AcoSail/kernel_optimize_test
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[JFFS2] Deletion dirents should be REF_NORMAL, not REF_PRISTINE.

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Otherwise they'll never actually get garbage-collected.
Noted by Jonathan Larmour.

Signed-off-by: David Woodhouse <dwmw2@infradead.org>
This commit is contained in:
David Woodhouse 2007-06-29 13:39:57 +01:00
parent 5bd5c03c31
commit 71c2339775
4 changed files with 10 additions and 3 deletions
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5
fs/jffs2/nodelist.h
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@ -139,6 +139,11 @@ static inline struct jffs2_inode_cache *jffs2_raw_ref_to_ic(struct jffs2_raw_nod
#define ref_obsolete(ref) (((ref)->flash_offset & 3) == REF_OBSOLETE)
#define mark_ref_normal(ref) do { (ref)->flash_offset = ref_offset(ref) | REF_NORMAL; } while(0)
/* Dirent nodes should be REF_PRISTINE only if they are not a deletion
dirent. Deletion dirents should be REF_NORMAL so that GC gets to
throw them away when appropriate */
#define dirent_node_state(rd) ( (je32_to_cpu((rd)->ino)?REF_PRISTINE:REF_NORMAL) )
/* NB: REF_PRISTINE for an inode-less node (ref->next_in_ino == NULL) indicates
it is an unknown node of type JFFS2_NODETYPE_RWCOMPAT_COPY, so it'll get
copied. If you need to do anything different to GC inode-less nodes, then

2
fs/jffs2/readinode.c
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@ -613,7 +613,7 @@ static inline int read_direntry(struct jffs2_sb_info *c, struct jffs2_raw_node_r
jeb->unchecked_size -= len;
c->used_size += len;
c->unchecked_size -= len;
ref->flash_offset = ref_offset(ref) | REF_PRISTINE;
ref->flash_offset = ref_offset(ref) | dirent_node_state(rd);
spin_unlock(&c->erase_completion_lock);
}

3
fs/jffs2/scan.c
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@ -1049,7 +1049,8 @@ static int jffs2_scan_dirent_node(struct jffs2_sb_info *c, struct jffs2_eraseblo
return -ENOMEM;
}
fd->raw = jffs2_link_node_ref(c, jeb, ofs | REF_PRISTINE, PAD(je32_to_cpu(rd->totlen)), ic);
fd->raw = jffs2_link_node_ref(c, jeb, ofs | dirent_node_state(rd),
PAD(je32_to_cpu(rd->totlen)), ic);
fd->next = NULL;
fd->version = je32_to_cpu(rd->version);

3
fs/jffs2/write.c
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@ -296,7 +296,8 @@ struct jffs2_full_dirent *jffs2_write_dirent(struct jffs2_sb_info *c, struct jff
return ERR_PTR(ret?ret:-EIO);
}
/* Mark the space used */
fd->raw = jffs2_add_physical_node_ref(c, flash_ofs | REF_PRISTINE, PAD(sizeof(*rd)+namelen), f->inocache);
fd->raw = jffs2_add_physical_node_ref(c, flash_ofs | dirent_node_state(rd),
PAD(sizeof(*rd)+namelen), f->inocache);
if (IS_ERR(fd->raw)) {
void *hold_err = fd->raw;
/* Release the full_dirent which is now useless, and return */