#define EXT4_MMP_MAX_CHECK_INTERVAL 300UL
/*
-+ * Maximum size of xattr attributes for FEATURE_INCOMPAT_EA_INODE 1Mb
++ * Maximum size of xattr attributes for FEATURE_INCOMPAT_EA_INODE 1MB
+ * This limit is arbitrary, but is reasonable for the xattr API.
+ */
+#define EXT4_XATTR_MAX_LARGE_EA_SIZE (1024 * 1024)
if (IS_ERR(handle)) {
ext4_std_error(inode->i_sb, PTR_ERR(handle));
/*
-@@ -248,9 +248,36 @@ void ext4_evict_inode(struct inode *inod
- sb_end_intwrite(inode->i_sb);
- goto no_delete;
- }
--
+@@ -251,6 +251,32 @@ void ext4_evict_inode(struct inode *inod
+
if (IS_SYNC(inode))
ext4_handle_sync(handle);
+
-+ /*
-+ * Delete xattr inode before deleting the main inode.
-+ */
++ /* Delete xattr inode before deleting the main inode. */
+ err = ext4_xattr_delete_inode(handle, inode, &lea_ino_array);
+ if (err) {
+ ext4_warning(inode->i_sb,
inode->i_size = 0;
err = ext4_mark_inode_dirty(handle, inode);
if (err) {
-@@ -305,8 +332,12 @@ void ext4_evict_inode(struct inode *inod
- ext4_clear_inode(inode);
- else
+@@ -269,10 +296,10 @@ void ext4_evict_inode(struct inode *inod
+ * enough credits left in the handle to remove the inode from
+ * the orphan list and set the dtime field.
+ */
+- if (!ext4_handle_has_enough_credits(handle, 3)) {
+- err = ext4_journal_extend(handle, 3);
++ if (!ext4_handle_has_enough_credits(handle, extra_credits)) {
++ err = ext4_journal_extend(handle, extra_credits);
+ if (err > 0)
+- err = ext4_journal_restart(handle, 3);
++ err = ext4_journal_restart(handle, extra_credits);
+ if (err != 0) {
+ ext4_warning(inode->i_sb,
+ "couldn't extend journal (err %d)", err);
+@@ -307,6 +334,9 @@ void ext4_evict_inode(struct inode *inod
ext4_free_inode(handle, inode);
-+
ext4_journal_stop(handle);
sb_end_intwrite(inode->i_sb);
+
return;
no_delete:
ext4_clear_inode(inode); /* We must guarantee clearing of inode... */
-@@ -4777,7 +4808,7 @@ static int ext4_index_trans_blocks(struc
+@@ -4777,7 +4807,7 @@ static int ext4_index_trans_blocks(struc
*
* Also account for superblock, inode, quota and xattr blocks
*/
===================================================================
--- linux-stage.orig/fs/ext4/xattr.c
+++ linux-stage/fs/ext4/xattr.c
+@@ -201,6 +201,7 @@ ext4_xattr_check_names(struct ext4_xattr
+
+ while (!IS_LAST_ENTRY(entry)) {
+ if (entry->e_value_size != 0 &&
++ entry->e_value_inum == 0 &&
+ (value_start + le16_to_cpu(entry->e_value_offs) <
+ (void *)e + sizeof(__u32) ||
+ value_start + le16_to_cpu(entry->e_value_offs) +
@@ -233,19 +233,26 @@ ext4_xattr_check_block(struct inode *ino
}
size_t value_size = le32_to_cpu(entry->e_value_size);
- if (entry->e_value_block != 0 || value_size > size ||
-- le16_to_cpu(entry->e_value_offs) + value_size > size)
-+ if ((entry->e_value_inum == 0) &&
-+ (le16_to_cpu(entry->e_value_offs) + value_size > size))
++ if (!entry->e_value_inum &&
+ le16_to_cpu(entry->e_value_offs) + value_size > size)
+ return -EIO;
-+ if (entry->e_value_inum != 0 &&
++ if (entry->e_value_inum &&
+ (le32_to_cpu(entry->e_value_inum) < EXT4_FIRST_INO(inode->i_sb) ||
+ le32_to_cpu(entry->e_value_inum) >
+ le32_to_cpu(EXT4_SB(inode->i_sb)->s_es->s_inodes_count)))
{
struct ext4_xattr_entry *entry;
size_t name_len;
-@@ -265,11 +272,103 @@ ext4_xattr_find_entry(struct ext4_xattr_
+@@ -265,11 +272,109 @@ ext4_xattr_find_entry(struct ext4_xattr_
break;
}
*pentry = entry;
+/*
+ * Read the EA value from an inode.
+ */
-+static int
-+ext4_xattr_inode_read(struct inode *ea_inode, void *buf, size_t *size)
++static int ext4_xattr_inode_read(struct inode *ea_inode, void *buf, size_t *size)
+{
+ unsigned long block = 0;
+ struct buffer_head *bh = NULL;
+ return err;
+}
+
-+struct inode *ext4_xattr_inode_iget(struct inode *parent, int ea_ino, int *err)
++/*
++ * Fetch the xattr inode from disk.
++ *
++ * The xattr inode stores the parent inode number and generation so that
++ * the kernel and e2fsck can verify the xattr inode is valid upon access.
++ */
++struct inode *ext4_xattr_inode_iget(struct inode *parent,
++ unsigned long ea_ino, int *err)
+{
+ struct inode *ea_inode = NULL;
+
+ ea_inode = ext4_iget(parent->i_sb, ea_ino);
+ if (IS_ERR(ea_inode) || is_bad_inode(ea_inode)) {
-+ ext4_error(parent->i_sb, "error while reading EA inode %d",
-+ ea_ino);
-+ *err = -EIO;
++ int rc = IS_ERR(ea_inode) ? PTR_ERR(ea_inode) : 0;
++ ext4_error(parent->i_sb, "error while reading EA inode %lu "
++ "/ %d %d", ea_ino, rc, is_bad_inode(ea_inode));
++ *err = rc != 0 ? rc : -EIO;
+ return NULL;
+ }
+
-+ if (ea_inode->i_xattr_inode_parent != parent->i_ino ||
++ if (EXT4_XATTR_INODE_GET_PARENT(ea_inode) != parent->i_ino ||
+ ea_inode->i_generation != parent->i_generation) {
-+ ext4_error(parent->i_sb, "Backpointer from EA inode %d "
++ ext4_error(parent->i_sb, "Backpointer from EA inode %lu "
+ "to parent invalid.", ea_ino);
+ *err = -EINVAL;
+ goto error;
+ }
+
+ if (!(EXT4_I(ea_inode)->i_flags & EXT4_EA_INODE_FL)) {
-+ ext4_error(parent->i_sb, "EA inode %d does not have "
++ ext4_error(parent->i_sb, "EA inode %lu does not have "
+ "EXT4_EA_INODE_FL flag set.\n", ea_ino);
+ *err = -EINVAL;
+ goto error;
+/*
+ * Read the value from the EA inode.
+ */
-+static int
-+ext4_xattr_inode_get(struct inode *inode, int ea_ino, void *buffer,
-+ size_t *size)
++static int ext4_xattr_inode_get(struct inode *inode, unsigned long ea_ino,
++ void *buffer, size_t *size)
+{
+ struct inode *ea_inode = NULL;
+ int err;
goto cleanup;
- memcpy(buffer, bh->b_data + le16_to_cpu(entry->e_value_offs),
- size);
-+ if (entry->e_value_inum != 0) {
++ if (entry->e_value_inum) {
+ error = ext4_xattr_inode_get(inode,
+ le32_to_cpu(entry->e_value_inum),
+ buffer, &size);
goto cleanup;
- memcpy(buffer, (void *)IFIRST(header) +
- le16_to_cpu(entry->e_value_offs), size);
-+ if (entry->e_value_inum != 0) {
++ if (entry->e_value_inum) {
+ error = ext4_xattr_inode_get(inode,
+ le32_to_cpu(entry->e_value_inum),
+ buffer, &size);
for (; !IS_LAST_ENTRY(last); last = EXT4_XATTR_NEXT(last)) {
*total += EXT4_XATTR_LEN(last->e_name_len);
- if (!last->e_value_block && last->e_value_size) {
-+ if (last->e_value_inum == 0 && last->e_value_size > 0) {
++ if (!last->e_value_inum && last->e_value_size) {
size_t offs = le16_to_cpu(last->e_value_offs);
if (offs < *min_offs)
*min_offs = offs;
+ * A back-pointer from EA inode to parent inode will be useful
+ * for e2fsck.
+ */
-+ ea_inode->i_xattr_inode_parent = inode->i_ino;
++ EXT4_XATTR_INODE_SET_PARENT(ea_inode, inode->i_ino);
+ unlock_new_inode(ea_inode);
+ }
+
+ * Unlink the inode storing the value of the EA.
+ */
+int
-+ext4_xattr_inode_unlink(struct inode *inode, int ea_ino)
++ext4_xattr_inode_unlink(struct inode *inode, unsigned long ea_ino)
+{
+ struct inode *ea_inode = NULL;
+ int err;
+ * Add value of the EA in an inode.
+ */
+static int
-+ext4_xattr_inode_set(handle_t *handle, struct inode *inode, int *ea_ino,
++ext4_xattr_inode_set(handle_t *handle, struct inode *inode, unsigned long *ea_ino,
+ const void *value, size_t value_len)
+{
+ struct inode *ea_inode = NULL;
last = s->first;
for (; !IS_LAST_ENTRY(last); last = EXT4_XATTR_NEXT(last)) {
- if (!last->e_value_block && last->e_value_size) {
-+ if (last->e_value_inum == 0 && last->e_value_size > 0) {
++ if (!last->e_value_inum && last->e_value_size) {
size_t offs = le16_to_cpu(last->e_value_offs);
if (offs < min_offs)
min_offs = offs;
free = min_offs - ((void *)last - s->base) - sizeof(__u32);
if (!s->not_found) {
- if (!s->here->e_value_block && s->here->e_value_size) {
-+ if (!in_inode && s->here->e_value_inum == 0 &&
-+ s->here->e_value_size > 0) {
++ if (!in_inode &&
++ !s->here->e_value_inum && s->here->e_value_size) {
size_t size = le32_to_cpu(s->here->e_value_size);
free += EXT4_XATTR_SIZE(size);
}
memcpy(s->here->e_name, i->name, name_len);
} else {
- if (!s->here->e_value_block && s->here->e_value_size) {
-+ if (s->here->e_value_offs > 0 && s->here->e_value_inum == 0 &&
-+ s->here->e_value_size > 0) {
++ if (!s->here->e_value_inum && s->here->e_value_size &&
++ s->here->e_value_offs > 0) {
void *first_val = s->base + min_offs;
size_t offs = le16_to_cpu(s->here->e_value_offs);
void *val = s->base + offs;
last = EXT4_XATTR_NEXT(last);
}
}
-+ if (s->here->e_value_inum != 0) {
++ if (s->here->e_value_inum) {
+ ext4_xattr_inode_unlink(inode,
+ le32_to_cpu(s->here->e_value_inum));
+ s->here->e_value_inum = 0;
s->here->e_value_size = cpu_to_le32(i->value_len);
- if (i->value_len) {
+ if (in_inode) {
-+ int ea_ino = le32_to_cpu(s->here->e_value_inum);
++ unsigned long ea_ino = le32_to_cpu(s->here->e_value_inum);
+ ext4_xattr_inode_set(handle, inode, &ea_ino, i->value,
+ i->value_len);
+ s->here->e_value_inum = cpu_to_le32(ea_ino);
bs->s.here = bs->s.first;
error = ext4_xattr_find_entry(&bs->s.here, i->name_index,
- i->name, bs->bh->b_size, 1);
-+ i->name, bs->bh->b_size, 1, inode);
++ i->name, bs->bh->b_size, 1, inode);
if (error && error != -ENODATA)
goto cleanup;
bs->s.not_found = error;
/* Adjust the value offsets of the entries */
for (; !IS_LAST_ENTRY(last); last = EXT4_XATTR_NEXT(last)) {
- if (!last->e_value_block && last->e_value_size) {
-+ if (last->e_value_inum == 0 && last->e_value_size > 0) {
++ if (!last->e_value_inum && last->e_value_size) {
new_offs = le16_to_cpu(last->e_value_offs) +
value_offs_shift;
BUG_ON(new_offs + le32_to_cpu(last->e_value_size)
goto cleanup;
+ raw_inode = ext4_raw_inode(&iloc);
+ header = IHDR(inode, raw_inode);
-+ entry = IFIRST(header);
-+ for (; !IS_LAST_ENTRY(entry); entry = EXT4_XATTR_NEXT(entry)) {
-+ if (entry->e_value_inum == 0)
++ for (entry = IFIRST(header); !IS_LAST_ENTRY(entry);
++ entry = EXT4_XATTR_NEXT(entry)) {
++ if (!entry->e_value_inum)
+ continue;
+ if (ext4_expand_ino_array(lea_ino_array,
+ entry->e_value_inum) != 0) {
goto cleanup;
}
+
-+ entry = BFIRST(bh);
-+ for (; !IS_LAST_ENTRY(entry); entry = EXT4_XATTR_NEXT(entry)) {
-+ if (entry->e_value_inum == 0)
++ for (entry = BFIRST(bh); !IS_LAST_ENTRY(entry);
++ entry = EXT4_XATTR_NEXT(entry)) {
++ if (!entry->e_value_inum)
+ continue;
+ if (ext4_expand_ino_array(lea_ino_array,
+ entry->e_value_inum) != 0)
}
- if (entry->e_value_block == 0 && entry->e_value_size != 0) {
-+ if (entry->e_value_inum == 0 && entry->e_value_size != 0) {
++ if (!entry->e_value_inum && entry->e_value_size) {
__le32 *value = (__le32 *)((char *)header +
le16_to_cpu(entry->e_value_offs));
for (n = (le32_to_cpu(entry->e_value_size) +
__le32 e_value_size; /* size of attribute value */
__le32 e_hash; /* hash value of name and value */
char e_name[0]; /* attribute name */
-@@ -67,6 +67,15 @@ struct ext4_xattr_entry {
+@@ -67,6 +67,26 @@ struct ext4_xattr_entry {
EXT4_I(inode)->i_extra_isize))
#define IFIRST(hdr) ((struct ext4_xattr_entry *)((hdr)+1))
-+#define i_xattr_inode_parent i_mtime.tv_sec
++/*
++ * Link EA inode back to parent one using i_mtime field.
++ * Extra integer type conversion added to ignore higher
++ * bits in i_mtime.tv_sec which might be set by ext4_get()
++ */
++#define EXT4_XATTR_INODE_SET_PARENT(inode, inum) \
++do { \
++ (inode)->i_mtime.tv_sec = inum; \
++} while(0)
++
++#define EXT4_XATTR_INODE_GET_PARENT(inode) \
++ ((__u32)(inode)->i_mtime.tv_sec)
+
+/*
+ * The minimum size of EA value when you start storing it in an external inode
extern int ext4_xattr_set_handle(handle_t *, struct inode *, int, const char *, const void *, size_t, int);
-extern void ext4_xattr_delete_inode(handle_t *, struct inode *);
-+extern struct inode *ext4_xattr_inode_iget(struct inode *parent, int ea_ino,
++extern struct inode *ext4_xattr_inode_iget(struct inode *parent, unsigned long ea_ino,
+ int *err);
-+extern int ext4_xattr_inode_unlink(struct inode *inode, int ea_ino);
++extern int ext4_xattr_inode_unlink(struct inode *inode, unsigned long ea_ino);
+extern int ext4_xattr_delete_inode(handle_t *handle, struct inode *inode,
+ struct ext4_xattr_ino_array **array);
+extern void ext4_xattr_inode_array_free(struct inode *inode,
git://git.whamcloud.com / fs / lustre-release.git / blobdiff