AuxXxilium/linux_dsm_epyc7002
1
0
Fork 0
mirror of https://github.com/AuxXxilium/linux_dsm_epyc7002.git synced 2024-12-02 23:16:49 +07:00
Code Issues Actions Packages Projects Releases Wiki Activity

md/raid5: Move code for finishing a reconstruction into handle_stripe.

Browse Source 
Prior to commit ab69ae12ce the code in handle_stripe5 and
handle_stripe6 to "Finish reconstruct operations initiated by the
expansion process" was identical.
That commit added an identical stanza of code to each function, but in
different places.  That was careless.

The raid5 code was correct, so move that out into handle_stripe and
remove raid6 version.

Signed-off-by: NeilBrown <neilb@suse.de>
Reviewed-by: Namhyung Kim <namhyung@gmail.com>
This commit is contained in:
NeilBrown 2011-07-27 11:00:36 +10:00
parent 86c374ba9f
commit 3687c06188
1 changed files with 57 additions and 96 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

153
drivers/md/raid5.c
View File

@ -2998,7 +2998,7 @@ static void handle_stripe_expansion(raid5_conf_t *conf, struct stripe_head *sh)
* *
*/ */
static void handle_stripe5(struct stripe_head *sh, struct stripe_head_state *s) static int handle_stripe5(struct stripe_head *sh, struct stripe_head_state *s)
{ {
raid5_conf_t *conf = sh->raid_conf; raid5_conf_t *conf = sh->raid_conf;
int disks = sh->disks, i; int disks = sh->disks, i;
@ -3080,7 +3080,7 @@ static void handle_stripe5(struct stripe_head *sh, struct stripe_head_state *s)
if (s->syncing || s->expanding || s->expanded || if (s->syncing || s->expanding || s->expanded ||
s->to_write || s->written) { s->to_write || s->written) {
set_bit(STRIPE_HANDLE, &sh->state); set_bit(STRIPE_HANDLE, &sh->state);
return; return 1;
} }
/* There is nothing for the blocked_rdev to block */ /* There is nothing for the blocked_rdev to block */
rdev_dec_pending(s->blocked_rdev, conf->mddev); rdev_dec_pending(s->blocked_rdev, conf->mddev);
@ -3204,54 +3204,10 @@ static void handle_stripe5(struct stripe_head *sh, struct stripe_head_state *s)
s->locked++; s->locked++;
} }
} }
return 0;
/* Finish reconstruct operations initiated by the expansion process */
if (sh->reconstruct_state == reconstruct_state_result) {
struct stripe_head *sh2
= get_active_stripe(conf, sh->sector, 1, 1, 1);
if (sh2 && test_bit(STRIPE_EXPAND_SOURCE, &sh2->state)) {
/* sh cannot be written until sh2 has been read.
* so arrange for sh to be delayed a little
*/
set_bit(STRIPE_DELAYED, &sh->state);
set_bit(STRIPE_HANDLE, &sh->state);
if (!test_and_set_bit(STRIPE_PREREAD_ACTIVE,
&sh2->state))
atomic_inc(&conf->preread_active_stripes);
release_stripe(sh2);
return;
}
if (sh2)
release_stripe(sh2);
sh->reconstruct_state = reconstruct_state_idle;
clear_bit(STRIPE_EXPANDING, &sh->state);
for (i = conf->raid_disks; i--; ) {
set_bit(R5_Wantwrite, &sh->dev[i].flags);
set_bit(R5_LOCKED, &sh->dev[i].flags);
s->locked++;
}
}
if (s->expanded && test_bit(STRIPE_EXPANDING, &sh->state) &&
!sh->reconstruct_state) {
/* Need to write out all blocks after computing parity */
sh->disks = conf->raid_disks;
stripe_set_idx(sh->sector, conf, 0, sh);
schedule_reconstruction(sh, s, 1, 1);
} else if (s->expanded && !sh->reconstruct_state && s->locked == 0) {
clear_bit(STRIPE_EXPAND_READY, &sh->state);
atomic_dec(&conf->reshape_stripes);
wake_up(&conf->wait_for_overlap);
md_done_sync(conf->mddev, STRIPE_SECTORS, 1);
}
if (s->expanding && s->locked == 0 &&
!test_bit(STRIPE_COMPUTE_RUN, &sh->state))
handle_stripe_expansion(conf, sh);
} }
static void handle_stripe6(struct stripe_head *sh, struct stripe_head_state *s) static int handle_stripe6(struct stripe_head *sh, struct stripe_head_state *s)
{ {
raid5_conf_t *conf = sh->raid_conf; raid5_conf_t *conf = sh->raid_conf;
int disks = sh->disks; int disks = sh->disks;
@ -3334,7 +3290,7 @@ static void handle_stripe6(struct stripe_head *sh, struct stripe_head_state *s)
if (s->syncing || s->expanding || s->expanded || if (s->syncing || s->expanding || s->expanded ||
s->to_write || s->written) { s->to_write || s->written) {
set_bit(STRIPE_HANDLE, &sh->state); set_bit(STRIPE_HANDLE, &sh->state);
return; return 1;
} }
/* There is nothing for the blocked_rdev to block */ /* There is nothing for the blocked_rdev to block */
rdev_dec_pending(s->blocked_rdev, conf->mddev); rdev_dec_pending(s->blocked_rdev, conf->mddev);
@ -3467,56 +3423,14 @@ static void handle_stripe6(struct stripe_head *sh, struct stripe_head_state *s)
} }
} }
} }
return 0;
/* Finish reconstruct operations initiated by the expansion process */
if (sh->reconstruct_state == reconstruct_state_result) {
sh->reconstruct_state = reconstruct_state_idle;
clear_bit(STRIPE_EXPANDING, &sh->state);
for (i = conf->raid_disks; i--; ) {
set_bit(R5_Wantwrite, &sh->dev[i].flags);
set_bit(R5_LOCKED, &sh->dev[i].flags);
s->locked++;
}
}
if (s->expanded && test_bit(STRIPE_EXPANDING, &sh->state) &&
!sh->reconstruct_state) {
struct stripe_head *sh2
= get_active_stripe(conf, sh->sector, 1, 1, 1);
if (sh2 && test_bit(STRIPE_EXPAND_SOURCE, &sh2->state)) {
/* sh cannot be written until sh2 has been read.
* so arrange for sh to be delayed a little
*/
set_bit(STRIPE_DELAYED, &sh->state);
set_bit(STRIPE_HANDLE, &sh->state);
if (!test_and_set_bit(STRIPE_PREREAD_ACTIVE,
&sh2->state))
atomic_inc(&conf->preread_active_stripes);
release_stripe(sh2);
return;
}
if (sh2)
release_stripe(sh2);
/* Need to write out all blocks after computing P&Q */
sh->disks = conf->raid_disks;
stripe_set_idx(sh->sector, conf, 0, sh);
schedule_reconstruction(sh, s, 1, 1);
} else if (s->expanded && !sh->reconstruct_state && s->locked == 0) {
clear_bit(STRIPE_EXPAND_READY, &sh->state);
atomic_dec(&conf->reshape_stripes);
wake_up(&conf->wait_for_overlap);
md_done_sync(conf->mddev, STRIPE_SECTORS, 1);
}
if (s->expanding && s->locked == 0 &&
!test_bit(STRIPE_COMPUTE_RUN, &sh->state))
handle_stripe_expansion(conf, sh);
} }
static void handle_stripe(struct stripe_head *sh) static void handle_stripe(struct stripe_head *sh)
{ {
struct stripe_head_state s; struct stripe_head_state s;
int done;
int i;
raid5_conf_t *conf = sh->raid_conf; raid5_conf_t *conf = sh->raid_conf;
clear_bit(STRIPE_HANDLE, &sh->state); clear_bit(STRIPE_HANDLE, &sh->state);
@ -3545,11 +3459,58 @@ static void handle_stripe(struct stripe_head *sh)
s.expanded = test_bit(STRIPE_EXPAND_READY, &sh->state); s.expanded = test_bit(STRIPE_EXPAND_READY, &sh->state);
if (conf->level == 6) if (conf->level == 6)
handle_stripe6(sh, &s); done = handle_stripe6(sh, &s);
else else
handle_stripe5(sh, &s); done = handle_stripe5(sh, &s);
if (done)
goto finish;
/* Finish reconstruct operations initiated by the expansion process */
if (sh->reconstruct_state == reconstruct_state_result) {
struct stripe_head *sh_src
= get_active_stripe(conf, sh->sector, 1, 1, 1);
if (sh_src && test_bit(STRIPE_EXPAND_SOURCE, &sh_src->state)) {
/* sh cannot be written until sh_src has been read.
* so arrange for sh to be delayed a little
*/
set_bit(STRIPE_DELAYED, &sh->state);
set_bit(STRIPE_HANDLE, &sh->state);
if (!test_and_set_bit(STRIPE_PREREAD_ACTIVE,
&sh_src->state))
atomic_inc(&conf->preread_active_stripes);
release_stripe(sh_src);
goto finish;
}
if (sh_src)
release_stripe(sh_src);
sh->reconstruct_state = reconstruct_state_idle;
clear_bit(STRIPE_EXPANDING, &sh->state);
for (i = conf->raid_disks; i--; ) {
set_bit(R5_Wantwrite, &sh->dev[i].flags);
set_bit(R5_LOCKED, &sh->dev[i].flags);
s.locked++;
}
}
if (s.expanded && test_bit(STRIPE_EXPANDING, &sh->state) &&
!sh->reconstruct_state) {
/* Need to write out all blocks after computing parity */
sh->disks = conf->raid_disks;
stripe_set_idx(sh->sector, conf, 0, sh);
schedule_reconstruction(sh, &s, 1, 1);
} else if (s.expanded && !sh->reconstruct_state && s.locked == 0) {
clear_bit(STRIPE_EXPAND_READY, &sh->state);
atomic_dec(&conf->reshape_stripes);
wake_up(&conf->wait_for_overlap);
md_done_sync(conf->mddev, STRIPE_SECTORS, 1);
}
if (s.expanding && s.locked == 0 &&
!test_bit(STRIPE_COMPUTE_RUN, &sh->state))
handle_stripe_expansion(conf, sh);
finish:
/* wait for this device to become unblocked */ /* wait for this device to become unblocked */
if (unlikely(s.blocked_rdev)) if (unlikely(s.blocked_rdev))
md_wait_for_blocked_rdev(s.blocked_rdev, conf->mddev); md_wait_for_blocked_rdev(s.blocked_rdev, conf->mddev);