Pass size to dm_integrity_alloc_page_list. The following patches will need a size that is different from ic->journal_pages.
Signed-off-by: Mikulas Patocka <[email protected]> --- drivers/md/dm-integrity.c | 30 +++++++++++++++--------------- 1 file changed, 15 insertions(+), 15 deletions(-) Index: linux-2.6/drivers/md/dm-integrity.c =================================================================== --- linux-2.6.orig/drivers/md/dm-integrity.c 2019-04-09 14:01:48.000000000 +0200 +++ linux-2.6/drivers/md/dm-integrity.c 2019-04-09 14:01:48.000000000 +0200 @@ -2677,37 +2677,37 @@ static void dm_integrity_set(struct dm_t blk_queue_max_integrity_segments(disk->queue, UINT_MAX); } -static void dm_integrity_free_page_list(struct dm_integrity_c *ic, struct page_list *pl) +static void dm_integrity_free_page_list(struct page_list *pl) { unsigned i; if (!pl) return; - for (i = 0; i < ic->journal_pages; i++) - if (pl[i].page) - __free_page(pl[i].page); + for (i = 0; pl[i].page; i++) + __free_page(pl[i].page); kvfree(pl); } -static struct page_list *dm_integrity_alloc_page_list(struct dm_integrity_c *ic) +static struct page_list *dm_integrity_alloc_page_list(unsigned n_pages) { - size_t page_list_desc_size = ic->journal_pages * sizeof(struct page_list); struct page_list *pl; unsigned i; - pl = kvmalloc(page_list_desc_size, GFP_KERNEL | __GFP_ZERO); + pl = kvmalloc_array(n_pages + 1, sizeof(struct page_list), GFP_KERNEL | __GFP_ZERO); if (!pl) return NULL; - for (i = 0; i < ic->journal_pages; i++) { + for (i = 0; i < n_pages; i++) { pl[i].page = alloc_page(GFP_KERNEL); if (!pl[i].page) { - dm_integrity_free_page_list(ic, pl); + dm_integrity_free_page_list(pl); return NULL; } if (i) pl[i - 1].next = &pl[i]; } + pl[i].page = NULL; + pl[i].next = NULL; return pl; } @@ -2860,7 +2860,7 @@ static int create_journal(struct dm_inte } ic->journal_pages = journal_pages; - ic->journal = dm_integrity_alloc_page_list(ic); + ic->journal = dm_integrity_alloc_page_list(ic->journal_pages); if (!ic->journal) { *error = "Could not allocate memory for journal"; r = -ENOMEM; @@ -2892,7 +2892,7 @@ static int create_journal(struct dm_inte DEBUG_print("cipher %s, block size %u iv size %u\n", ic->journal_crypt_alg.alg_string, blocksize, ivsize); - ic->journal_io = dm_integrity_alloc_page_list(ic); + ic->journal_io = dm_integrity_alloc_page_list(ic->journal_pages); if (!ic->journal_io) { *error = "Could not allocate memory for journal io"; r = -ENOMEM; @@ -2916,7 +2916,7 @@ static int create_journal(struct dm_inte goto bad; } - ic->journal_xor = dm_integrity_alloc_page_list(ic); + ic->journal_xor = dm_integrity_alloc_page_list(ic->journal_pages); if (!ic->journal_xor) { *error = "Could not allocate memory for journal xor"; r = -ENOMEM; @@ -3571,9 +3571,9 @@ static void dm_integrity_dtr(struct dm_t dm_put_device(ti, ic->dev); if (ic->meta_dev) dm_put_device(ti, ic->meta_dev); - dm_integrity_free_page_list(ic, ic->journal); - dm_integrity_free_page_list(ic, ic->journal_io); - dm_integrity_free_page_list(ic, ic->journal_xor); + dm_integrity_free_page_list(ic->journal); + dm_integrity_free_page_list(ic->journal_io); + dm_integrity_free_page_list(ic->journal_xor); if (ic->journal_scatterlist) dm_integrity_free_journal_scatterlist(ic, ic->journal_scatterlist); if (ic->journal_io_scatterlist) -- dm-devel mailing list [email protected] https://www.redhat.com/mailman/listinfo/dm-devel
