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Date: Mon, 12 Oct 2015 12:45:30 +0900
From: Ryusuke Konishi <konishi.ryusuke@....ntt.co.jp>
To: Andrew Morton <akpm@...ux-foundation.org>
Cc: linux-nilfs <linux-nilfs@...r.kernel.org>,
LKML <linux-kernel@...r.kernel.org>,
Ryusuke Konishi <konishi.ryusuke@....ntt.co.jp>
Subject: [PATCH 1/2] nilfs2: fix gcc unused-but-set-variable warnings
Fix the following build warnings:
$ make W=1
[...]
CC [M] fs/nilfs2/btree.o
fs/nilfs2/btree.c: In function 'nilfs_btree_split':
fs/nilfs2/btree.c:923:8: warning: variable 'newptr' set but not used [-Wunused-but-set-variable]
__u64 newptr;
^
fs/nilfs2/btree.c:922:8: warning: variable 'newkey' set but not used [-Wunused-but-set-variable]
__u64 newkey;
^
CC [M] fs/nilfs2/dat.o
fs/nilfs2/dat.c: In function 'nilfs_dat_prepare_end':
fs/nilfs2/dat.c:158:8: warning: variable 'start' set but not used [-Wunused-but-set-variable]
__u64 start;
^
CC [M] fs/nilfs2/segment.o
fs/nilfs2/segment.c: In function 'nilfs_segctor_do_immediate_flush':
fs/nilfs2/segment.c:2433:6: warning: variable 'err' set but not used [-Wunused-but-set-variable]
int err;
^
CC [M] fs/nilfs2/sufile.o
fs/nilfs2/sufile.c: In function 'nilfs_sufile_alloc':
fs/nilfs2/sufile.c:320:27: warning: variable 'ncleansegs' set but not used [-Wunused-but-set-variable]
unsigned long nsegments, ncleansegs, nsus, cnt;
^
CC [M] fs/nilfs2/alloc.o
fs/nilfs2/alloc.c: In function 'nilfs_palloc_prepare_alloc_entry':
fs/nilfs2/alloc.c:478:38: warning: variable 'groups_per_desc_block' set but not used [-Wunused-but-set-variable]
unsigned long n, entries_per_group, groups_per_desc_block;
^
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@....ntt.co.jp>
---
fs/nilfs2/alloc.c | 3 +--
fs/nilfs2/btree.c | 5 -----
fs/nilfs2/dat.c | 2 --
fs/nilfs2/segment.c | 3 +--
fs/nilfs2/sufile.c | 3 +--
5 files changed, 3 insertions(+), 13 deletions(-)
diff --git a/fs/nilfs2/alloc.c b/fs/nilfs2/alloc.c
index 8df0f3b..dd6c142 100644
--- a/fs/nilfs2/alloc.c
+++ b/fs/nilfs2/alloc.c
@@ -475,7 +475,7 @@ int nilfs_palloc_prepare_alloc_entry(struct inode *inode,
void *desc_kaddr, *bitmap_kaddr;
unsigned long group, maxgroup, ngroups;
unsigned long group_offset, maxgroup_offset;
- unsigned long n, entries_per_group, groups_per_desc_block;
+ unsigned long n, entries_per_group;
unsigned long i, j;
int pos, ret;
@@ -483,7 +483,6 @@ int nilfs_palloc_prepare_alloc_entry(struct inode *inode,
maxgroup = ngroups - 1;
group = nilfs_palloc_group(inode, req->pr_entry_nr, &group_offset);
entries_per_group = nilfs_palloc_entries_per_group(inode);
- groups_per_desc_block = nilfs_palloc_groups_per_desc_block(inode);
for (i = 0; i < ngroups; i += n) {
if (group >= ngroups) {
diff --git a/fs/nilfs2/btree.c b/fs/nilfs2/btree.c
index 919fd5b..f609a85 100644
--- a/fs/nilfs2/btree.c
+++ b/fs/nilfs2/btree.c
@@ -919,8 +919,6 @@ static void nilfs_btree_split(struct nilfs_bmap *btree,
int level, __u64 *keyp, __u64 *ptrp)
{
struct nilfs_btree_node *node, *right;
- __u64 newkey;
- __u64 newptr;
int nchildren, n, move, ncblk;
node = nilfs_btree_get_nonroot_node(path, level);
@@ -942,9 +940,6 @@ static void nilfs_btree_split(struct nilfs_bmap *btree,
if (!buffer_dirty(path[level].bp_sib_bh))
mark_buffer_dirty(path[level].bp_sib_bh);
- newkey = nilfs_btree_node_get_key(right, 0);
- newptr = path[level].bp_newreq.bpr_ptr;
-
if (move) {
path[level].bp_index -= nilfs_btree_node_get_nchildren(node);
nilfs_btree_node_insert(right, path[level].bp_index,
diff --git a/fs/nilfs2/dat.c b/fs/nilfs2/dat.c
index 0d5fada..7dc23f1 100644
--- a/fs/nilfs2/dat.c
+++ b/fs/nilfs2/dat.c
@@ -155,7 +155,6 @@ void nilfs_dat_commit_start(struct inode *dat, struct nilfs_palloc_req *req,
int nilfs_dat_prepare_end(struct inode *dat, struct nilfs_palloc_req *req)
{
struct nilfs_dat_entry *entry;
- __u64 start;
sector_t blocknr;
void *kaddr;
int ret;
@@ -169,7 +168,6 @@ int nilfs_dat_prepare_end(struct inode *dat, struct nilfs_palloc_req *req)
kaddr = kmap_atomic(req->pr_entry_bh->b_page);
entry = nilfs_palloc_block_get_entry(dat, req->pr_entry_nr,
req->pr_entry_bh, kaddr);
- start = le64_to_cpu(entry->de_start);
blocknr = le64_to_cpu(entry->de_blocknr);
kunmap_atomic(kaddr);
diff --git a/fs/nilfs2/segment.c b/fs/nilfs2/segment.c
index c6abbad9..11c06e9 100644
--- a/fs/nilfs2/segment.c
+++ b/fs/nilfs2/segment.c
@@ -2430,7 +2430,6 @@ static void nilfs_segctor_thread_construct(struct nilfs_sc_info *sci, int mode)
static void nilfs_segctor_do_immediate_flush(struct nilfs_sc_info *sci)
{
int mode = 0;
- int err;
spin_lock(&sci->sc_state_lock);
mode = (sci->sc_flush_request & FLUSH_DAT_BIT) ?
@@ -2438,7 +2437,7 @@ static void nilfs_segctor_do_immediate_flush(struct nilfs_sc_info *sci)
spin_unlock(&sci->sc_state_lock);
if (mode) {
- err = nilfs_segctor_do_construct(sci, mode);
+ nilfs_segctor_do_construct(sci, mode);
spin_lock(&sci->sc_state_lock);
sci->sc_flush_request &= (mode == SC_FLUSH_FILE) ?
diff --git a/fs/nilfs2/sufile.c b/fs/nilfs2/sufile.c
index 2a869c3..08e4c63 100644
--- a/fs/nilfs2/sufile.c
+++ b/fs/nilfs2/sufile.c
@@ -317,7 +317,7 @@ int nilfs_sufile_alloc(struct inode *sufile, __u64 *segnump)
size_t susz = NILFS_MDT(sufile)->mi_entry_size;
__u64 segnum, maxsegnum, last_alloc;
void *kaddr;
- unsigned long nsegments, ncleansegs, nsus, cnt;
+ unsigned long nsegments, nsus, cnt;
int ret, j;
down_write(&NILFS_MDT(sufile)->mi_sem);
@@ -327,7 +327,6 @@ int nilfs_sufile_alloc(struct inode *sufile, __u64 *segnump)
goto out_sem;
kaddr = kmap_atomic(header_bh->b_page);
header = kaddr + bh_offset(header_bh);
- ncleansegs = le64_to_cpu(header->sh_ncleansegs);
last_alloc = le64_to_cpu(header->sh_last_alloc);
kunmap_atomic(kaddr);
--
1.8.3.1
--
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