diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h
index 1a462ab85c49888a3962b026a74ede8c47182fc1..da308774b8a4538c4bbea595a11b49a2a8c5ca5e 100644
--- a/fs/btrfs/ctree.h
+++ b/fs/btrfs/ctree.h
@@ -2974,7 +2974,7 @@ static inline void free_fs_info(struct btrfs_fs_info *fs_info)
kfree(fs_info->super_copy);
kfree(fs_info->super_for_commit);
security_free_mnt_opts(&fs_info->security_opts);
- kfree(fs_info);
+ kvfree(fs_info);
}
/* tree mod log functions from ctree.c */
@@ -3095,7 +3095,10 @@ btrfs_lookup_inode_extref(struct btrfs_trans_handle *trans,
u64 inode_objectid, u64 ref_objectid, int ins_len,
int cow);
-int btrfs_find_name_in_ext_backref(struct btrfs_path *path,
+int btrfs_find_name_in_backref(struct extent_buffer *leaf, int slot,
+ const char *name,
+ int name_len, struct btrfs_inode_ref **ref_ret);
+int btrfs_find_name_in_ext_backref(struct extent_buffer *leaf, int slot,
u64 ref_objectid, const char *name,
int name_len,
struct btrfs_inode_extref **extref_ret);
diff --git a/fs/btrfs/inode-item.c b/fs/btrfs/inode-item.c
index 39c968f801572ec004223893d44525c64bb9ecc0..65e1a76bf7557441b22b16d4765a531b18b23562 100644
--- a/fs/btrfs/inode-item.c
+++ b/fs/btrfs/inode-item.c
@@ -22,10 +22,10 @@
#include "transaction.h"
#include "print-tree.h"
-static int find_name_in_backref(struct btrfs_path *path, const char *name,
- int name_len, struct btrfs_inode_ref **ref_ret)
+int btrfs_find_name_in_backref(struct extent_buffer *leaf, int slot,
+ const char *name,
+ int name_len, struct btrfs_inode_ref **ref_ret)
{
- struct extent_buffer *leaf;
struct btrfs_inode_ref *ref;
unsigned long ptr;
unsigned long name_ptr;
@@ -33,9 +33,8 @@ static int find_name_in_backref(struct btrfs_path *path, const char *name,
u32 cur_offset = 0;
int len;
- leaf = path->nodes[0];
- item_size = btrfs_item_size_nr(leaf, path->slots[0]);
- ptr = btrfs_item_ptr_offset(leaf, path->slots[0]);
+ item_size = btrfs_item_size_nr(leaf, slot);
+ ptr = btrfs_item_ptr_offset(leaf, slot);
while (cur_offset < item_size) {
ref = (struct btrfs_inode_ref *)(ptr + cur_offset);
len = btrfs_inode_ref_name_len(leaf, ref);
@@ -44,18 +43,19 @@ static int find_name_in_backref(struct btrfs_path *path, const char *name,
if (len != name_len)
continue;
if (memcmp_extent_buffer(leaf, name, name_ptr, name_len) == 0) {
- *ref_ret = ref;
+ if (ref_ret)
+ *ref_ret = ref;
return 1;
}
}
return 0;
}
-int btrfs_find_name_in_ext_backref(struct btrfs_path *path, u64 ref_objectid,
+int btrfs_find_name_in_ext_backref(struct extent_buffer *leaf, int slot,
+ u64 ref_objectid,
const char *name, int name_len,
struct btrfs_inode_extref **extref_ret)
{
- struct extent_buffer *leaf;
struct btrfs_inode_extref *extref;
unsigned long ptr;
unsigned long name_ptr;
@@ -63,9 +63,8 @@ int btrfs_find_name_in_ext_backref(struct btrfs_path *path, u64 ref_objectid,
u32 cur_offset = 0;
int ref_name_len;
- leaf = path->nodes[0];
- item_size = btrfs_item_size_nr(leaf, path->slots[0]);
- ptr = btrfs_item_ptr_offset(leaf, path->slots[0]);
+ item_size = btrfs_item_size_nr(leaf, slot);
+ ptr = btrfs_item_ptr_offset(leaf, slot);
/*
* Search all extended backrefs in this item. We're only
@@ -113,7 +112,9 @@ btrfs_lookup_inode_extref(struct btrfs_trans_handle *trans,
return ERR_PTR(ret);
if (ret > 0)
return NULL;
- if (!btrfs_find_name_in_ext_backref(path, ref_objectid, name, name_len, &extref))
+ if (!btrfs_find_name_in_ext_backref(path->nodes[0], path->slots[0],
+ ref_objectid, name, name_len,
+ &extref))
return NULL;
return extref;
}
@@ -155,7 +156,8 @@ static int btrfs_del_inode_extref(struct btrfs_trans_handle *trans,
* This should always succeed so error here will make the FS
* readonly.
*/
- if (!btrfs_find_name_in_ext_backref(path, ref_objectid,
+ if (!btrfs_find_name_in_ext_backref(path->nodes[0], path->slots[0],
+ ref_objectid,
name, name_len, &extref)) {
btrfs_handle_fs_error(root->fs_info, -ENOENT, NULL);
ret = -EROFS;
@@ -225,7 +227,8 @@ int btrfs_del_inode_ref(struct btrfs_trans_handle *trans,
} else if (ret < 0) {
goto out;
}
- if (!find_name_in_backref(path, name, name_len, &ref)) {
+ if (!btrfs_find_name_in_backref(path->nodes[0], path->slots[0],
+ name, name_len, &ref)) {
ret = -ENOENT;
search_ext_refs = 1;
goto out;
@@ -293,7 +296,9 @@ static int btrfs_insert_inode_extref(struct btrfs_trans_handle *trans,
ret = btrfs_insert_empty_item(trans, root, path, &key,
ins_len);
if (ret == -EEXIST) {
- if (btrfs_find_name_in_ext_backref(path, ref_objectid,
+ if (btrfs_find_name_in_ext_backref(path->nodes[0],
+ path->slots[0],
+ ref_objectid,
name, name_len, NULL))
goto out;
@@ -351,7 +356,8 @@ int btrfs_insert_inode_ref(struct btrfs_trans_handle *trans,
if (ret == -EEXIST) {
u32 old_size;
- if (find_name_in_backref(path, name, name_len, &ref))
+ if (btrfs_find_name_in_backref(path->nodes[0], path->slots[0],
+ name, name_len, &ref))
goto out;
old_size = btrfs_item_size_nr(path->nodes[0], path->slots[0]);
@@ -365,7 +371,9 @@ int btrfs_insert_inode_ref(struct btrfs_trans_handle *trans,
ret = 0;
} else if (ret < 0) {
if (ret == -EOVERFLOW) {
- if (find_name_in_backref(path, name, name_len, &ref))
+ if (btrfs_find_name_in_backref(path->nodes[0],
+ path->slots[0],
+ name, name_len, &ref))
ret = -EEXIST;
else
ret = -EMLINK;
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index a79299a89b7d0285328e29cecaaff51ff82c5be7..f53470112670b2de73343e635e4304fd08816468 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -2043,12 +2043,15 @@ static noinline int add_pending_csums(struct btrfs_trans_handle *trans,
struct inode *inode, struct list_head *list)
{
struct btrfs_ordered_sum *sum;
+ int ret;
list_for_each_entry(sum, list, list) {
trans->adding_csums = true;
- btrfs_csum_file_blocks(trans,
+ ret = btrfs_csum_file_blocks(trans,
BTRFS_I(inode)->root->fs_info->csum_root, sum);
trans->adding_csums = false;
+ if (ret)
+ return ret;
}
return 0;
}
@@ -3062,7 +3065,11 @@ static int btrfs_finish_ordered_io(struct btrfs_ordered_extent *ordered_extent)
goto out;
}
- add_pending_csums(trans, inode, &ordered_extent->list);
+ ret = add_pending_csums(trans, inode, &ordered_extent->list);
+ if (ret) {
+ btrfs_abort_transaction(trans, ret);
+ goto out;
+ }
btrfs_ordered_update_i_size(inode, 0, ordered_extent);
ret = btrfs_update_inode_fallback(trans, root, inode);
diff --git a/fs/btrfs/relocation.c b/fs/btrfs/relocation.c
index f0c3f00e97cbe76e1fa8484efc8933842856c8d5..cd2298d185dd121bd1412e571a07952c343b0ab5 100644
--- a/fs/btrfs/relocation.c
+++ b/fs/btrfs/relocation.c
@@ -3268,8 +3268,22 @@ static int relocate_file_extent_cluster(struct inode *inode,
nr++;
}
- btrfs_set_extent_delalloc(inode, page_start, page_end, 0, NULL,
- 0);
+ ret = btrfs_set_extent_delalloc(inode, page_start, page_end, 0,
+ NULL, 0);
+ if (ret) {
+ unlock_page(page);
+ put_page(page);
+ btrfs_delalloc_release_metadata(BTRFS_I(inode),
+ PAGE_SIZE);
+ btrfs_delalloc_release_extents(BTRFS_I(inode),
+ PAGE_SIZE);
+
+ clear_extent_bits(&BTRFS_I(inode)->io_tree,
+ page_start, page_end,
+ EXTENT_LOCKED | EXTENT_BOUNDARY);
+ goto out;
+
+ }
set_page_dirty(page);
unlock_extent(&BTRFS_I(inode)->io_tree,
diff --git a/fs/btrfs/send.c b/fs/btrfs/send.c
index f306c608dc2880f1811905e033c1219dd5e356cc..484e2af793de2a86fa206196661d47cda078f0c2 100644
--- a/fs/btrfs/send.c
+++ b/fs/btrfs/send.c
@@ -5005,6 +5005,9 @@ static int send_hole(struct send_ctx *sctx, u64 end)
u64 len;
int ret = 0;
+ if (sctx->flags & BTRFS_SEND_FLAG_NO_FILE_DATA)
+ return send_update_extent(sctx, offset, end - offset);
+
p = fs_path_alloc();
if (!p)
return -ENOMEM;
diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c
index 6e71a2a783630ac15d2d910fd0613347c4a260ac..4b817947e00f39e327a244f67bbde7ebf2d6b7e0 100644
--- a/fs/btrfs/super.c
+++ b/fs/btrfs/super.c
@@ -1545,7 +1545,7 @@ static struct dentry *btrfs_mount_root(struct file_system_type *fs_type,
* it for searching for existing supers, so this lets us do that and
* then open_ctree will properly initialize everything later.
*/
- fs_info = kzalloc(sizeof(struct btrfs_fs_info), GFP_KERNEL);
+ fs_info = kvzalloc(sizeof(struct btrfs_fs_info), GFP_KERNEL);
if (!fs_info) {
error = -ENOMEM;
goto error_sec_opts;
diff --git a/fs/btrfs/sysfs.c b/fs/btrfs/sysfs.c
index a8bafed931f44232e164793852ef1bbcae73c55c..d11c70bff5a9d210acb4bb3803a0b70a005b602a 100644
--- a/fs/btrfs/sysfs.c
+++ b/fs/btrfs/sysfs.c
@@ -423,7 +423,7 @@ static ssize_t btrfs_nodesize_show(struct kobject *kobj,
{
struct btrfs_fs_info *fs_info = to_fs_info(kobj);
- return snprintf(buf, PAGE_SIZE, "%u\n", fs_info->super_copy->nodesize);
+ return snprintf(buf, PAGE_SIZE, "%u\n", fs_info->nodesize);
}
BTRFS_ATTR(, nodesize, btrfs_nodesize_show);
@@ -433,8 +433,7 @@ static ssize_t btrfs_sectorsize_show(struct kobject *kobj,
{
struct btrfs_fs_info *fs_info = to_fs_info(kobj);
- return snprintf(buf, PAGE_SIZE, "%u\n",
- fs_info->super_copy->sectorsize);
+ return snprintf(buf, PAGE_SIZE, "%u\n", fs_info->sectorsize);
}
BTRFS_ATTR(, sectorsize, btrfs_sectorsize_show);
@@ -444,8 +443,7 @@ static ssize_t btrfs_clone_alignment_show(struct kobject *kobj,
{
struct btrfs_fs_info *fs_info = to_fs_info(kobj);
- return snprintf(buf, PAGE_SIZE, "%u\n",
- fs_info->super_copy->sectorsize);
+ return snprintf(buf, PAGE_SIZE, "%u\n", fs_info->sectorsize);
}
BTRFS_ATTR(, clone_alignment, btrfs_clone_alignment_show);
diff --git a/fs/btrfs/transaction.c b/fs/btrfs/transaction.c
index 04f07144b45ce265b36af2754455accc89954005..9220f004001c4ecb2cf14b328e2353ce946106ec 100644
--- a/fs/btrfs/transaction.c
+++ b/fs/btrfs/transaction.c
@@ -1722,19 +1722,23 @@ static void update_super_roots(struct btrfs_fs_info *fs_info)
super = fs_info->super_copy;
+ /* update latest btrfs_super_block::chunk_root refs */
root_item = &fs_info->chunk_root->root_item;
- super->chunk_root = root_item->bytenr;
- super->chunk_root_generation = root_item->generation;
- super->chunk_root_level = root_item->level;
+ btrfs_set_super_chunk_root(super, root_item->bytenr);
+ btrfs_set_super_chunk_root_generation(super, root_item->generation);
+ btrfs_set_super_chunk_root_level(super, root_item->level);
+ /* update latest btrfs_super_block::root refs */
root_item = &fs_info->tree_root->root_item;
- super->root = root_item->bytenr;
- super->generation = root_item->generation;
- super->root_level = root_item->level;
+ btrfs_set_super_root(super, root_item->bytenr);
+ btrfs_set_super_generation(super, root_item->generation);
+ btrfs_set_super_root_level(super, root_item->level);
+
if (btrfs_test_opt(fs_info, SPACE_CACHE))
- super->cache_generation = root_item->generation;
+ btrfs_set_super_cache_generation(super, root_item->generation);
if (test_bit(BTRFS_FS_UPDATE_UUID_TREE_GEN, &fs_info->flags))
- super->uuid_tree_generation = root_item->generation;
+ btrfs_set_super_uuid_tree_generation(super,
+ root_item->generation);
}
int btrfs_transaction_in_commit(struct btrfs_fs_info *info)
diff --git a/fs/btrfs/tree-log.c b/fs/btrfs/tree-log.c
index 4fd19b4d667557f8b45b1ec61ef48f79ebb5f1cf..434457794c279463872a593adf600783f82390cf 100644
--- a/fs/btrfs/tree-log.c
+++ b/fs/btrfs/tree-log.c
@@ -967,7 +967,9 @@ static noinline int backref_in_log(struct btrfs_root *log,
ptr = btrfs_item_ptr_offset(path->nodes[0], path->slots[0]);
if (key->type == BTRFS_INODE_EXTREF_KEY) {
- if (btrfs_find_name_in_ext_backref(path, ref_objectid,
+ if (btrfs_find_name_in_ext_backref(path->nodes[0],
+ path->slots[0],
+ ref_objectid,
name, namelen, NULL))
match = 1;
@@ -1191,7 +1193,8 @@ static int extref_get_fields(struct extent_buffer *eb, unsigned long ref_ptr,
read_extent_buffer(eb, *name, (unsigned long)&extref->name,
*namelen);
- *index = btrfs_inode_extref_index(eb, extref);
+ if (index)
+ *index = btrfs_inode_extref_index(eb, extref);
if (parent_objectid)
*parent_objectid = btrfs_inode_extref_parent(eb, extref);
@@ -1212,11 +1215,101 @@ static int ref_get_fields(struct extent_buffer *eb, unsigned long ref_ptr,
read_extent_buffer(eb, *name, (unsigned long)(ref + 1), *namelen);
- *index = btrfs_inode_ref_index(eb, ref);
+ if (index)
+ *index = btrfs_inode_ref_index(eb, ref);
return 0;
}
+/*
+ * Take an inode reference item from the log tree and iterate all names from the
+ * inode reference item in the subvolume tree with the same key (if it exists).
+ * For any name that is not in the inode reference item from the log tree, do a
+ * proper unlink of that name (that is, remove its entry from the inode
+ * reference item and both dir index keys).
+ */
+static int unlink_old_inode_refs(struct btrfs_trans_handle *trans,
+ struct btrfs_root *root,
+ struct btrfs_path *path,
+ struct btrfs_inode *inode,
+ struct extent_buffer *log_eb,
+ int log_slot,
+ struct btrfs_key *key)
+{
+ int ret;
+ unsigned long ref_ptr;
+ unsigned long ref_end;
+ struct extent_buffer *eb;
+
+again:
+ btrfs_release_path(path);
+ ret = btrfs_search_slot(NULL, root, key, path, 0, 0);
+ if (ret > 0) {
+ ret = 0;
+ goto out;
+ }
+ if (ret < 0)
+ goto out;
+
+ eb = path->nodes[0];
+ ref_ptr = btrfs_item_ptr_offset(eb, path->slots[0]);
+ ref_end = ref_ptr + btrfs_item_size_nr(eb, path->slots[0]);
+ while (ref_ptr < ref_end) {
+ char *name = NULL;
+ int namelen;
+ u64 parent_id;
+
+ if (key->type == BTRFS_INODE_EXTREF_KEY) {
+ ret = extref_get_fields(eb, ref_ptr, &namelen, &name,
+ NULL, &parent_id);
+ } else {
+ parent_id = key->offset;
+ ret = ref_get_fields(eb, ref_ptr, &namelen, &name,
+ NULL);
+ }
+ if (ret)
+ goto out;
+
+ if (key->type == BTRFS_INODE_EXTREF_KEY)
+ ret = btrfs_find_name_in_ext_backref(log_eb, log_slot,
+ parent_id, name,
+ namelen, NULL);
+ else
+ ret = btrfs_find_name_in_backref(log_eb, log_slot, name,
+ namelen, NULL);
+
+ if (!ret) {
+ struct inode *dir;
+
+ btrfs_release_path(path);
+ dir = read_one_inode(root, parent_id);
+ if (!dir) {
+ ret = -ENOENT;
+ kfree(name);
+ goto out;
+ }
+ ret = btrfs_unlink_inode(trans, root, BTRFS_I(dir),
+ inode, name, namelen);
+ kfree(name);
+ iput(dir);
+ if (ret)
+ goto out;
+ goto again;
+ }
+
+ kfree(name);
+ ref_ptr += namelen;
+ if (key->type == BTRFS_INODE_EXTREF_KEY)
+ ref_ptr += sizeof(struct btrfs_inode_extref);
+ else
+ ref_ptr += sizeof(struct btrfs_inode_ref);
+ }
+ ret = 0;
+ out:
+ btrfs_release_path(path);
+ return ret;
+}
+
/*
* replay one inode back reference item found in the log tree.
* eb, slot and key refer to the buffer and key found in the log tree.
@@ -1345,6 +1438,19 @@ static noinline int add_inode_ref(struct btrfs_trans_handle *trans,
}
}
+ /*
+ * Before we overwrite the inode reference item in the subvolume tree
+ * with the item from the log tree, we must unlink all names from the
+ * parent directory that are in the subvolume's tree inode reference
+ * item, otherwise we end up with an inconsistent subvolume tree where
+ * dir index entries exist for a name but there is no inode reference
+ * item with the same name.
+ */
+ ret = unlink_old_inode_refs(trans, root, path, BTRFS_I(inode), eb, slot,
+ key);
+ if (ret)
+ goto out;
+
/* finally write the back reference in the inode */
ret = overwrite_item(trans, root, path, eb, slot, key);
out:
@@ -5853,7 +5959,7 @@ int btrfs_log_new_name(struct btrfs_trans_handle *trans,
* this will force the logging code to walk the dentry chain
* up for the file
*/
- if (S_ISREG(inode->vfs_inode.i_mode))
+ if (!S_ISDIR(inode->vfs_inode.i_mode))
inode->last_unlink_trans = trans->transid;
/*
diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index 2ceb924ca0d630334ab81c33b24eef97194b5874..b2d05c6b1c5672a638ba8752333c10508e366885 100644
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -4829,10 +4829,13 @@ static int __btrfs_alloc_chunk(struct btrfs_trans_handle *trans,
ndevs = min(ndevs, devs_max);
/*
- * the primary goal is to maximize the number of stripes, so use as many
- * devices as possible, even if the stripes are not maximum sized.
+ * The primary goal is to maximize the number of stripes, so use as
+ * many devices as possible, even if the stripes are not maximum sized.
+ *
+ * The DUP profile stores more than one stripe per device, the
+ * max_avail is the total size so we have to adjust.
*/
- stripe_size = devices_info[ndevs-1].max_avail;
+ stripe_size = div_u64(devices_info[ndevs - 1].max_avail, dev_stripes);
num_stripes = ndevs * dev_stripes;
/*
@@ -4867,8 +4870,6 @@ static int __btrfs_alloc_chunk(struct btrfs_trans_handle *trans,
stripe_size = devices_info[ndevs-1].max_avail;
}
- stripe_size = div_u64(stripe_size, dev_stripes);
-
/* align to BTRFS_STRIPE_LEN */
stripe_size = round_down(stripe_size, BTRFS_STRIPE_LEN);