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[JFFS2][XATTR] using 'delete marker' for xdatum/xref deletion

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- When xdatum is removed, a new xdatum with 'delete marker' is
  written. (version==0xffffffff means 'delete marker')
- When xref is removed, a new xref with 'delete marker' is written.
  (odd-numbered xseqno means 'delete marker')

- delete_xattr_(datum/xref)_delay() are new deletion functions
  are added. We can only use them if we can detect the target
  obsolete xdatum/xref as a orphan or errir one.
  (e.g when inode deletion, or detecting crc error)

[1/3] jffs2-xattr-v6-01-delete_marker.patch

Signed-off-by: KaiGai Kohei <kaigai@ak.jp.nec.com>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
This commit is contained in:
KaiGai Kohei 2006-06-11 10:35:15 +09:00 committed by David Woodhouse
parent 6d4f8224d4
commit c9f700f840
10 changed files with 586 additions and 341 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

19
fs/jffs2/erase.c
View File

@ -230,7 +230,6 @@ static inline void jffs2_remove_node_refs_from_ino_list(struct jffs2_sb_info *c,
at the end of the linked list. Stash it and continue at the end of the linked list. Stash it and continue
from the beginning of the list */ from the beginning of the list */
ic = (struct jffs2_inode_cache *)(*prev); ic = (struct jffs2_inode_cache *)(*prev);
BUG_ON(ic->class != RAWNODE_CLASS_INODE_CACHE);
prev = &ic->nodes; prev = &ic->nodes;
continue; continue;
} }
@ -254,7 +253,8 @@ static inline void jffs2_remove_node_refs_from_ino_list(struct jffs2_sb_info *c,
/* PARANOIA */ /* PARANOIA */
if (!ic) { if (!ic) {
printk(KERN_WARNING "inode_cache not found in remove_node_refs()!!\n"); JFFS2_WARNING("inode_cache/xattr_datum/xattr_ref"
" not found in remove_node_refs()!!\n");
return; return;
} }
@ -279,8 +279,19 @@ static inline void jffs2_remove_node_refs_from_ino_list(struct jffs2_sb_info *c,
printk("\n"); printk("\n");
}); });
if (ic->nodes == (void *)ic && ic->nlink == 0) switch (ic->class) {
jffs2_del_ino_cache(c, ic); #ifdef CONFIG_JFFS2_FS_XATTR
case RAWNODE_CLASS_XATTR_DATUM:
jffs2_release_xattr_datum(c, (struct jffs2_xattr_datum *)ic);
break;
case RAWNODE_CLASS_XATTR_REF:
jffs2_release_xattr_ref(c, (struct jffs2_xattr_ref *)ic);
break;
#endif
default:
if (ic->nodes == (void *)ic && ic->nlink == 0)
jffs2_del_ino_cache(c, ic);
}
} }
void jffs2_free_jeb_node_refs(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb) void jffs2_free_jeb_node_refs(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb)

5
fs/jffs2/gc.c
View File

@ -275,13 +275,12 @@ int jffs2_garbage_collect_pass(struct jffs2_sb_info *c)
* We can decide whether this node is inode or xattr by ic->class. */ * We can decide whether this node is inode or xattr by ic->class. */
if (ic->class == RAWNODE_CLASS_XATTR_DATUM if (ic->class == RAWNODE_CLASS_XATTR_DATUM
|| ic->class == RAWNODE_CLASS_XATTR_REF) { || ic->class == RAWNODE_CLASS_XATTR_REF) {
BUG_ON(raw->next_in_ino != (void *)ic);
spin_unlock(&c->erase_completion_lock); spin_unlock(&c->erase_completion_lock);
if (ic->class == RAWNODE_CLASS_XATTR_DATUM) { if (ic->class == RAWNODE_CLASS_XATTR_DATUM) {
ret = jffs2_garbage_collect_xattr_datum(c, (struct jffs2_xattr_datum *)ic); ret = jffs2_garbage_collect_xattr_datum(c, (struct jffs2_xattr_datum *)ic, raw);
} else { } else {
ret = jffs2_garbage_collect_xattr_ref(c, (struct jffs2_xattr_ref *)ic); ret = jffs2_garbage_collect_xattr_ref(c, (struct jffs2_xattr_ref *)ic, raw);
} }
goto release_sem; goto release_sem;
} }

3
fs/jffs2/jffs2_fs_sb.h
View File

@ -119,8 +119,11 @@ struct jffs2_sb_info {
#ifdef CONFIG_JFFS2_FS_XATTR #ifdef CONFIG_JFFS2_FS_XATTR
#define XATTRINDEX_HASHSIZE (57) #define XATTRINDEX_HASHSIZE (57)
uint32_t highest_xid; uint32_t highest_xid;
uint32_t highest_xseqno;
struct list_head xattrindex[XATTRINDEX_HASHSIZE]; struct list_head xattrindex[XATTRINDEX_HASHSIZE];
struct list_head xattr_unchecked; struct list_head xattr_unchecked;
struct list_head xattr_dead_list;
struct jffs2_xattr_ref *xref_dead_list;
struct jffs2_xattr_ref *xref_temp; struct jffs2_xattr_ref *xref_temp;
struct rw_semaphore xattr_sem; struct rw_semaphore xattr_sem;
uint32_t xdatum_mem_usage; uint32_t xdatum_mem_usage;

2
fs/jffs2/malloc.c
View File

@ -291,6 +291,7 @@ struct jffs2_xattr_datum *jffs2_alloc_xattr_datum(void)
memset(xd, 0, sizeof(struct jffs2_xattr_datum)); memset(xd, 0, sizeof(struct jffs2_xattr_datum));
xd->class = RAWNODE_CLASS_XATTR_DATUM; xd->class = RAWNODE_CLASS_XATTR_DATUM;
xd->node = (void *)xd;
INIT_LIST_HEAD(&xd->xindex); INIT_LIST_HEAD(&xd->xindex);
return xd; return xd;
} }
@ -309,6 +310,7 @@ struct jffs2_xattr_ref *jffs2_alloc_xattr_ref(void)
memset(ref, 0, sizeof(struct jffs2_xattr_ref)); memset(ref, 0, sizeof(struct jffs2_xattr_ref));
ref->class = RAWNODE_CLASS_XATTR_REF; ref->class = RAWNODE_CLASS_XATTR_REF;
ref->node = (void *)ref;
return ref; return ref;
} }

21
fs/jffs2/nodemgmt.c
View File

@ -684,19 +684,26 @@ void jffs2_mark_node_obsolete(struct jffs2_sb_info *c, struct jffs2_raw_node_ref
spin_lock(&c->erase_completion_lock); spin_lock(&c->erase_completion_lock);
ic = jffs2_raw_ref_to_ic(ref); ic = jffs2_raw_ref_to_ic(ref);
/* It seems we should never call jffs2_mark_node_obsolete() for
XATTR nodes.... yet. Make sure we notice if/when we change
that :) */
BUG_ON(ic->class != RAWNODE_CLASS_INODE_CACHE);
for (p = &ic->nodes; (*p) != ref; p = &((*p)->next_in_ino)) for (p = &ic->nodes; (*p) != ref; p = &((*p)->next_in_ino))
; ;
*p = ref->next_in_ino; *p = ref->next_in_ino;
ref->next_in_ino = NULL; ref->next_in_ino = NULL;
if (ic->nodes == (void *)ic && ic->nlink == 0) switch (ic->class) {
jffs2_del_ino_cache(c, ic); #ifdef CONFIG_JFFS2_FS_XATTR
case RAWNODE_CLASS_XATTR_DATUM:
jffs2_release_xattr_datum(c, (struct jffs2_xattr_datum *)ic);
break;
case RAWNODE_CLASS_XATTR_REF:
jffs2_release_xattr_ref(c, (struct jffs2_xattr_ref *)ic);
break;
#endif
default:
if (ic->nodes == (void *)ic && ic->nlink == 0)
jffs2_del_ino_cache(c, ic);
break;
}
spin_unlock(&c->erase_completion_lock); spin_unlock(&c->erase_completion_lock);
} }

57
fs/jffs2/scan.c
View File

@ -317,20 +317,25 @@ static int jffs2_scan_xattr_node(struct jffs2_sb_info *c, struct jffs2_erasebloc
struct jffs2_summary *s) struct jffs2_summary *s)
{ {
struct jffs2_xattr_datum *xd; struct jffs2_xattr_datum *xd;
uint32_t totlen, crc; uint32_t xid, version, totlen, crc;
int err; int err;
crc = crc32(0, rx, sizeof(struct jffs2_raw_xattr) - 4); crc = crc32(0, rx, sizeof(struct jffs2_raw_xattr) - 4);
if (crc != je32_to_cpu(rx->node_crc)) { if (crc != je32_to_cpu(rx->node_crc)) {
if (je32_to_cpu(rx->node_crc) != 0xffffffff) JFFS2_WARNING("node CRC failed at %#08x, read=%#08x, calc=%#08x\n",
JFFS2_WARNING("node CRC failed at %#08x, read=%#08x, calc=%#08x\n", ofs, je32_to_cpu(rx->node_crc), crc);
ofs, je32_to_cpu(rx->node_crc), crc);
if ((err = jffs2_scan_dirty_space(c, jeb, je32_to_cpu(rx->totlen)))) if ((err = jffs2_scan_dirty_space(c, jeb, je32_to_cpu(rx->totlen))))
return err; return err;
return 0; return 0;
} }
totlen = PAD(sizeof(*rx) + rx->name_len + 1 + je16_to_cpu(rx->value_len)); xid = je32_to_cpu(rx->xid);
version = je32_to_cpu(rx->version);
totlen = sizeof(struct jffs2_raw_xattr);
if (version != XDATUM_DELETE_MARKER)
totlen += rx->name_len + 1 + je16_to_cpu(rx->value_len);
totlen = PAD(totlen);
if (totlen != je32_to_cpu(rx->totlen)) { if (totlen != je32_to_cpu(rx->totlen)) {
JFFS2_WARNING("node length mismatch at %#08x, read=%u, calc=%u\n", JFFS2_WARNING("node length mismatch at %#08x, read=%u, calc=%u\n",
ofs, je32_to_cpu(rx->totlen), totlen); ofs, je32_to_cpu(rx->totlen), totlen);
@ -339,22 +344,24 @@ static int jffs2_scan_xattr_node(struct jffs2_sb_info *c, struct jffs2_erasebloc
return 0; return 0;
} }
xd = jffs2_setup_xattr_datum(c, je32_to_cpu(rx->xid), je32_to_cpu(rx->version)); xd = jffs2_setup_xattr_datum(c, xid, version);
if (IS_ERR(xd)) { if (IS_ERR(xd))
if (PTR_ERR(xd) == -EEXIST) {
if ((err = jffs2_scan_dirty_space(c, jeb, PAD(je32_to_cpu(rx->totlen)))))
return err;
return 0;
}
return PTR_ERR(xd); return PTR_ERR(xd);
}
xd->xprefix = rx->xprefix;
xd->name_len = rx->name_len;
xd->value_len = je16_to_cpu(rx->value_len);
xd->data_crc = je32_to_cpu(rx->data_crc);
xd->node = jffs2_link_node_ref(c, jeb, ofs | REF_PRISTINE, totlen, NULL); if (xd->version > version) {
/* FIXME */ xd->node->next_in_ino = (void *)xd; struct jffs2_raw_node_ref *raw
= jffs2_link_node_ref(c, jeb, ofs | REF_PRISTINE, totlen, NULL);
raw->next_in_ino = xd->node->next_in_ino;
xd->node->next_in_ino = raw;
} else {
xd->version = version;
xd->xprefix = rx->xprefix;
xd->name_len = rx->name_len;
xd->value_len = je16_to_cpu(rx->value_len);
xd->data_crc = je32_to_cpu(rx->data_crc);
jffs2_link_node_ref(c, jeb, ofs | REF_PRISTINE, totlen, (void *)xd);
}
if (jffs2_sum_active()) if (jffs2_sum_active())
jffs2_sum_add_xattr_mem(s, rx, ofs - jeb->offset); jffs2_sum_add_xattr_mem(s, rx, ofs - jeb->offset);
@ -373,9 +380,8 @@ static int jffs2_scan_xref_node(struct jffs2_sb_info *c, struct jffs2_eraseblock
crc = crc32(0, rr, sizeof(*rr) - 4); crc = crc32(0, rr, sizeof(*rr) - 4);
if (crc != je32_to_cpu(rr->node_crc)) { if (crc != je32_to_cpu(rr->node_crc)) {
if (je32_to_cpu(rr->node_crc) != 0xffffffff) JFFS2_WARNING("node CRC failed at %#08x, read=%#08x, calc=%#08x\n",
JFFS2_WARNING("node CRC failed at %#08x, read=%#08x, calc=%#08x\n", ofs, je32_to_cpu(rr->node_crc), crc);
ofs, je32_to_cpu(rr->node_crc), crc);
if ((err = jffs2_scan_dirty_space(c, jeb, PAD(je32_to_cpu(rr->totlen))))) if ((err = jffs2_scan_dirty_space(c, jeb, PAD(je32_to_cpu(rr->totlen)))))
return err; return err;
return 0; return 0;
@ -395,6 +401,7 @@ static int jffs2_scan_xref_node(struct jffs2_sb_info *c, struct jffs2_eraseblock
return -ENOMEM; return -ENOMEM;
/* BEFORE jffs2_build_xattr_subsystem() called, /* BEFORE jffs2_build_xattr_subsystem() called,
* and AFTER xattr_ref is marked as a dead xref,
* ref->xid is used to store 32bit xid, xd is not used * ref->xid is used to store 32bit xid, xd is not used
* ref->ino is used to store 32bit inode-number, ic is not used * ref->ino is used to store 32bit inode-number, ic is not used
* Thoes variables are declared as union, thus using those * Thoes variables are declared as union, thus using those
@ -404,11 +411,13 @@ static int jffs2_scan_xref_node(struct jffs2_sb_info *c, struct jffs2_eraseblock
*/ */
ref->ino = je32_to_cpu(rr->ino); ref->ino = je32_to_cpu(rr->ino);
ref->xid = je32_to_cpu(rr->xid); ref->xid = je32_to_cpu(rr->xid);
ref->xseqno = je32_to_cpu(rr->xseqno);
if (ref->xseqno > c->highest_xseqno)
c->highest_xseqno = (ref->xseqno & ~XREF_DELETE_MARKER);
ref->next = c->xref_temp; ref->next = c->xref_temp;
c->xref_temp = ref; c->xref_temp = ref;
ref->node = jffs2_link_node_ref(c, jeb, ofs | REF_PRISTINE, PAD(je32_to_cpu(rr->totlen)), NULL); jffs2_link_node_ref(c, jeb, ofs | REF_PRISTINE, PAD(je32_to_cpu(rr->totlen)), (void *)ref);
/* FIXME */ ref->node->next_in_ino = (void *)ref;
if (jffs2_sum_active()) if (jffs2_sum_active())
jffs2_sum_add_xref_mem(s, rr, ofs - jeb->offset); jffs2_sum_add_xref_mem(s, rr, ofs - jeb->offset);

39
fs/jffs2/summary.c
View File

@ -310,8 +310,6 @@ int jffs2_sum_add_kvec(struct jffs2_sb_info *c, const struct kvec *invecs,
#ifdef CONFIG_JFFS2_FS_XATTR #ifdef CONFIG_JFFS2_FS_XATTR
case JFFS2_NODETYPE_XATTR: { case JFFS2_NODETYPE_XATTR: {
struct jffs2_sum_xattr_mem *temp; struct jffs2_sum_xattr_mem *temp;
if (je32_to_cpu(node->x.version) == 0xffffffff)
return 0;
temp = kmalloc(sizeof(struct jffs2_sum_xattr_mem), GFP_KERNEL); temp = kmalloc(sizeof(struct jffs2_sum_xattr_mem), GFP_KERNEL);
if (!temp) if (!temp)
goto no_mem; goto no_mem;
@ -327,10 +325,6 @@ int jffs2_sum_add_kvec(struct jffs2_sb_info *c, const struct kvec *invecs,
} }
case JFFS2_NODETYPE_XREF: { case JFFS2_NODETYPE_XREF: {
struct jffs2_sum_xref_mem *temp; struct jffs2_sum_xref_mem *temp;
if (je32_to_cpu(node->r.ino) == 0xffffffff
&& je32_to_cpu(node->r.xid) == 0xffffffff)
return 0;
temp = kmalloc(sizeof(struct jffs2_sum_xref_mem), GFP_KERNEL); temp = kmalloc(sizeof(struct jffs2_sum_xref_mem), GFP_KERNEL);
if (!temp) if (!temp)
goto no_mem; goto no_mem;
@ -483,22 +477,20 @@ static int jffs2_sum_process_sum_data(struct jffs2_sb_info *c, struct jffs2_eras
xd = jffs2_setup_xattr_datum(c, je32_to_cpu(spx->xid), xd = jffs2_setup_xattr_datum(c, je32_to_cpu(spx->xid),
je32_to_cpu(spx->version)); je32_to_cpu(spx->version));
if (IS_ERR(xd)) { if (IS_ERR(xd))
if (PTR_ERR(xd) == -EEXIST) {
/* a newer version of xd exists */
if ((err = jffs2_scan_dirty_space(c, jeb, je32_to_cpu(spx->totlen))))
return err;
sp += JFFS2_SUMMARY_XATTR_SIZE;
break;
}
JFFS2_NOTICE("allocation of xattr_datum failed\n");
return PTR_ERR(xd); return PTR_ERR(xd);
if (xd->version > je32_to_cpu(spx->version)) {
/* node is not the newest one */
struct jffs2_raw_node_ref *raw
= sum_link_node_ref(c, jeb, je32_to_cpu(spx->offset) | REF_UNCHECKED,
PAD(je32_to_cpu(spx->totlen)), NULL);
raw->next_in_ino = xd->node->next_in_ino;
xd->node->next_in_ino = raw;
} else {
xd->version = je32_to_cpu(spx->version);
sum_link_node_ref(c, jeb, je32_to_cpu(spx->offset) | REF_UNCHECKED,
PAD(je32_to_cpu(spx->totlen)), (void *)xd);
} }
xd->node = sum_link_node_ref(c, jeb, je32_to_cpu(spx->offset) | REF_UNCHECKED,
PAD(je32_to_cpu(spx->totlen)), NULL);
/* FIXME */ xd->node->next_in_ino = (void *)xd;
*pseudo_random += je32_to_cpu(spx->xid); *pseudo_random += je32_to_cpu(spx->xid);
sp += JFFS2_SUMMARY_XATTR_SIZE; sp += JFFS2_SUMMARY_XATTR_SIZE;
@ -519,14 +511,11 @@ static int jffs2_sum_process_sum_data(struct jffs2_sb_info *c, struct jffs2_eras
JFFS2_NOTICE("allocation of xattr_datum failed\n"); JFFS2_NOTICE("allocation of xattr_datum failed\n");
return -ENOMEM; return -ENOMEM;
} }
ref->ino = 0xfffffffe;
ref->xid = 0xfffffffd;
ref->next = c->xref_temp; ref->next = c->xref_temp;
c->xref_temp = ref; c->xref_temp = ref;
ref->node = sum_link_node_ref(c, jeb, je32_to_cpu(spr->offset) | REF_UNCHECKED, sum_link_node_ref(c, jeb, je32_to_cpu(spr->offset) | REF_UNCHECKED,
PAD(sizeof(struct jffs2_raw_xref)), NULL); PAD(sizeof(struct jffs2_raw_xref)), (void *)ref);
/* FIXME */ ref->node->next_in_ino = (void *)ref;
*pseudo_random += ref->node->flash_offset; *pseudo_random += ref->node->flash_offset;
sp += JFFS2_SUMMARY_XREF_SIZE; sp += JFFS2_SUMMARY_XREF_SIZE;

740
fs/jffs2/xattr.c
View File

File diff suppressed because it is too large Load Diff

40
fs/jffs2/xattr.h
View File

@ -16,6 +16,7 @@
#define JFFS2_XFLAGS_HOT (0x01) /* This datum is HOT */ #define JFFS2_XFLAGS_HOT (0x01) /* This datum is HOT */
#define JFFS2_XFLAGS_BIND (0x02) /* This datum is not reclaimed */ #define JFFS2_XFLAGS_BIND (0x02) /* This datum is not reclaimed */
#define JFFS2_XFLAGS_INVALID (0x80) /* This datum contains crc error */
struct jffs2_xattr_datum struct jffs2_xattr_datum
{ {
@ -23,7 +24,7 @@ struct jffs2_xattr_datum
struct jffs2_raw_node_ref *node; struct jffs2_raw_node_ref *node;
uint8_t class; uint8_t class;
uint8_t flags; uint8_t flags;
uint16_t xprefix; /* see JFFS2_XATTR_PREFIX_* */ uint16_t xprefix; /* see JFFS2_XATTR_PREFIX_* */
struct list_head xindex; /* chained from c->xattrindex[n] */ struct list_head xindex; /* chained from c->xattrindex[n] */
uint32_t refcnt; /* # of xattr_ref refers this */ uint32_t refcnt; /* # of xattr_ref refers this */
@ -47,6 +48,7 @@ struct jffs2_xattr_ref
uint8_t flags; /* Currently unused */ uint8_t flags; /* Currently unused */
u16 unused; u16 unused;
uint32_t xseqno;
union { union {
struct jffs2_inode_cache *ic; /* reference to jffs2_inode_cache */ struct jffs2_inode_cache *ic; /* reference to jffs2_inode_cache */
uint32_t ino; /* only used in scanning/building */ uint32_t ino; /* only used in scanning/building */
@ -58,6 +60,34 @@ struct jffs2_xattr_ref
struct jffs2_xattr_ref *next; /* chained from ic->xref_list */ struct jffs2_xattr_ref *next; /* chained from ic->xref_list */
}; };
#define XDATUM_DELETE_MARKER (0xffffffff)
#define XREF_DELETE_MARKER (0x00000001)
static inline int is_xattr_datum_dead(struct jffs2_xattr_datum *xd)
{
return (xd->version == XDATUM_DELETE_MARKER);
}
static inline void set_xattr_datum_dead(struct jffs2_xattr_datum *xd)
{
xd->version = XDATUM_DELETE_MARKER;
}
static inline int is_xattr_ref_dead(struct jffs2_xattr_ref *ref)
{
return ((ref->xseqno & XREF_DELETE_MARKER) != 0);
}
static inline void set_xattr_ref_dead(struct jffs2_xattr_ref *ref)
{
ref->xseqno |= XREF_DELETE_MARKER;
}
static inline void clr_xattr_ref_dead(struct jffs2_xattr_ref *ref)
{
ref->xseqno &= ~XREF_DELETE_MARKER;
}
#ifdef CONFIG_JFFS2_FS_XATTR #ifdef CONFIG_JFFS2_FS_XATTR
extern void jffs2_init_xattr_subsystem(struct jffs2_sb_info *c); extern void jffs2_init_xattr_subsystem(struct jffs2_sb_info *c);
@ -70,9 +100,13 @@ extern struct jffs2_xattr_datum *jffs2_setup_xattr_datum(struct jffs2_sb_info *c
extern void jffs2_xattr_delete_inode(struct jffs2_sb_info *c, struct jffs2_inode_cache *ic); 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 void jffs2_xattr_free_inode(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_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); struct jffs2_raw_node_ref *raw);
extern int jffs2_garbage_collect_xattr_ref(struct jffs2_sb_info *c, struct jffs2_xattr_ref *ref,
struct jffs2_raw_node_ref *raw);
extern int jffs2_verify_xattr(struct jffs2_sb_info *c); extern int jffs2_verify_xattr(struct jffs2_sb_info *c);
extern void jffs2_release_xattr_datum(struct jffs2_sb_info *c, struct jffs2_xattr_datum *xd);
extern void jffs2_release_xattr_ref(struct jffs2_sb_info *c, struct jffs2_xattr_ref *ref);
extern int do_jffs2_getxattr(struct inode *inode, int xprefix, const char *xname, extern int do_jffs2_getxattr(struct inode *inode, int xprefix, const char *xname,
char *buffer, size_t size); char *buffer, size_t size);

1
include/linux/jffs2.h
View File

@ -186,6 +186,7 @@ struct jffs2_raw_xref
jint32_t hdr_crc; jint32_t hdr_crc;
jint32_t ino; /* inode number */ jint32_t ino; /* inode number */
jint32_t xid; /* XATTR identifier number */ jint32_t xid; /* XATTR identifier number */
jint32_t xseqno; /* xref sequencial number */
jint32_t node_crc; jint32_t node_crc;
} __attribute__((packed)); } __attribute__((packed));