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authorDavid Woodhouse <dwmw2@infradead.org>2006-05-20 16:20:19 +0100
committerDavid Woodhouse <dwmw2@infradead.org>2006-05-20 16:20:19 +0100
commit1417fc44ee923418df3adadeb4846c891bba1ba5 (patch)
tree07e58ced7665ec94dad951175795ed3cbf11513c /fs/jffs2
parent9641b784ff82cf0a48a6c70ef9867f5fd728de67 (diff)
downloadop-kernel-dev-1417fc44ee923418df3adadeb4846c891bba1ba5.zip
op-kernel-dev-1417fc44ee923418df3adadeb4846c891bba1ba5.tar.gz
[JFFS2] Reduce calls to ref_totlen() in jffs2_mark_node_obsolete()
We were calling ref_totlen() 18 times. Even before that becomes a real function rather than just a dereference, apparently some compilers still suck anyway. It'll _certainly_ suck after ref_totlen() becomes more complicated, so calculate it once and don't rely on CSE. Signed-off-by: David Woodhouse <dwmw2@infradead.org>
Diffstat (limited to 'fs/jffs2')
-rw-r--r--fs/jffs2/nodemgmt.c39
1 files changed, 21 insertions, 18 deletions
diff --git a/fs/jffs2/nodemgmt.c b/fs/jffs2/nodemgmt.c
index 49127a1..0e1f58a 100644
--- a/fs/jffs2/nodemgmt.c
+++ b/fs/jffs2/nodemgmt.c
@@ -470,6 +470,7 @@ void jffs2_mark_node_obsolete(struct jffs2_sb_info *c, struct jffs2_raw_node_ref
struct jffs2_unknown_node n;
int ret, addedsize;
size_t retlen;
+ uint32_t freed_len;
if(!ref) {
printk(KERN_NOTICE "EEEEEK. jffs2_mark_node_obsolete called with NULL node\n");
@@ -499,32 +500,34 @@ void jffs2_mark_node_obsolete(struct jffs2_sb_info *c, struct jffs2_raw_node_ref
spin_lock(&c->erase_completion_lock);
+ freed_len = ref_totlen(c, jeb, ref);
+
if (ref_flags(ref) == REF_UNCHECKED) {
- D1(if (unlikely(jeb->unchecked_size < ref_totlen(c, jeb, ref))) {
+ D1(if (unlikely(jeb->unchecked_size < freed_len)) {
printk(KERN_NOTICE "raw unchecked node of size 0x%08x freed from erase block %d at 0x%08x, but unchecked_size was already 0x%08x\n",
- ref_totlen(c, jeb, ref), blocknr, ref->flash_offset, jeb->used_size);
+ freed_len, blocknr, ref->flash_offset, jeb->used_size);
BUG();
})
- D1(printk(KERN_DEBUG "Obsoleting previously unchecked node at 0x%08x of len %x: ", ref_offset(ref), ref_totlen(c, jeb, ref)));
- jeb->unchecked_size -= ref_totlen(c, jeb, ref);
- c->unchecked_size -= ref_totlen(c, jeb, ref);
+ D1(printk(KERN_DEBUG "Obsoleting previously unchecked node at 0x%08x of len %x: ", ref_offset(ref), freed_len));
+ jeb->unchecked_size -= freed_len;
+ c->unchecked_size -= freed_len;
} else {
- D1(if (unlikely(jeb->used_size < ref_totlen(c, jeb, ref))) {
+ D1(if (unlikely(jeb->used_size < freed_len)) {
printk(KERN_NOTICE "raw node of size 0x%08x freed from erase block %d at 0x%08x, but used_size was already 0x%08x\n",
- ref_totlen(c, jeb, ref), blocknr, ref->flash_offset, jeb->used_size);
+ freed_len, blocknr, ref->flash_offset, jeb->used_size);
BUG();
})
- D1(printk(KERN_DEBUG "Obsoleting node at 0x%08x of len %#x: ", ref_offset(ref), ref_totlen(c, jeb, ref)));
- jeb->used_size -= ref_totlen(c, jeb, ref);
- c->used_size -= ref_totlen(c, jeb, ref);
+ D1(printk(KERN_DEBUG "Obsoleting node at 0x%08x of len %#x: ", ref_offset(ref), freed_len));
+ jeb->used_size -= freed_len;
+ c->used_size -= freed_len;
}
// Take care, that wasted size is taken into concern
- if ((jeb->dirty_size || ISDIRTY(jeb->wasted_size + ref_totlen(c, jeb, ref))) && jeb != c->nextblock) {
+ if ((jeb->dirty_size || ISDIRTY(jeb->wasted_size + freed_len)) && jeb != c->nextblock) {
D1(printk(KERN_DEBUG "Dirtying\n"));
- addedsize = ref_totlen(c, jeb, ref);
- jeb->dirty_size += ref_totlen(c, jeb, ref);
- c->dirty_size += ref_totlen(c, jeb, ref);
+ addedsize = freed_len;
+ jeb->dirty_size += freed_len;
+ c->dirty_size += freed_len;
/* Convert wasted space to dirty, if not a bad block */
if (jeb->wasted_size) {
@@ -545,8 +548,8 @@ void jffs2_mark_node_obsolete(struct jffs2_sb_info *c, struct jffs2_raw_node_ref
} else {
D1(printk(KERN_DEBUG "Wasting\n"));
addedsize = 0;
- jeb->wasted_size += ref_totlen(c, jeb, ref);
- c->wasted_size += ref_totlen(c, jeb, ref);
+ jeb->wasted_size += freed_len;
+ c->wasted_size += freed_len;
}
ref->flash_offset = ref_offset(ref) | REF_OBSOLETE;
@@ -634,8 +637,8 @@ void jffs2_mark_node_obsolete(struct jffs2_sb_info *c, struct jffs2_raw_node_ref
printk(KERN_WARNING "Short read from obsoleted node at 0x%08x: %zd\n", ref_offset(ref), retlen);
goto out_erase_sem;
}
- if (PAD(je32_to_cpu(n.totlen)) != PAD(ref_totlen(c, jeb, ref))) {
- printk(KERN_WARNING "Node totlen on flash (0x%08x) != totlen from node ref (0x%08x)\n", je32_to_cpu(n.totlen), ref_totlen(c, jeb, ref));
+ if (PAD(je32_to_cpu(n.totlen)) != PAD(freed_len)) {
+ printk(KERN_WARNING "Node totlen on flash (0x%08x) != totlen from node ref (0x%08x)\n", je32_to_cpu(n.totlen), freed_len);
goto out_erase_sem;
}
if (!(je16_to_cpu(n.nodetype) & JFFS2_NODE_ACCURATE)) {
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