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authorLinus Torvalds <torvalds@g5.osdl.org>2006-07-04 04:29:08 (GMT)
committerLinus Torvalds <torvalds@g5.osdl.org>2006-07-04 04:29:08 (GMT)
commit0d1782144e81faf6203075c5fcd0a2f0db91af5b (patch)
tree761dd18870e97ec9c6c14bc1c4db1429065483c0 /fs
parent67ab33db8be1cd466c09dfcba334d69d3e2f92e6 (diff)
parentc7afb0f97700e73109564f83c35bfeeb14cb653b (diff)
Merge git://git.infradead.org/mtd-2.6
* git://git.infradead.org/mtd-2.6: [JFFS2][XATTR] Fix memory leak in POSIX-ACL support fs/jffs2/: make 2 functions static [MTD] NAND: Fix broken sharpsl driver [JFFS2][XATTR] Fix xd->refcnt race condition MTD: kernel-doc fixes + additions MTD: fix all kernel-doc warnings [MTD] DOC: Fixup read functions and do a little cleanup
Diffstat (limited to 'fs')
-rw-r--r--fs/jffs2/acl.c4
-rw-r--r--fs/jffs2/acl.h4
-rw-r--r--fs/jffs2/malloc.c2
-rw-r--r--fs/jffs2/nodelist.h2
-rw-r--r--fs/jffs2/readinode.c1
-rw-r--r--fs/jffs2/scan.c4
-rw-r--r--fs/jffs2/xattr.c45
7 files changed, 29 insertions, 33 deletions
diff --git a/fs/jffs2/acl.c b/fs/jffs2/acl.c
index 9c2077e..0ae3cd1 100644
--- a/fs/jffs2/acl.c
+++ b/fs/jffs2/acl.c
@@ -345,10 +345,8 @@ int jffs2_init_acl(struct inode *inode, struct inode *dir)
return rc;
}
-void jffs2_clear_acl(struct inode *inode)
+void jffs2_clear_acl(struct jffs2_inode_info *f)
{
- struct jffs2_inode_info *f = JFFS2_INODE_INFO(inode);
-
if (f->i_acl_access && f->i_acl_access != JFFS2_ACL_NOT_CACHED) {
posix_acl_release(f->i_acl_access);
f->i_acl_access = JFFS2_ACL_NOT_CACHED;
diff --git a/fs/jffs2/acl.h b/fs/jffs2/acl.h
index 8893bd1..fa327db 100644
--- a/fs/jffs2/acl.h
+++ b/fs/jffs2/acl.h
@@ -30,7 +30,7 @@ struct jffs2_acl_header {
extern int jffs2_permission(struct inode *, int, struct nameidata *);
extern int jffs2_acl_chmod(struct inode *);
extern int jffs2_init_acl(struct inode *, struct inode *);
-extern void jffs2_clear_acl(struct inode *);
+extern void jffs2_clear_acl(struct jffs2_inode_info *);
extern struct xattr_handler jffs2_acl_access_xattr_handler;
extern struct xattr_handler jffs2_acl_default_xattr_handler;
@@ -40,6 +40,6 @@ extern struct xattr_handler jffs2_acl_default_xattr_handler;
#define jffs2_permission NULL
#define jffs2_acl_chmod(inode) (0)
#define jffs2_init_acl(inode,dir) (0)
-#define jffs2_clear_acl(inode)
+#define jffs2_clear_acl(f)
#endif /* CONFIG_JFFS2_FS_POSIX_ACL */
diff --git a/fs/jffs2/malloc.c b/fs/jffs2/malloc.c
index 8310c95..33f2910 100644
--- a/fs/jffs2/malloc.c
+++ b/fs/jffs2/malloc.c
@@ -190,7 +190,7 @@ void jffs2_free_tmp_dnode_info(struct jffs2_tmp_dnode_info *x)
kmem_cache_free(tmp_dnode_info_slab, x);
}
-struct jffs2_raw_node_ref *jffs2_alloc_refblock(void)
+static struct jffs2_raw_node_ref *jffs2_alloc_refblock(void)
{
struct jffs2_raw_node_ref *ret;
diff --git a/fs/jffs2/nodelist.h b/fs/jffs2/nodelist.h
index f752baa..cae92c1 100644
--- a/fs/jffs2/nodelist.h
+++ b/fs/jffs2/nodelist.h
@@ -426,8 +426,6 @@ char *jffs2_getlink(struct jffs2_sb_info *c, struct jffs2_inode_info *f);
/* scan.c */
int jffs2_scan_medium(struct jffs2_sb_info *c);
void jffs2_rotate_lists(struct jffs2_sb_info *c);
-int jffs2_fill_scan_buf(struct jffs2_sb_info *c, void *buf,
- uint32_t ofs, uint32_t len);
struct jffs2_inode_cache *jffs2_scan_make_ino_cache(struct jffs2_sb_info *c, uint32_t ino);
int jffs2_scan_classify_jeb(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb);
int jffs2_scan_dirty_space(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb, uint32_t size);
diff --git a/fs/jffs2/readinode.c b/fs/jffs2/readinode.c
index cc18992..266423b 100644
--- a/fs/jffs2/readinode.c
+++ b/fs/jffs2/readinode.c
@@ -968,6 +968,7 @@ void jffs2_do_clear_inode(struct jffs2_sb_info *c, struct jffs2_inode_info *f)
struct jffs2_full_dirent *fd, *fds;
int deleted;
+ jffs2_clear_acl(f);
jffs2_xattr_delete_inode(c, f->inocache);
down(&f->sem);
deleted = f->inocache && !f->inocache->nlink;
diff --git a/fs/jffs2/scan.c b/fs/jffs2/scan.c
index 2bfdc33..e241346 100644
--- a/fs/jffs2/scan.c
+++ b/fs/jffs2/scan.c
@@ -274,8 +274,8 @@ int jffs2_scan_medium(struct jffs2_sb_info *c)
return ret;
}
-int jffs2_fill_scan_buf (struct jffs2_sb_info *c, void *buf,
- uint32_t ofs, uint32_t len)
+static int jffs2_fill_scan_buf(struct jffs2_sb_info *c, void *buf,
+ uint32_t ofs, uint32_t len)
{
int ret;
size_t retlen;
diff --git a/fs/jffs2/xattr.c b/fs/jffs2/xattr.c
index 18e66db..25bc1ae 100644
--- a/fs/jffs2/xattr.c
+++ b/fs/jffs2/xattr.c
@@ -50,9 +50,10 @@
* is used to write xdatum to medium. xd->version will be incremented.
* create_xattr_datum(c, xprefix, xname, xvalue, xsize)
* is used to create new xdatum and write to medium.
- * delete_xattr_datum(c, xd)
- * is used to delete a xdatum. It marks xd JFFS2_XFLAGS_DEAD, and allows
- * GC to reclaim those physical nodes.
+ * unrefer_xattr_datum(c, xd)
+ * is used to delete a xdatum. When nobody refers this xdatum, JFFS2_XFLAGS_DEAD
+ * is set on xd->flags and chained xattr_dead_list or release it immediately.
+ * In the first case, the garbage collector release it later.
* -------------------------------------------------- */
static uint32_t xattr_datum_hashkey(int xprefix, const char *xname, const char *xvalue, int xsize)
{
@@ -394,22 +395,24 @@ static struct jffs2_xattr_datum *create_xattr_datum(struct jffs2_sb_info *c,
return xd;
}
-static void delete_xattr_datum(struct jffs2_sb_info *c, struct jffs2_xattr_datum *xd)
+static void unrefer_xattr_datum(struct jffs2_sb_info *c, struct jffs2_xattr_datum *xd)
{
/* must be called under down_write(xattr_sem) */
- BUG_ON(atomic_read(&xd->refcnt));
+ if (atomic_dec_and_lock(&xd->refcnt, &c->erase_completion_lock)) {
+ uint32_t xid = xd->xid, version = xd->version;
- unload_xattr_datum(c, xd);
- xd->flags |= JFFS2_XFLAGS_DEAD;
- spin_lock(&c->erase_completion_lock);
- if (xd->node == (void *)xd) {
- BUG_ON(!(xd->flags & JFFS2_XFLAGS_INVALID));
- jffs2_free_xattr_datum(xd);
- } else {
- list_add(&xd->xindex, &c->xattr_dead_list);
+ unload_xattr_datum(c, xd);
+ xd->flags |= JFFS2_XFLAGS_DEAD;
+ if (xd->node == (void *)xd) {
+ BUG_ON(!(xd->flags & JFFS2_XFLAGS_INVALID));
+ jffs2_free_xattr_datum(xd);
+ } else {
+ list_add(&xd->xindex, &c->xattr_dead_list);
+ }
+ spin_unlock(&c->erase_completion_lock);
+
+ dbg_xattr("xdatum(xid=%u, version=%u) was removed.\n", xid, version);
}
- spin_unlock(&c->erase_completion_lock);
- dbg_xattr("xdatum(xid=%u, version=%u) was removed.\n", xd->xid, xd->version);
}
/* -------- xref related functions ------------------
@@ -580,8 +583,7 @@ static void delete_xattr_ref(struct jffs2_sb_info *c, struct jffs2_xattr_ref *re
dbg_xattr("xref(ino=%u, xid=%u, xseqno=%u) was removed.\n",
ref->ino, ref->xid, ref->xseqno);
- if (atomic_dec_and_test(&xd->refcnt))
- delete_xattr_datum(c, xd);
+ unrefer_xattr_datum(c, xd);
}
void jffs2_xattr_delete_inode(struct jffs2_sb_info *c, struct jffs2_inode_cache *ic)
@@ -1119,8 +1121,7 @@ int do_jffs2_setxattr(struct inode *inode, int xprefix, const char *xname,
ref->next = c->xref_dead_list;
c->xref_dead_list = ref;
spin_unlock(&c->erase_completion_lock);
- if (atomic_dec_and_test(&xd->refcnt))
- delete_xattr_datum(c, xd);
+ unrefer_xattr_datum(c, xd);
} else {
ref->ic = ic;
ref->xd = xd;
@@ -1156,8 +1157,7 @@ int do_jffs2_setxattr(struct inode *inode, int xprefix, const char *xname,
down_write(&c->xattr_sem);
if (rc) {
JFFS2_WARNING("jffs2_reserve_space()=%d, request=%u\n", rc, request);
- if (atomic_dec_and_test(&xd->refcnt))
- delete_xattr_datum(c, xd);
+ unrefer_xattr_datum(c, xd);
up_write(&c->xattr_sem);
return rc;
}
@@ -1170,8 +1170,7 @@ int do_jffs2_setxattr(struct inode *inode, int xprefix, const char *xname,
ic->xref = ref;
}
rc = PTR_ERR(newref);
- if (atomic_dec_and_test(&xd->refcnt))
- delete_xattr_datum(c, xd);
+ unrefer_xattr_datum(c, xd);
} else if (ref) {
delete_xattr_ref(c, ref);
}

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