Merge with /pub/scm/linux/kernel/git/torvalds/linux-2.6.git

1 files changed, 67 insertions, 64 deletions

diff --git a/fs/jffs2/gc.c b/fs/jffs2/gc.c
index f9ffece453a3..477c526d638b 100644
--- a/fs/jffs2/gc.c
+++ b/fs/jffs2/gc.c
@@ -125,6 +125,7 @@ int jffs2_garbage_collect_pass(struct jffs2_sb_info *c)
         struct jffs2_eraseblock *jeb;
         struct jffs2_raw_node_ref *raw;
         int ret = 0, inum, nlink;
+        int xattr = 0;
 
         if (down_interruptible(&c->alloc_sem))
                 return -EINTR;
@@ -138,7 +139,7 @@ int jffs2_garbage_collect_pass(struct jffs2_sb_info *c)
                    the node CRCs etc. Do it now. */
 
                 /* checked_ino is protected by the alloc_sem */
-                if (c->checked_ino > c->highest_ino) {
+                if (c->checked_ino > c->highest_ino && xattr) {
                         printk(KERN_CRIT "Checked all inodes but still 0x%x bytes of unchecked space?\n",
                                c->unchecked_size);
                         jffs2_dbg_dump_block_lists_nolock(c);
@@ -148,6 +149,9 @@ int jffs2_garbage_collect_pass(struct jffs2_sb_info *c)
 
                 spin_unlock(&c->erase_completion_lock);
 
+                if (!xattr)
+                        xattr = jffs2_verify_xattr(c);
+
                 spin_lock(&c->inocache_lock);
 
                 ic = jffs2_get_ino_cache(c, c->checked_ino++);
@@ -181,6 +185,10 @@ int jffs2_garbage_collect_pass(struct jffs2_sb_info *c)
                            and trigger the BUG() above while we haven't yet
                            finished checking all its nodes */
                         D1(printk(KERN_DEBUG "Waiting for ino #%u to finish reading\n", ic->ino));
+                        /* We need to come back again for the _same_ inode. We've
+                         made no progress in this case, but that should be OK */
+                        c->checked_ino--;
+
                         up(&c->alloc_sem);
                         sleep_on_spinunlock(&c->inocache_wq, &c->inocache_lock);
                         return 0;
@@ -231,7 +239,7 @@ int jffs2_garbage_collect_pass(struct jffs2_sb_info *c)
 
         while(ref_obsolete(raw)) {
                 D1(printk(KERN_DEBUG "Node at 0x%08x is obsolete... skipping\n", ref_offset(raw)));
-                raw = raw->next_phys;
+                raw = ref_next(raw);
                 if (unlikely(!raw)) {
                         printk(KERN_WARNING "eep. End of raw list while still supposedly nodes to GC\n");
                         printk(KERN_WARNING "erase block at 0x%08x. free_size 0x%08x, dirty_size 0x%08x, used_size 0x%08x\n",
@@ -248,16 +256,37 @@ int jffs2_garbage_collect_pass(struct jffs2_sb_info *c)
 
         if (!raw->next_in_ino) {
                 /* Inode-less node. Clean marker, snapshot or something like that */
-                /* FIXME: If it's something that needs to be copied, including something
-                   we don't grok that has JFFS2_NODETYPE_RWCOMPAT_COPY, we should do so */
                 spin_unlock(&c->erase_completion_lock);
-                jffs2_mark_node_obsolete(c, raw);
+                if (ref_flags(raw) == REF_PRISTINE) {
+                        /* It's an unknown node with JFFS2_FEATURE_RWCOMPAT_COPY */
+                        jffs2_garbage_collect_pristine(c, NULL, raw);
+                } else {
+                        /* Just mark it obsolete */
+                        jffs2_mark_node_obsolete(c, raw);
+                }
                 up(&c->alloc_sem);
                 goto eraseit_lock;
         }
 
         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.     */
+        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
            causes less contention. */
@@ -499,7 +528,6 @@ static int jffs2_garbage_collect_pristine(struct jffs2_sb_info *c,
                                           struct jffs2_raw_node_ref *raw)
 {
         union jffs2_node_union *node;
-        struct jffs2_raw_node_ref *nraw;
         size_t retlen;
         int ret;
         uint32_t phys_ofs, alloclen;
@@ -508,15 +536,16 @@ static int jffs2_garbage_collect_pristine(struct jffs2_sb_info *c,
 
         D1(printk(KERN_DEBUG "Going to GC REF_PRISTINE node at 0x%08x\n", ref_offset(raw)));
 
-        rawlen = ref_totlen(c, c->gcblock, raw);
+        alloclen = rawlen = ref_totlen(c, c->gcblock, raw);
 
         /* Ask for a small amount of space (or the totlen if smaller) because we
            don't want to force wastage of the end of a block if splitting would
            work. */
-        ret = jffs2_reserve_space_gc(c, min_t(uint32_t, sizeof(struct jffs2_raw_inode) +
-                                JFFS2_MIN_DATA_LEN, rawlen), &phys_ofs, &alloclen, rawlen);
-                                /* this is not the exact summary size of it,
-                                        it is only an upper estimation */
+        if (ic && alloclen > sizeof(struct jffs2_raw_inode) + JFFS2_MIN_DATA_LEN)
+                alloclen = sizeof(struct jffs2_raw_inode) + JFFS2_MIN_DATA_LEN;
+
+        ret = jffs2_reserve_space_gc(c, alloclen, &alloclen, rawlen);
+        /* 'rawlen' is not the exact summary size; it is only an upper estimation */
 
         if (ret)
                 return ret;
@@ -580,22 +609,17 @@ static int jffs2_garbage_collect_pristine(struct jffs2_sb_info *c,
                 }
                 break;
         default:
-                printk(KERN_WARNING "Unknown node type for REF_PRISTINE node at 0x%08x: 0x%04x\n",
-                       ref_offset(raw), je16_to_cpu(node->u.nodetype));
-                goto bail;
-        }
-
-        nraw = jffs2_alloc_raw_node_ref();
-        if (!nraw) {
-                ret = -ENOMEM;
-                goto out_node;
+                /* If it's inode-less, we don't _know_ what it is. Just copy it intact */
+                if (ic) {
+                        printk(KERN_WARNING "Unknown node type for REF_PRISTINE node at 0x%08x: 0x%04x\n",
+                               ref_offset(raw), je16_to_cpu(node->u.nodetype));
+                        goto bail;
+                }
         }
 
         /* OK, all the CRCs are good; this node can just be copied as-is. */
  retry:
-        nraw->flash_offset = phys_ofs;
-        nraw->__totlen = rawlen;
-        nraw->next_phys = NULL;
+        phys_ofs = write_ofs(c);
 
         ret = jffs2_flash_write(c, phys_ofs, rawlen, &retlen, (char *)node);
 
@@ -603,17 +627,11 @@ static int jffs2_garbage_collect_pristine(struct jffs2_sb_info *c,
                 printk(KERN_NOTICE "Write of %d bytes at 0x%08x failed. returned %d, retlen %zd\n",
                        rawlen, phys_ofs, ret, retlen);
                 if (retlen) {
-                        /* Doesn't belong to any inode */
-                        nraw->next_in_ino = NULL;
-
-                        nraw->flash_offset |= REF_OBSOLETE;
-                        jffs2_add_physical_node_ref(c, nraw);
-                        jffs2_mark_node_obsolete(c, nraw);
+                        jffs2_add_physical_node_ref(c, phys_ofs | REF_OBSOLETE, rawlen, NULL);
                 } else {
-                        printk(KERN_NOTICE "Not marking the space at 0x%08x as dirty because the flash driver returned retlen zero\n", nraw->flash_offset);
-                        jffs2_free_raw_node_ref(nraw);
+                        printk(KERN_NOTICE "Not marking the space at 0x%08x as dirty because the flash driver returned retlen zero\n", phys_ofs);
                 }
-                if (!retried && (nraw = jffs2_alloc_raw_node_ref())) {
+                if (!retried) {
                         /* Try to reallocate space and retry */
                         uint32_t dummy;
                         struct jffs2_eraseblock *jeb = &c->blocks[phys_ofs / c->sector_size];
@@ -625,7 +643,7 @@ static int jffs2_garbage_collect_pristine(struct jffs2_sb_info *c,
                         jffs2_dbg_acct_sanity_check(c,jeb);
                         jffs2_dbg_acct_paranoia_check(c, jeb);
 
-                        ret = jffs2_reserve_space_gc(c, rawlen, &phys_ofs, &dummy, rawlen);
+                        ret = jffs2_reserve_space_gc(c, rawlen, &dummy, rawlen);
                                                 /* this is not the exact summary size of it,
                                                         it is only an upper estimation */
 
@@ -638,25 +656,13 @@ static int jffs2_garbage_collect_pristine(struct jffs2_sb_info *c,
                                 goto retry;
                         }
                         D1(printk(KERN_DEBUG "Failed to allocate space to retry failed write: %d!\n", ret));
-                        jffs2_free_raw_node_ref(nraw);
                 }
 
-                jffs2_free_raw_node_ref(nraw);
                 if (!ret)
                         ret = -EIO;
                 goto out_node;
         }
-        nraw->flash_offset |= REF_PRISTINE;
-        jffs2_add_physical_node_ref(c, nraw);
-
-        /* Link into per-inode list. This is safe because of the ic
-           state being INO_STATE_GC. Note that if we're doing this
-           for an inode which is in-core, the 'nraw' pointer is then
-           going to be fetched from ic->nodes by our caller. */
-        spin_lock(&c->erase_completion_lock);
-        nraw->next_in_ino = ic->nodes;
-        ic->nodes = nraw;
-        spin_unlock(&c->erase_completion_lock);
+        jffs2_add_physical_node_ref(c, phys_ofs | REF_PRISTINE, rawlen, ic);
 
         jffs2_mark_node_obsolete(c, raw);
         D1(printk(KERN_DEBUG "WHEEE! GC REF_PRISTINE node at 0x%08x succeeded\n", ref_offset(raw)));
@@ -675,19 +681,16 @@ static int jffs2_garbage_collect_metadata(struct jffs2_sb_info *c, struct jffs2_
         struct jffs2_full_dnode *new_fn;
         struct jffs2_raw_inode ri;
         struct jffs2_node_frag *last_frag;
-        jint16_t dev;
+        union jffs2_device_node dev;
         char *mdata = NULL, mdatalen = 0;
-        uint32_t alloclen, phys_ofs, ilen;
+        uint32_t alloclen, ilen;
         int ret;
 
         if (S_ISBLK(JFFS2_F_I_MODE(f)) ||
             S_ISCHR(JFFS2_F_I_MODE(f)) ) {
                 /* For these, we don't actually need to read the old node */
-                /* FIXME: for minor or major > 255. */
-                dev = cpu_to_je16(((JFFS2_F_I_RDEV_MAJ(f) << 8) |
-                        JFFS2_F_I_RDEV_MIN(f)));
+                mdatalen = jffs2_encode_dev(&dev, JFFS2_F_I_RDEV(f));
                 mdata = (char *)&dev;
-                mdatalen = sizeof(dev);
                 D1(printk(KERN_DEBUG "jffs2_garbage_collect_metadata(): Writing %d bytes of kdev_t\n", mdatalen));
         } else if (S_ISLNK(JFFS2_F_I_MODE(f))) {
                 mdatalen = fn->size;
@@ -706,7 +709,7 @@ static int jffs2_garbage_collect_metadata(struct jffs2_sb_info *c, struct jffs2_
 
         }
 
-        ret = jffs2_reserve_space_gc(c, sizeof(ri) + mdatalen, &phys_ofs, &alloclen,
+        ret = jffs2_reserve_space_gc(c, sizeof(ri) + mdatalen, &alloclen,
                                 JFFS2_SUMMARY_INODE_SIZE);
         if (ret) {
                 printk(KERN_WARNING "jffs2_reserve_space_gc of %zd bytes for garbage_collect_metadata failed: %d\n",
@@ -744,7 +747,7 @@ static int jffs2_garbage_collect_metadata(struct jffs2_sb_info *c, struct jffs2_
         ri.node_crc = cpu_to_je32(crc32(0, &ri, sizeof(ri)-8));
         ri.data_crc = cpu_to_je32(crc32(0, mdata, mdatalen));
 
-        new_fn = jffs2_write_dnode(c, f, &ri, mdata, mdatalen, phys_ofs, ALLOC_GC);
+        new_fn = jffs2_write_dnode(c, f, &ri, mdata, mdatalen, ALLOC_GC);
 
         if (IS_ERR(new_fn)) {
                 printk(KERN_WARNING "Error writing new dnode: %ld\n", PTR_ERR(new_fn));
@@ -765,7 +768,7 @@ static int jffs2_garbage_collect_dirent(struct jffs2_sb_info *c, struct jffs2_er
 {
         struct jffs2_full_dirent *new_fd;
         struct jffs2_raw_dirent rd;
-        uint32_t alloclen, phys_ofs;
+        uint32_t alloclen;
         int ret;
 
         rd.magic = cpu_to_je16(JFFS2_MAGIC_BITMASK);
@@ -787,14 +790,14 @@ static int jffs2_garbage_collect_dirent(struct jffs2_sb_info *c, struct jffs2_er
         rd.node_crc = cpu_to_je32(crc32(0, &rd, sizeof(rd)-8));
         rd.name_crc = cpu_to_je32(crc32(0, fd->name, rd.nsize));
 
-        ret = jffs2_reserve_space_gc(c, sizeof(rd)+rd.nsize, &phys_ofs, &alloclen,
+        ret = jffs2_reserve_space_gc(c, sizeof(rd)+rd.nsize, &alloclen,
                                 JFFS2_SUMMARY_DIRENT_SIZE(rd.nsize));
         if (ret) {
                 printk(KERN_WARNING "jffs2_reserve_space_gc of %zd bytes for garbage_collect_dirent failed: %d\n",
                        sizeof(rd)+rd.nsize, ret);
                 return ret;
         }
-        new_fd = jffs2_write_dirent(c, f, &rd, fd->name, rd.nsize, phys_ofs, ALLOC_GC);
+        new_fd = jffs2_write_dirent(c, f, &rd, fd->name, rd.nsize, ALLOC_GC);
 
         if (IS_ERR(new_fd)) {
                 printk(KERN_WARNING "jffs2_write_dirent in garbage_collect_dirent failed: %ld\n", PTR_ERR(new_fd));
@@ -922,7 +925,7 @@ static int jffs2_garbage_collect_hole(struct jffs2_sb_info *c, struct jffs2_eras
         struct jffs2_raw_inode ri;
         struct jffs2_node_frag *frag;
         struct jffs2_full_dnode *new_fn;
-        uint32_t alloclen, phys_ofs, ilen;
+        uint32_t alloclen, ilen;
         int ret;
 
         D1(printk(KERN_DEBUG "Writing replacement hole node for ino #%u from offset 0x%x to 0x%x\n",
@@ -1001,14 +1004,14 @@ static int jffs2_garbage_collect_hole(struct jffs2_sb_info *c, struct jffs2_eras
         ri.data_crc = cpu_to_je32(0);
         ri.node_crc = cpu_to_je32(crc32(0, &ri, sizeof(ri)-8));
 
-        ret = jffs2_reserve_space_gc(c, sizeof(ri), &phys_ofs, &alloclen,
-                                JFFS2_SUMMARY_INODE_SIZE);
+        ret = jffs2_reserve_space_gc(c, sizeof(ri), &alloclen,
+                                     JFFS2_SUMMARY_INODE_SIZE);
         if (ret) {
                 printk(KERN_WARNING "jffs2_reserve_space_gc of %zd bytes for garbage_collect_hole failed: %d\n",
                        sizeof(ri), ret);
                 return ret;
         }
-        new_fn = jffs2_write_dnode(c, f, &ri, NULL, 0, phys_ofs, ALLOC_GC);
+        new_fn = jffs2_write_dnode(c, f, &ri, NULL, 0, ALLOC_GC);
 
         if (IS_ERR(new_fn)) {
                 printk(KERN_WARNING "Error writing new hole node: %ld\n", PTR_ERR(new_fn));
@@ -1070,7 +1073,7 @@ static int jffs2_garbage_collect_dnode(struct jffs2_sb_info *c, struct jffs2_era
 {
         struct jffs2_full_dnode *new_fn;
         struct jffs2_raw_inode ri;
-        uint32_t alloclen, phys_ofs, offset, orig_end, orig_start;
+        uint32_t alloclen, offset, orig_end, orig_start;
         int ret = 0;
         unsigned char *comprbuf = NULL, *writebuf;
         unsigned long pg;
@@ -1227,7 +1230,7 @@ static int jffs2_garbage_collect_dnode(struct jffs2_sb_info *c, struct jffs2_era
                 uint32_t cdatalen;
                 uint16_t comprtype = JFFS2_COMPR_NONE;
 
-                ret = jffs2_reserve_space_gc(c, sizeof(ri) + JFFS2_MIN_DATA_LEN, &phys_ofs,
+                ret = jffs2_reserve_space_gc(c, sizeof(ri) + JFFS2_MIN_DATA_LEN,
                                         &alloclen, JFFS2_SUMMARY_INODE_SIZE);
 
                 if (ret) {
@@ -1264,7 +1267,7 @@ static int jffs2_garbage_collect_dnode(struct jffs2_sb_info *c, struct jffs2_era
                 ri.node_crc = cpu_to_je32(crc32(0, &ri, sizeof(ri)-8));
                 ri.data_crc = cpu_to_je32(crc32(0, comprbuf, cdatalen));
 
-                new_fn = jffs2_write_dnode(c, f, &ri, comprbuf, cdatalen, phys_ofs, ALLOC_GC);
+                new_fn = jffs2_write_dnode(c, f, &ri, comprbuf, cdatalen, ALLOC_GC);
 
                 jffs2_free_comprbuf(comprbuf, writebuf);