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[JFFS2] Reduce visibility of raw_node_ref to upper layers of JFFS2 code.

Explorar el Código 
As the first step towards eliminating the ref->next_phys member and saving
memory by using an _array_ of struct jffs2_raw_node_ref per eraseblock,
stop the write functions from allocating their own refs; have them just
_reserve_ the appropriate number instead. Then jffs2_link_node_ref() can
just fill them in.

Use a linked list of pre-allocated refs in the superblock, for now. Once
we switch to an array, it'll just be a case of extending that array.

Signed-off-by: David Woodhouse <dwmw2@infradead.org>
Este commit está contenido en:
David Woodhouse
2006-05-24 02:04:45 +01:00
padre 4cbb9b80e1
commit 2f785402f3
Se han modificado 12 ficheros con 205 adiciones y 350 borrados
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38
fs/jffs2/xattr.c
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@@ -304,8 +304,8 @@ static int load_xattr_datum(struct jffs2_sb_info *c, struct jffs2_xattr_datum *x
static int save_xattr_datum(struct jffs2_sb_info *c, struct jffs2_xattr_datum *xd)
{
/* must be called under down_write(xattr_sem) */
struct jffs2_raw_xattr rx;
struct jffs2_raw_node_ref *raw;
struct jffs2_raw_xattr rx;
struct kvec vecs[2];
uint32_t length;
int rc, totlen;
@@ -319,11 +319,6 @@ static int save_xattr_datum(struct jffs2_sb_info *c, struct jffs2_xattr_datum *x
vecs[1].iov_len = xd->name_len + 1 + xd->value_len;
totlen = vecs[0].iov_len + vecs[1].iov_len;
raw = jffs2_alloc_raw_node_ref();
if (!raw)
return -ENOMEM;
raw->flash_offset = phys_ofs;
/* Setup raw-xattr */
rx.magic = cpu_to_je16(JFFS2_MAGIC_BITMASK);
rx.nodetype = cpu_to_je16(JFFS2_NODETYPE_XATTR);
@@ -343,19 +338,14 @@ static int save_xattr_datum(struct jffs2_sb_info *c, struct jffs2_xattr_datum *x
JFFS2_WARNING("jffs2_flash_writev()=%d, req=%u, wrote=%u, at %#08x\n",
rc, totlen, length, phys_ofs);
rc = rc ? rc : -EIO;
if (length) {
raw->flash_offset |= REF_OBSOLETE;
jffs2_add_physical_node_ref(c, raw, PAD(totlen), NULL);
jffs2_mark_node_obsolete(c, raw);
} else {
jffs2_free_raw_node_ref(raw);
}
if (length)
jffs2_add_physical_node_ref(c, phys_ofs | REF_OBSOLETE, PAD(totlen), NULL);
return rc;
}
/* success */
raw->flash_offset |= REF_PRISTINE;
jffs2_add_physical_node_ref(c, raw, PAD(totlen), NULL);
raw = jffs2_add_physical_node_ref(c, phys_ofs | REF_PRISTINE, PAD(totlen), NULL);
/* FIXME */ raw->next_in_ino = (void *)xd;
if (xd->node)
@@ -563,11 +553,6 @@ static int save_xattr_ref(struct jffs2_sb_info *c, struct jffs2_xattr_ref *ref)
uint32_t phys_ofs = write_ofs(c);
int ret;
raw = jffs2_alloc_raw_node_ref();
if (!raw)
return -ENOMEM;
raw->flash_offset = phys_ofs;
rr.magic = cpu_to_je16(JFFS2_MAGIC_BITMASK);
rr.nodetype = cpu_to_je16(JFFS2_NODETYPE_XREF);
rr.totlen = cpu_to_je32(PAD(sizeof(rr)));
@@ -582,18 +567,13 @@ static int save_xattr_ref(struct jffs2_sb_info *c, struct jffs2_xattr_ref *ref)
JFFS2_WARNING("jffs2_flash_write() returned %d, request=%u, retlen=%u, at %#08x\n",
ret, sizeof(rr), length, phys_ofs);
ret = ret ? ret : -EIO;
if (length) {
raw->flash_offset |= REF_OBSOLETE;
jffs2_add_physical_node_ref(c, raw, PAD(sizeof(rr)), NULL);
jffs2_mark_node_obsolete(c, raw);
} else {
jffs2_free_raw_node_ref(raw);
}
if (length)
jffs2_add_physical_node_ref(c, phys_ofs | REF_OBSOLETE, PAD(sizeof(rr)), NULL);
return ret;
}
raw->flash_offset |= REF_PRISTINE;
jffs2_add_physical_node_ref(c, raw, PAD(sizeof(rr)), NULL);
raw = jffs2_add_physical_node_ref(c, phys_ofs | REF_PRISTINE, PAD(sizeof(rr)), NULL);
/* FIXME */ raw->next_in_ino = (void *)ref;
if (ref->node)
delete_xattr_ref_node(c, ref);