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lib/ftl: Fix band picking for write pointer

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Removing band from "free list" is moved from FTL_BAND_STATE_OPENING
to FTL_BAND_STATE_PREP state's change actions.
This will fix race condition when one band is prepared (erased)
and write pointer is trying to get next active band.

Change-Id: I9e4fe9482a01ee732271736e4a0e6fcedf2582d8
Signed-off-by: Wojciech Malikowski <wojciech.malikowski@intel.com>
Reviewed-on: https://review.gerrithub.io/c/445118 (master)
Reviewed-on: https://review.gerrithub.io/c/spdk/spdk/+/447461
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
This commit is contained in:
Wojciech Malikowski 2019-02-18 05:38:48 -05:00 committed by Ben Walker
parent e22df3fbcf
commit f882a577d4
1 changed files with 5 additions and 4 deletions
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9
lib/ftl/ftl_band.c
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@ -224,13 +224,14 @@ _ftl_band_set_free(struct ftl_band *band)
}
static void
_ftl_band_set_opening(struct ftl_band *band)
_ftl_band_set_preparing(struct ftl_band *band)
{
struct spdk_ftl_dev *dev = band->dev;
struct ftl_md *md = &band->md;
/* Verify band's previous state */
assert(band->state == FTL_BAND_STATE_PREP);
assert(band->state == FTL_BAND_STATE_FREE);
/* Remove band from free list */
LIST_REMOVE(band, list_entry);
md->wr_cnt++;
@ -467,8 +468,8 @@ ftl_band_set_state(struct ftl_band *band, enum ftl_band_state state)
_ftl_band_set_free(band);
break;
case FTL_BAND_STATE_OPENING:
_ftl_band_set_opening(band);
case FTL_BAND_STATE_PREP:
_ftl_band_set_preparing(band);
break;
case FTL_BAND_STATE_CLOSED: