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@lab.ntt.co.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/fs/nilfs2/alloc.c b/fs/nilfs2/alloc.c
index b335a32..2ccbf55 100644 (file)
--- a/fs/nilfs2/alloc.c
+++ b/fs/nilfs2/alloc.c
@@ -514,7 +514,7 @@ 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;
        spinlock_t *lock;
        int pos, ret;
@@ -523,7 +523,6 @@ 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 (file)
--- 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 (file)
--- 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 3fc4732..3b65ada 100644 (file)
--- a/fs/nilfs2/segment.c
+++ b/fs/nilfs2/segment.c
@@ -2492,7 +2492,6 @@ 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) ?
@@ -2500,7 +2499,7 @@ 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 7ff8f15..52821ff 100644 (file)
--- a/fs/nilfs2/sufile.c
+++ b/fs/nilfs2/sufile.c
@@ -319,7 +319,7 @@ 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);
@@ -329,7 +329,6 @@ 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);