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dm/dm-integrity: Combine request operation and flags 

Combine the request operation type and request flags into a single
argument. Improve static type checking by using the enum req_op type for
variables that represent a request operation and the new blk_opf_t type for
variables that represent request flags.

Cc: Alasdair Kergon <agk@redhat.com>
Cc: Mike Snitzer <snitzer@kernel.org>
Cc: Eric Biggers <ebiggers@google.com>
Cc: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Link: https://lore.kernel.org/r/20220714180729.1065367-27-bvanassche@acm.org
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Bart Van Assche 2022-07-14 11:06:52 -07:00 committed by Jens Axboe
parent eff17e5161
commit c9154a4cb8
1 changed files with 34 additions and 29 deletions
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63
drivers/md/dm-integrity.c
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@ -551,13 +551,14 @@ static int sb_mac(struct dm_integrity_c *ic, bool wr)
return 0;
}
static int sync_rw_sb(struct dm_integrity_c *ic, int op, int op_flags)
static int sync_rw_sb(struct dm_integrity_c *ic, blk_opf_t opf)
{
struct dm_io_request io_req;
struct dm_io_region io_loc;
const enum req_op op = opf & REQ_OP_MASK;
int r;
io_req.bi_opf = op | op_flags;
io_req.bi_opf = opf;
io_req.mem.type = DM_IO_KMEM;
io_req.mem.ptr.addr = ic->sb;
io_req.notify.fn = NULL;
@ -1049,8 +1050,9 @@ static void complete_journal_io(unsigned long error, void *context)
complete_journal_op(comp);
}
static void rw_journal_sectors(struct dm_integrity_c *ic, int op, int op_flags,
unsigned sector, unsigned n_sectors, struct journal_completion *comp)
static void rw_journal_sectors(struct dm_integrity_c *ic, blk_opf_t opf,
unsigned sector, unsigned n_sectors,
struct journal_completion *comp)
{
struct dm_io_request io_req;
struct dm_io_region io_loc;
@ -1066,7 +1068,7 @@ static void rw_journal_sectors(struct dm_integrity_c *ic, int op, int op_flags,
pl_index = sector >> (PAGE_SHIFT - SECTOR_SHIFT);
pl_offset = (sector << SECTOR_SHIFT) & (PAGE_SIZE - 1);
io_req.bi_opf = op | op_flags;
io_req.bi_opf = opf;
io_req.mem.type = DM_IO_PAGE_LIST;
if (ic->journal_io)
io_req.mem.ptr.pl = &ic->journal_io[pl_index];
@ -1086,7 +1088,8 @@ static void rw_journal_sectors(struct dm_integrity_c *ic, int op, int op_flags,
r = dm_io(&io_req, 1, &io_loc, NULL);
if (unlikely(r)) {
dm_integrity_io_error(ic, op == REQ_OP_READ ? "reading journal" : "writing journal", r);
dm_integrity_io_error(ic, (opf & REQ_OP_MASK) == REQ_OP_READ ?
"reading journal" : "writing journal", r);
if (comp) {
WARN_ONCE(1, "asynchronous dm_io failed: %d", r);
complete_journal_io(-1UL, comp);
@ -1094,15 +1097,16 @@ static void rw_journal_sectors(struct dm_integrity_c *ic, int op, int op_flags,
}
}
static void rw_journal(struct dm_integrity_c *ic, int op, int op_flags, unsigned section,
unsigned n_sections, struct journal_completion *comp)
static void rw_journal(struct dm_integrity_c *ic, blk_opf_t opf,
unsigned section, unsigned n_sections,
struct journal_completion *comp)
{
unsigned sector, n_sectors;
sector = section * ic->journal_section_sectors;
n_sectors = n_sections * ic->journal_section_sectors;
rw_journal_sectors(ic, op, op_flags, sector, n_sectors, comp);
rw_journal_sectors(ic, opf, sector, n_sectors, comp);
}
static void write_journal(struct dm_integrity_c *ic, unsigned commit_start, unsigned commit_sections)
@ -1127,7 +1131,7 @@ static void write_journal(struct dm_integrity_c *ic, unsigned commit_start, unsi
for (i = 0; i < commit_sections; i++)
rw_section_mac(ic, commit_start + i, true);
}
rw_journal(ic, REQ_OP_WRITE, REQ_FUA | REQ_SYNC, commit_start,
rw_journal(ic, REQ_OP_WRITE | REQ_FUA | REQ_SYNC, commit_start,
commit_sections, &io_comp);
} else {
unsigned to_end;
@ -1139,7 +1143,8 @@ static void write_journal(struct dm_integrity_c *ic, unsigned commit_start, unsi
crypt_comp_1.in_flight = (atomic_t)ATOMIC_INIT(0);
encrypt_journal(ic, true, commit_start, to_end, &crypt_comp_1);
if (try_wait_for_completion(&crypt_comp_1.comp)) {
rw_journal(ic, REQ_OP_WRITE, REQ_FUA, commit_start, to_end, &io_comp);
rw_journal(ic, REQ_OP_WRITE | REQ_FUA,
commit_start, to_end, &io_comp);
reinit_completion(&crypt_comp_1.comp);
crypt_comp_1.in_flight = (atomic_t)ATOMIC_INIT(0);
encrypt_journal(ic, true, 0, commit_sections - to_end, &crypt_comp_1);
@ -1150,17 +1155,17 @@ static void write_journal(struct dm_integrity_c *ic, unsigned commit_start, unsi
crypt_comp_2.in_flight = (atomic_t)ATOMIC_INIT(0);
encrypt_journal(ic, true, 0, commit_sections - to_end, &crypt_comp_2);
wait_for_completion_io(&crypt_comp_1.comp);
rw_journal(ic, REQ_OP_WRITE, REQ_FUA, commit_start, to_end, &io_comp);
rw_journal(ic, REQ_OP_WRITE | REQ_FUA, commit_start, to_end, &io_comp);
wait_for_completion_io(&crypt_comp_2.comp);
}
} else {
for (i = 0; i < to_end; i++)
rw_section_mac(ic, commit_start + i, true);
rw_journal(ic, REQ_OP_WRITE, REQ_FUA, commit_start, to_end, &io_comp);
rw_journal(ic, REQ_OP_WRITE | REQ_FUA, commit_start, to_end, &io_comp);
for (i = 0; i < commit_sections - to_end; i++)
rw_section_mac(ic, i, true);
}
rw_journal(ic, REQ_OP_WRITE, REQ_FUA, 0, commit_sections - to_end, &io_comp);
rw_journal(ic, REQ_OP_WRITE | REQ_FUA, 0, commit_sections - to_end, &io_comp);
}
wait_for_completion_io(&io_comp.comp);
@ -2622,7 +2627,7 @@ static void recalc_write_super(struct dm_integrity_c *ic)
if (dm_integrity_failed(ic))
return;
r = sync_rw_sb(ic, REQ_OP_WRITE, 0);
r = sync_rw_sb(ic, REQ_OP_WRITE);
if (unlikely(r))
dm_integrity_io_error(ic, "writing superblock", r);
}
@ -2795,7 +2800,7 @@ static void bitmap_block_work(struct work_struct *w)
if (bio_list_empty(&waiting))
return;
rw_journal_sectors(ic, REQ_OP_WRITE, REQ_FUA | REQ_SYNC,
rw_journal_sectors(ic, REQ_OP_WRITE | REQ_FUA | REQ_SYNC,
bbs->idx * (BITMAP_BLOCK_SIZE >> SECTOR_SHIFT),
BITMAP_BLOCK_SIZE >> SECTOR_SHIFT, NULL);
@ -2841,7 +2846,7 @@ static void bitmap_flush_work(struct work_struct *work)
block_bitmap_op(ic, ic->journal, 0, limit, BITMAP_OP_CLEAR);
block_bitmap_op(ic, ic->may_write_bitmap, 0, limit, BITMAP_OP_CLEAR);
rw_journal_sectors(ic, REQ_OP_WRITE, REQ_FUA | REQ_SYNC, 0,
rw_journal_sectors(ic, REQ_OP_WRITE | REQ_FUA | REQ_SYNC, 0,
ic->n_bitmap_blocks * (BITMAP_BLOCK_SIZE >> SECTOR_SHIFT), NULL);
spin_lock_irq(&ic->endio_wait.lock);
@ -2913,7 +2918,7 @@ static void replay_journal(struct dm_integrity_c *ic)
if (!ic->just_formatted) {
DEBUG_print("reading journal\n");
rw_journal(ic, REQ_OP_READ, 0, 0, ic->journal_sections, NULL);
rw_journal(ic, REQ_OP_READ, 0, ic->journal_sections, NULL);
if (ic->journal_io)
DEBUG_bytes(lowmem_page_address(ic->journal_io[0].page), 64, "read journal");
if (ic->journal_io) {
@ -3108,7 +3113,7 @@ static void dm_integrity_postsuspend(struct dm_target *ti)
/* set to 0 to test bitmap replay code */
init_journal(ic, 0, ic->journal_sections, 0);
ic->sb->flags &= ~cpu_to_le32(SB_FLAG_DIRTY_BITMAP);
r = sync_rw_sb(ic, REQ_OP_WRITE, REQ_FUA);
r = sync_rw_sb(ic, REQ_OP_WRITE | REQ_FUA);
if (unlikely(r))
dm_integrity_io_error(ic, "writing superblock", r);
#endif
@ -3131,23 +3136,23 @@ static void dm_integrity_resume(struct dm_target *ti)
if (ic->provided_data_sectors > old_provided_data_sectors &&
ic->mode == 'B' &&
ic->sb->log2_blocks_per_bitmap_bit == ic->log2_blocks_per_bitmap_bit) {
rw_journal_sectors(ic, REQ_OP_READ, 0, 0,
rw_journal_sectors(ic, REQ_OP_READ, 0,
ic->n_bitmap_blocks * (BITMAP_BLOCK_SIZE >> SECTOR_SHIFT), NULL);
block_bitmap_op(ic, ic->journal, old_provided_data_sectors,
ic->provided_data_sectors - old_provided_data_sectors, BITMAP_OP_SET);
rw_journal_sectors(ic, REQ_OP_WRITE, REQ_FUA | REQ_SYNC, 0,
rw_journal_sectors(ic, REQ_OP_WRITE | REQ_FUA | REQ_SYNC, 0,
ic->n_bitmap_blocks * (BITMAP_BLOCK_SIZE >> SECTOR_SHIFT), NULL);
}
ic->sb->provided_data_sectors = cpu_to_le64(ic->provided_data_sectors);
r = sync_rw_sb(ic, REQ_OP_WRITE, REQ_FUA);
r = sync_rw_sb(ic, REQ_OP_WRITE | REQ_FUA);
if (unlikely(r))
dm_integrity_io_error(ic, "writing superblock", r);
}
if (ic->sb->flags & cpu_to_le32(SB_FLAG_DIRTY_BITMAP)) {
DEBUG_print("resume dirty_bitmap\n");
rw_journal_sectors(ic, REQ_OP_READ, 0, 0,
rw_journal_sectors(ic, REQ_OP_READ, 0,
ic->n_bitmap_blocks * (BITMAP_BLOCK_SIZE >> SECTOR_SHIFT), NULL);
if (ic->mode == 'B') {
if (ic->sb->log2_blocks_per_bitmap_bit == ic->log2_blocks_per_bitmap_bit &&
@ -3166,7 +3171,7 @@ static void dm_integrity_resume(struct dm_target *ti)
block_bitmap_op(ic, ic->recalc_bitmap, 0, ic->provided_data_sectors, BITMAP_OP_SET);
block_bitmap_op(ic, ic->may_write_bitmap, 0, ic->provided_data_sectors, BITMAP_OP_SET);
block_bitmap_op(ic, ic->journal, 0, ic->provided_data_sectors, BITMAP_OP_SET);
rw_journal_sectors(ic, REQ_OP_WRITE, REQ_FUA | REQ_SYNC, 0,
rw_journal_sectors(ic, REQ_OP_WRITE | REQ_FUA | REQ_SYNC, 0,
ic->n_bitmap_blocks * (BITMAP_BLOCK_SIZE >> SECTOR_SHIFT), NULL);
ic->sb->flags |= cpu_to_le32(SB_FLAG_RECALCULATING);
ic->sb->recalc_sector = cpu_to_le64(0);
@ -3182,7 +3187,7 @@ static void dm_integrity_resume(struct dm_target *ti)
replay_journal(ic);
ic->sb->flags &= ~cpu_to_le32(SB_FLAG_DIRTY_BITMAP);
}
r = sync_rw_sb(ic, REQ_OP_WRITE, REQ_FUA);
r = sync_rw_sb(ic, REQ_OP_WRITE | REQ_FUA);
if (unlikely(r))
dm_integrity_io_error(ic, "writing superblock", r);
} else {
@ -3194,7 +3199,7 @@ static void dm_integrity_resume(struct dm_target *ti)
if (ic->mode == 'B') {
ic->sb->flags |= cpu_to_le32(SB_FLAG_DIRTY_BITMAP);
ic->sb->log2_blocks_per_bitmap_bit = ic->log2_blocks_per_bitmap_bit;
r = sync_rw_sb(ic, REQ_OP_WRITE, REQ_FUA);
r = sync_rw_sb(ic, REQ_OP_WRITE | REQ_FUA);
if (unlikely(r))
dm_integrity_io_error(ic, "writing superblock", r);
@ -3210,7 +3215,7 @@ static void dm_integrity_resume(struct dm_target *ti)
block_bitmap_op(ic, ic->may_write_bitmap, le64_to_cpu(ic->sb->recalc_sector),
ic->provided_data_sectors - le64_to_cpu(ic->sb->recalc_sector), BITMAP_OP_SET);
}
rw_journal_sectors(ic, REQ_OP_WRITE, REQ_FUA | REQ_SYNC, 0,
rw_journal_sectors(ic, REQ_OP_WRITE | REQ_FUA | REQ_SYNC, 0,
ic->n_bitmap_blocks * (BITMAP_BLOCK_SIZE >> SECTOR_SHIFT), NULL);
}
}
@ -4251,7 +4256,7 @@ static int dm_integrity_ctr(struct dm_target *ti, unsigned argc, char **argv)
goto bad;
}
r = sync_rw_sb(ic, REQ_OP_READ, 0);
r = sync_rw_sb(ic, REQ_OP_READ);
if (r) {
ti->error = "Error reading superblock";
goto bad;
@ -4495,7 +4500,7 @@ try_smaller_buffer:
ti->error = "Error initializing journal";
goto bad;
}
r = sync_rw_sb(ic, REQ_OP_WRITE, REQ_FUA);
r = sync_rw_sb(ic, REQ_OP_WRITE | REQ_FUA);
if (r) {
ti->error = "Error initializing superblock";
goto bad;