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. Combine the 'mode' and
'mode_flags' arguments of nilfs_btnode_submit_block into a single
argument 'opf'.
Reviewed-by: Ryusuke Konishi <konishi.ryusuke@xxxxxxxxx>
Signed-off-by: Bart Van Assche <bvanassche@xxxxxxx>
---
fs/nilfs2/btnode.c | 8 ++++----
fs/nilfs2/btnode.h | 4 ++--
fs/nilfs2/btree.c | 6 +++---
fs/nilfs2/gcinode.c | 5 ++---
fs/nilfs2/mdt.c | 19 ++++++++++---------
include/trace/events/nilfs2.h | 4 ++--
6 files changed, 23 insertions(+), 23 deletions(-)
diff --git a/fs/nilfs2/btnode.c b/fs/nilfs2/btnode.c
index 5c39efbf733f..e74fda212620 100644
--- a/fs/nilfs2/btnode.c
+++ b/fs/nilfs2/btnode.c
@@ -70,7 +70,7 @@ nilfs_btnode_create_block(struct address_space *btnc, __u64 blocknr)
}
int nilfs_btnode_submit_block(struct address_space *btnc, __u64 blocknr,
- sector_t pblocknr, int mode, int mode_flags,
+ sector_t pblocknr, blk_opf_t opf,
struct buffer_head **pbh, sector_t *submit_ptr)
{
struct buffer_head *bh;
@@ -103,13 +103,13 @@ int nilfs_btnode_submit_block(struct address_space *btnc, __u64 blocknr,
}
}
- if (mode_flags & REQ_RAHEAD) {
+ if (opf & REQ_RAHEAD) {
if (pblocknr != *submit_ptr + 1 || !trylock_buffer(bh)) {
err = -EBUSY; /* internal code */
brelse(bh);
goto out_locked;
}
- } else { /* mode == READ */
+ } else { /* opf == REQ_OP_READ */
lock_buffer(bh);
}
if (buffer_uptodate(bh)) {
@@ -122,7 +122,7 @@ int nilfs_btnode_submit_block(struct address_space *btnc, __u64 blocknr,
bh->b_blocknr = pblocknr; /* set block address for read */
bh->b_end_io = end_buffer_read_sync;
get_bh(bh);
- submit_bh(mode | mode_flags, bh);
+ submit_bh(opf, bh);
bh->b_blocknr = blocknr; /* set back to the given block address */
*submit_ptr = pblocknr;
err = 0;
diff --git a/fs/nilfs2/btnode.h b/fs/nilfs2/btnode.h
index bd5544e63a01..4bc5612dff94 100644
--- a/fs/nilfs2/btnode.h
+++ b/fs/nilfs2/btnode.h
@@ -34,8 +34,8 @@ void nilfs_init_btnc_inode(struct inode *btnc_inode);
void nilfs_btnode_cache_clear(struct address_space *);
struct buffer_head *nilfs_btnode_create_block(struct address_space *btnc,
__u64 blocknr);
-int nilfs_btnode_submit_block(struct address_space *, __u64, sector_t, int,
- int, struct buffer_head **, sector_t *);
+int nilfs_btnode_submit_block(struct address_space *, __u64, sector_t,
+ blk_opf_t, struct buffer_head **, sector_t *);
void nilfs_btnode_delete(struct buffer_head *);
int nilfs_btnode_prepare_change_key(struct address_space *,
struct nilfs_btnode_chkey_ctxt *);
diff --git a/fs/nilfs2/btree.c b/fs/nilfs2/btree.c
index f544c22fff78..9f4d9432d38a 100644
--- a/fs/nilfs2/btree.c
+++ b/fs/nilfs2/btree.c
@@ -477,7 +477,7 @@ static int __nilfs_btree_get_block(const struct nilfs_bmap *btree, __u64 ptr,
sector_t submit_ptr = 0;
int ret;
- ret = nilfs_btnode_submit_block(btnc, ptr, 0, REQ_OP_READ, 0, &bh,
+ ret = nilfs_btnode_submit_block(btnc, ptr, 0, REQ_OP_READ, &bh,
&submit_ptr);
if (ret) {
if (ret != -EEXIST)
@@ -495,8 +495,8 @@ static int __nilfs_btree_get_block(const struct nilfs_bmap *btree, __u64 ptr,
ptr2 = nilfs_btree_node_get_ptr(ra->node, i, ra->ncmax);
ret = nilfs_btnode_submit_block(btnc, ptr2, 0,
- REQ_OP_READ, REQ_RAHEAD,
- &ra_bh, &submit_ptr);
+ REQ_OP_READ | REQ_RAHEAD,
+ &ra_bh, &submit_ptr);
if (likely(!ret || ret == -EEXIST))
brelse(ra_bh);
else if (ret != -EBUSY)
diff --git a/fs/nilfs2/gcinode.c b/fs/nilfs2/gcinode.c
index 847def8af315..b0d22ff24b67 100644
--- a/fs/nilfs2/gcinode.c
+++ b/fs/nilfs2/gcinode.c
@@ -129,9 +129,8 @@ int nilfs_gccache_submit_read_node(struct inode *inode, sector_t pbn,
struct inode *btnc_inode = NILFS_I(inode)->i_assoc_inode;
int ret;
- ret = nilfs_btnode_submit_block(btnc_inode->i_mapping,
- vbn ? : pbn, pbn, REQ_OP_READ, 0,
- out_bh, &pbn);
+ ret = nilfs_btnode_submit_block(btnc_inode->i_mapping, vbn ? : pbn, pbn,
+ REQ_OP_READ, out_bh, &pbn);
if (ret == -EEXIST) /* internal code (cache hit) */
ret = 0;
return ret;
diff --git a/fs/nilfs2/mdt.c b/fs/nilfs2/mdt.c
index 66e8811c2528..cbf4fa60eea2 100644
--- a/fs/nilfs2/mdt.c
+++ b/fs/nilfs2/mdt.c
@@ -111,8 +111,8 @@ static int nilfs_mdt_create_block(struct inode *inode, unsigned long block,
}
static int
-nilfs_mdt_submit_block(struct inode *inode, unsigned long blkoff,
- int mode, int mode_flags, struct buffer_head **out_bh)
+nilfs_mdt_submit_block(struct inode *inode, unsigned long blkoff, blk_opf_t opf,
+ struct buffer_head **out_bh)
{
struct buffer_head *bh;
__u64 blknum = 0;
@@ -126,12 +126,12 @@ nilfs_mdt_submit_block(struct inode *inode, unsigned long blkoff,
if (buffer_uptodate(bh))
goto out;
- if (mode_flags & REQ_RAHEAD) {
+ if (opf & REQ_RAHEAD) {
if (!trylock_buffer(bh)) {
ret = -EBUSY;
goto failed_bh;
}
- } else /* mode == READ */
+ } else /* opf == REQ_OP_READ */
lock_buffer(bh);
if (buffer_uptodate(bh)) {
@@ -148,10 +148,11 @@ nilfs_mdt_submit_block(struct inode *inode, unsigned long blkoff,
bh->b_end_io = end_buffer_read_sync;
get_bh(bh);
- submit_bh(mode | mode_flags, bh);
+ submit_bh(opf, bh);
ret = 0;
- trace_nilfs2_mdt_submit_block(inode, inode->i_ino, blkoff, mode);
+ trace_nilfs2_mdt_submit_block(inode, inode->i_ino, blkoff,
+ opf & REQ_OP_MASK);
out:
get_bh(bh);
*out_bh = bh;
@@ -172,7 +173,7 @@ static int nilfs_mdt_read_block(struct inode *inode, unsigned long block,
int i, nr_ra_blocks = NILFS_MDT_MAX_RA_BLOCKS;
int err;
- err = nilfs_mdt_submit_block(inode, block, REQ_OP_READ, 0, &first_bh);
+ err = nilfs_mdt_submit_block(inode, block, REQ_OP_READ, &first_bh);
if (err == -EEXIST) /* internal code */
goto out;
@@ -182,8 +183,8 @@ static int nilfs_mdt_read_block(struct inode *inode, unsigned long block,
if (readahead) {
blkoff = block + 1;
for (i = 0; i < nr_ra_blocks; i++, blkoff++) {
- err = nilfs_mdt_submit_block(inode, blkoff, REQ_OP_READ,
- REQ_RAHEAD, &bh);
+ err = nilfs_mdt_submit_block(inode, blkoff,
+ REQ_OP_READ | REQ_RAHEAD, &bh);
if (likely(!err || err == -EEXIST))
brelse(bh);
else if (err != -EBUSY)
diff --git a/include/trace/events/nilfs2.h b/include/trace/events/nilfs2.h
index 84ee31fc04cc..8efc6236f57c 100644
--- a/include/trace/events/nilfs2.h
+++ b/include/trace/events/nilfs2.h
@@ -192,7 +192,7 @@ TRACE_EVENT(nilfs2_mdt_submit_block,
TP_PROTO(struct inode *inode,
unsigned long ino,
unsigned long blkoff,
- int mode),
+ enum req_op mode),
TP_ARGS(inode, ino, blkoff, mode),
@@ -200,7 +200,7 @@ TRACE_EVENT(nilfs2_mdt_submit_block,
__field(struct inode *, inode)
__field(unsigned long, ino)
__field(unsigned long, blkoff)
- __field(int, mode)
+ __field(enum req_op, mode)
),
TP_fast_assign(
