
70
/*
71
* Return how full the snapshot is.
72
*/
73
+
void (*fraction_full) (struct dm_exception_store *store,
74
sector_t *numerator,
75
sector_t *denominator);
76
···
124
/*
125
* Two exception store implementations.
126
*/
127
+
int dm_create_persistent(struct dm_exception_store *store);
128
129
+
int dm_create_transient(struct dm_exception_store *store);
130
131
#endif /* _LINUX_DM_EXCEPTION_STORE */
+1
-1
drivers/md/dm-snap.h
+1
-1
drivers/md/dm-snap.h