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lightnvm: pblk: remove spinlock when freeing line metadata 

Lockdep complains about being in atomic context while freeing line
metadata - and rightly so as we take a spinlock and end up calling
vfree that might sleep(in pblk_mfree).

There is no need for holding the line manager free_lock while
freeing line metadata as the pipeline as stopped, so remove the lock.

Fixes: 588726d3ec ("lightnvm: pblk: fail gracefully on irrec. error")
Signed-off-by: Hans Holmberg <hans.holmberg@cnexlabs.com>
Signed-off-by: Matias Bjørling <m@bjorling.me>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Hans Holmberg 2017-10-13 14:46:43 +02:00 committed by Jens Axboe
parent 03e868eb8a
commit 28bd109411
1 changed files with 0 additions and 2 deletions
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2
drivers/lightnvm/pblk-init.c
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@ -393,13 +393,11 @@ static void pblk_line_meta_free(struct pblk *pblk)
kfree(l_mg->bb_aux); kfree(l_mg->bb_aux);
kfree(l_mg->vsc_list); kfree(l_mg->vsc_list);
spin_lock(&l_mg->free_lock);
for (i = 0; i < PBLK_DATA_LINES; i++) { for (i = 0; i < PBLK_DATA_LINES; i++) {
kfree(l_mg->sline_meta[i]); kfree(l_mg->sline_meta[i]);
pblk_mfree(l_mg->eline_meta[i]->buf, l_mg->emeta_alloc_type); pblk_mfree(l_mg->eline_meta[i]->buf, l_mg->emeta_alloc_type);
kfree(l_mg->eline_meta[i]); kfree(l_mg->eline_meta[i]);
} }
spin_unlock(&l_mg->free_lock);
kfree(pblk->lines); kfree(pblk->lines);
} }