[JFFS2][XATTR] Remove jffs2_garbage_collect_xattr(c, ic)
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Sun May 21 14:59:05 EDT 2006
Commit: 084702e00111eb9ffb6d8a5c1938b8e5423e40a8
Parent: 8f2b6f49c656dd4597904f8c20661d6b73cdbbeb
Author: KaiGai Kohei <kaigai at ak.jp.nec.com>
AuthorDate: Sat May 13 15:16:13 2006 +0900
Commit: KaiGai Kohei <kaigai at ak.jp.nec.com>
CommitDate: Sat May 13 15:16:13 2006 +0900
[JFFS2][XATTR] Remove jffs2_garbage_collect_xattr(c, ic)
Remove jffs2_garbage_collect_xattr(c, ic).
jffs2_garbage_collect_xattr_datum/ref() are called from gc.c directly.
In original implementation, jffs2_garbage_collect_xattr(c, ic) returns
with holding a spinlock if 'ic' is inode_cache. But it returns after
releasing a spinlock if 'ic' is xattr_datum/ref.
It looks so confusable behavior. Thus, this patch makes caller manage
locking/unlocking.
[5/10] jffs2-xattr-v5.1-05-update_xattr_gc.patch
Signed-off-by: KaiGai Kohei <kaigai at ak.jp.nec.com>
fs/jffs2/gc.c | 21 +++++++++++------
fs/jffs2/xattr.c | 68 ++++++++++++++++--------------------------------------
fs/jffs2/xattr.h | 4 ++-
3 files changed, 36 insertions(+), 57 deletions(-)
diff --git a/fs/jffs2/gc.c b/fs/jffs2/gc.c
index 4ea1b7f..a5ef981 100644
--- a/fs/jffs2/gc.c
+++ b/fs/jffs2/gc.c
@@ -266,15 +266,22 @@ int jffs2_garbage_collect_pass(struct jf
ic = jffs2_raw_ref_to_ic(raw);
+#ifdef CONFIG_JFFS2_FS_XATTR
/* When 'ic' refers xattr_datum/xattr_ref, this node is GCed as xattr.
- We can decide whether this node is inode or xattr by ic->class.
- ret = 0 : ic is xattr_datum/xattr_ref, and GC was SUCCESSED.
- ret < 0 : ic is xattr_datum/xattr_ref, but GC was FAILED.
- ret > 0 : ic is NOT xattr_datum/xattr_ref.
- */
- ret = jffs2_garbage_collect_xattr(c, ic);
- if (ret <= 0)
+ * We can decide whether this node is inode or xattr by ic->class. */
+ if (ic->class == RAWNODE_CLASS_XATTR_DATUM
+ || ic->class == RAWNODE_CLASS_XATTR_REF) {
+ BUG_ON(raw->next_in_ino != (void *)ic);
+ spin_unlock(&c->erase_completion_lock);
+
+ if (ic->class == RAWNODE_CLASS_XATTR_DATUM) {
+ ret = jffs2_garbage_collect_xattr_datum(c, (struct jffs2_xattr_datum *)ic);
+ } else {
+ ret = jffs2_garbage_collect_xattr_ref(c, (struct jffs2_xattr_ref *)ic);
+ }
goto release_sem;
+ }
+#endif
/* We need to hold the inocache. Either the erase_completion_lock or
the inocache_lock are sufficient; we trade down since the inocache_lock
diff --git a/fs/jffs2/xattr.c b/fs/jffs2/xattr.c
index b16bc71..9c1f401 100644
--- a/fs/jffs2/xattr.c
+++ b/fs/jffs2/xattr.c
@@ -1170,104 +1170,76 @@ int do_jffs2_setxattr(struct inode *inod
* is used to move xdatum into new node.
* jffs2_garbage_collect_xattr_ref(c, ref)
* is used to move xref into new node.
- * jffs2_garbage_collect_xattr(c, ic)
- * is used to call appropriate garbage collector function, if argument
- * pointer (ic) is the reference of xdatum/xref.
* jffs2_verify_xattr(c)
* is used to call do_verify_xattr_datum() before garbage collecting.
* -------------------------------------------------- */
-static int jffs2_garbage_collect_xattr_datum(struct jffs2_sb_info *c,
- struct jffs2_xattr_datum *xd)
+int jffs2_garbage_collect_xattr_datum(struct jffs2_sb_info *c, struct jffs2_xattr_datum *xd)
{
- /* must be called under down_write(xattr_sem), and called from GC thread */
uint32_t phys_ofs, totlen, length, old_ofs;
- int rc;
+ int rc = -EINVAL;
+ down_write(&c->xattr_sem);
BUG_ON(!xd->node);
old_ofs = ref_offset(xd->node);
totlen = ref_totlen(c, c->gcblock, xd->node);
if (totlen < sizeof(struct jffs2_raw_xattr))
- return -EINVAL;
+ goto out;
if (!xd->xname) {
rc = load_xattr_datum(c, xd);
if (unlikely(rc > 0)) {
delete_xattr_datum_node(c, xd);
- return 0;
+ rc = 0;
+ goto out;
} else if (unlikely(rc < 0))
- return -EINVAL;
+ goto out;
}
rc = jffs2_reserve_space_gc(c, totlen, &phys_ofs, &length, JFFS2_SUMMARY_XATTR_SIZE);
if (rc || length < totlen) {
JFFS2_WARNING("jffs2_reserve_space()=%d, request=%u\n", rc, totlen);
- return rc ? rc : -EBADFD;
+ rc = rc ? rc : -EBADFD;
+ goto out;
}
rc = save_xattr_datum(c, xd, phys_ofs);
if (!rc)
dbg_xattr("xdatum (xid=%u, version=%u) GC'ed from %#08x to %08x\n",
xd->xid, xd->version, old_ofs, ref_offset(xd->node));
+ out:
+ up_write(&c->xattr_sem);
return rc;
}
-static int jffs2_garbage_collect_xattr_ref(struct jffs2_sb_info *c,
- struct jffs2_xattr_ref *ref)
+int jffs2_garbage_collect_xattr_ref(struct jffs2_sb_info *c, struct jffs2_xattr_ref *ref)
{
- /* must be called under down(alloc_sem) */
uint32_t phys_ofs, totlen, length, old_ofs;
- int rc;
+ int rc = -EINVAL;
+ down_write(&c->xattr_sem);
BUG_ON(!ref->node);
old_ofs = ref_offset(ref->node);
totlen = ref_totlen(c, c->gcblock, ref->node);
if (totlen != sizeof(struct jffs2_raw_xref))
- return -EINVAL;
+ goto out;
+
rc = jffs2_reserve_space_gc(c, totlen, &phys_ofs, &length, JFFS2_SUMMARY_XREF_SIZE);
if (rc || length < totlen) {
JFFS2_WARNING("%s: jffs2_reserve_space() = %d, request = %u\n",
__FUNCTION__, rc, totlen);
- return rc ? rc : -EBADFD;
+ rc = rc ? rc : -EBADFD;
+ goto out;
}
rc = save_xattr_ref(c, ref, phys_ofs);
if (!rc)
dbg_xattr("xref (ino=%u, xid=%u) GC'ed from %#08x to %08x\n",
ref->ic->ino, ref->xd->xid, old_ofs, ref_offset(ref->node));
+ out:
+ up_write(&c->xattr_sem);
return rc;
}
-int jffs2_garbage_collect_xattr(struct jffs2_sb_info *c, struct jffs2_inode_cache *ic)
-{
- struct jffs2_xattr_datum *xd;
- struct jffs2_xattr_ref *ref;
- int ret;
-
- switch (ic->class) {
- case RAWNODE_CLASS_XATTR_DATUM:
- spin_unlock(&c->erase_completion_lock);
-
- down_write(&c->xattr_sem);
- xd = (struct jffs2_xattr_datum *)ic;
- ret = xd ? jffs2_garbage_collect_xattr_datum(c, xd) : 0;
- up_write(&c->xattr_sem);
- break;
- case RAWNODE_CLASS_XATTR_REF:
- spin_unlock(&c->erase_completion_lock);
-
- down_write(&c->xattr_sem);
- ref = (struct jffs2_xattr_ref *)ic;
- ret = ref ? jffs2_garbage_collect_xattr_ref(c, ref) : 0;
- up_write(&c->xattr_sem);
- break;
- default:
- /* This node is not xattr_datum/xattr_ref */
- ret = 1;
- break;
- }
- return ret;
-}
-
int jffs2_verify_xattr(struct jffs2_sb_info *c)
{
struct jffs2_xattr_datum *xd, *_xd;
diff --git a/fs/jffs2/xattr.h b/fs/jffs2/xattr.h
index 0360097..762814b 100644
--- a/fs/jffs2/xattr.h
+++ b/fs/jffs2/xattr.h
@@ -69,7 +69,8 @@ extern struct jffs2_xattr_datum *jffs2_s
extern void jffs2_xattr_delete_inode(struct jffs2_sb_info *c, struct jffs2_inode_cache *ic);
extern void jffs2_xattr_free_inode(struct jffs2_sb_info *c, struct jffs2_inode_cache *ic);
-extern int jffs2_garbage_collect_xattr(struct jffs2_sb_info *c, struct jffs2_inode_cache *ic);
+extern int jffs2_garbage_collect_xattr_datum(struct jffs2_sb_info *c, struct jffs2_xattr_datum *xd);
+extern int jffs2_garbage_collect_xattr_ref(struct jffs2_sb_info *c, struct jffs2_xattr_ref *ref);
extern int jffs2_verify_xattr(struct jffs2_sb_info *c);
extern int do_jffs2_getxattr(struct inode *inode, int xprefix, const char *xname,
@@ -94,7 +95,6 @@ #define jffs2_clear_xattr_subsystem(c)
#define jffs2_xattr_delete_inode(c, ic)
#define jffs2_xattr_free_inode(c, ic)
-#define jffs2_garbage_collect_xattr(c, ic) (1)
#define jffs2_verify_xattr(c) (1)
#define jffs2_xattr_handlers NULL
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