Displaying 20 results from an estimated 46 matches for "root_key".
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2010 Sep 03
0
[PATCH 1/2] btrfs: document where we use BUG_ON instead of error handling
...ookup_extent_info(trans, root, buf->start,
buf->len, &refs, &flags);
- BUG_ON(ret);
+ btrfs_fixable_bug_on(ret);
BUG_ON(refs == 0);
} else {
refs = 1;
@@ -329,14 +329,14 @@ static noinline int update_ref_for_cow(struct btrfs_trans_handle *trans,
root->root_key.objectid == BTRFS_TREE_RELOC_OBJECTID) &&
!(flags & BTRFS_BLOCK_FLAG_FULL_BACKREF)) {
ret = btrfs_inc_ref(trans, root, buf, 1);
- BUG_ON(ret);
+ btrfs_fixable_bug_on(ret);
if (root->root_key.objectid ==
BTRFS_TREE_RELOC_OBJECTID) {
ret = btrfs_dec_re...
2009 Jul 07
0
[PATCH] speed up snapshot dropping
...avoid unnecessary tree block reads during
snapshot dropping. First, check tree block''s reference count and flags before
reading the tree block. if reference count > 1 and there is no need to update
backrefs, we can avoid reading the tree block. Second, save when snapshot was
created in root_key.offset. we can compare block pointer''s generation with
snapshot''s creation generation during updating backrefs. If a given block was
created before snapshot was created, the snapshot can''t be the tree block''s
owner. So we can avoid reading the block.
Signed-off-...
2009 May 12
0
[PATCH 1/2] btrfs-progs: mixed back ref support
...rmore, if reference count is one, it won''t get
+ * increased again.
+ */
+ ret = btrfs_lookup_extent_info(trans, root, buf->start,
+ buf->len, &refs, &flags);
+ BUG_ON(ret);
+ BUG_ON(refs == 0);
+
+ if (refs > 1) {
+ new_flags = flags;
+ if (owner == root->root_key.objectid &&
+ !(flags & BTRFS_BLOCK_FULL_BACKREF)) {
+ ret = btrfs_inc_ref(trans, root, buf, 1);
+ BUG_ON(ret);
+
+ BUG_ON(flags & BTRFS_BLOCK_NO_OWNER_REF);
+ new_flags |= BTRFS_BLOCK_NO_OWNER_REF;
+ new_flags |= BTRFS_BLOCK_FULL_BACKREF;
+ } else {
+ ret = btrfs_...
2009 Nov 12
0
[PATCH 03/12] Btrfs: Rewrite btrfs_drop_extents
...t(leaf, fi, extent_offset);
+ btrfs_set_file_extent_num_bytes(leaf, fi,
+ extent_end - start);
+ btrfs_mark_buffer_dirty(leaf);
+
+ if (disk_bytenr > 0) {
ret = btrfs_inc_extent_ref(trans, root,
- disk_bytenr,
- le64_to_cpu(old.disk_num_bytes), 0,
- root->root_key.objectid,
- key.objectid, key.offset -
- le64_to_cpu(old.offset));
+ disk_bytenr, num_bytes, 0,
+ root->root_key.objectid,
+ new_key.objectid,
+ start - extent_offset);
BUG_ON(ret);
+ *hint_byte = disk_bytenr;
}
+ key.offset = start;
}
+ /*
+...
2011 Jan 06
3
Offline Deduplication for Btrfs V2
Just a quick update, I''ve dropped the hashing stuff in favor of doing a memcmp
in the kernel to make sure the data is still the same. The thing that takes a
while is reading the data up from disk, so doing a memcmp of the entire buffer
isn''t that big of a deal, not to mention there''s a possiblity for malicious
users if there is a problem with the hashing algorithms we
2011 Oct 06
26
[PATCH v0 00/18] btfs: Subvolume Quota Groups
This is a first draft of a subvolume quota implementation. It is possible
to limit subvolumes and any group of subvolumes and also to track the amount
of space that will get freed when deleting snapshots.
The current version is functionally incomplete, with the main missing feature
being the initial scan and rescan of an existing filesystem.
I put some effort into writing an introduction into
2008 Sep 25
0
[PATCH 2/4] Add shared reference cache
...uct extent_buffer *buf, u32 nr_extents)
{
- u32 nritems;
struct btrfs_key key;
struct btrfs_file_extent_item *fi;
- int i;
- int level;
- int ret = 0;
+ u64 root_gen;
+ u32 nritems;
+ int i;
+ int level;
+ int ret = 0;
+ int shared = 0;
if (!root->ref_cows)
return 0;
+
+ if (root->root_key.objectid != BTRFS_TREE_RELOC_OBJECTID) {
+ shared = 0;
+ root_gen = root->root_key.offset;
+ } else {
+ shared = 1;
+ root_gen = trans->transid - 1;
+ }
level = btrfs_header_level(buf);
nritems = btrfs_header_nritems(buf);
@@ -1114,7 +1124,7 @@
goto out;
}
- ref->root_g...
2009 Nov 12
0
[PATCH 05/12] Btrfs: Avoid orphan inodes cleanup during replaying log
...o;
root->objectid = objectid;
@@ -930,7 +932,6 @@ static int __setup_root(u32 nodesize, u32 leafsize, u32 sectorsize,
root->defrag_trans_start = fs_info->generation;
init_completion(&root->kobj_unregister);
root->defrag_running = 0;
- root->defrag_level = 0;
root->root_key.objectid = objectid;
root->anon_super.s_root = NULL;
root->anon_super.s_dev = 0;
@@ -1212,8 +1213,10 @@ again:
ret = radix_tree_insert(&fs_info->fs_roots_radix,
(unsigned long)root->root_key.objectid,
root);
- if (ret == 0)
+ if (ret == 0) {
root->in_radix = 1;...
2013 Mar 04
2
[PATCH 1/2] Btrfs: fix wrong handle at error path of create_snapshot() when the commit fails
...{
- pending->error = ret;
+ pending->error = btrfs_block_rsv_add(root,
+ &pending->block_rsv,
+ to_reserve,
+ BTRFS_RESERVE_NO_FLUSH);
+ if (pending->error)
goto no_free_objectid;
- }
}
- ret = btrfs_qgroup_inherit(trans, fs_info, root->root_key.objectid,
- objectid, pending->inherit);
- if (ret) {
- pending->error = ret;
+ pending->error = btrfs_qgroup_inherit(trans, fs_info,
+ root->root_key.objectid,
+ objectid, pending->inherit);
+ if (pending->error)
goto no_free_objectid;
- }
key.ob...
2011 Oct 04
68
[patch 00/65] Error handling patchset v3
Hi all -
Here''s my current error handling patchset, against 3.1-rc8. Almost all of
this patchset is preparing for actual error handling. Before we start in
on that work, I''m trying to reduce the surface we need to worry about. It
turns out that there is a ton of code that returns an error code but never
actually reports an error.
The patchset has grown to 65 patches. 46 of them
2013 Jun 04
3
[PATCH] Btrfs: fix broken nocow after balance
Balance will create reloc_root for each fs root, and it''s going to
record last_snapshot to filter shared blocks. The side effect of
setting last_snapshot is to break nocow attributes of files.
So it turns out that checking last_snapshot does not always ensure that
a node/leaf/file_extent is shared.
That''s why shared node/leaf needs to search extent tree for number of
2008 Oct 27
0
[PATCH 3/4] update nodatacow code
...root, u64 bytenr)
{
struct btrfs_root *extent_root = root->fs_info->extent_root;
struct btrfs_path *path;
@@ -858,8 +857,8 @@ static int get_reference_status(struct b
struct btrfs_extent_ref *ref_item;
struct btrfs_key key;
struct btrfs_key found_key;
- u64 root_objectid = root->root_key.objectid;
- u64 ref_generation;
+ u64 ref_root;
+ u64 last_snapshot;
u32 nritems;
int ret;
@@ -872,7 +871,9 @@ static int get_reference_status(struct b
if (ret < 0)
goto out;
BUG_ON(ret == 0);
- if (ret < 0 || path->slots[0] == 0)
+
+ ret = -ENOENT;
+ if (path->slots[0] ==...
2011 Mar 23
0
[PATCH] Btrfs: cleanup some BUG_ON()
...rfs_extent_inline_ref_size(type);
path = btrfs_alloc_path();
- BUG_ON(!path);
+ if (!path)
+ return -ENOMEM;
path->leave_spinning = 1;
ret = btrfs_insert_empty_item(trans, fs_info->extent_root, path,
@@ -6438,10 +6439,14 @@ int btrfs_drop_subtree(struct btrfs_tran
BUG_ON(root->root_key.objectid != BTRFS_TREE_RELOC_OBJECTID);
path = btrfs_alloc_path();
- BUG_ON(!path);
+ if (!path)
+ return -ENOMEM;
wc = kzalloc(sizeof(*wc), GFP_NOFS);
- BUG_ON(!wc);
+ if (!wc) {
+ btrfs_free_path(path);
+ return -ENOMEM;
+ }
btrfs_assert_tree_locked(parent);
parent_level = btrfs_...
2012 Sep 06
2
[PATCH V4 01/12] Btrfs: fix error path in create_pending_snapshot()
...pending, &to_reserve);
@@ -983,22 +981,22 @@ static noinline int create_pending_snapshot(struct btrfs_trans_handle *trans,
to_reserve);
if (ret) {
pending->error = ret;
- goto fail;
+ goto no_free_objectid;
}
}
ret = btrfs_qgroup_inherit(trans, fs_info, root->root_key.objectid,
objectid, pending->inherit);
- kfree(pending->inherit);
if (ret) {
pending->error = ret;
- goto fail;
+ goto no_free_objectid;
}
key.objectid = objectid;
key.offset = (u64)-1;
key.type = BTRFS_ROOT_ITEM_KEY;
+ rsv = trans->block_rsv;
trans->bloc...
2008 Jun 24
1
[RFC][PATCH] btrfs orphan code
...root->commit_root = NULL;
root->sectorsize = sectorsize;
root->nodesize = nodesize;
@@ -720,6 +722,7 @@ static int __setup_root(u32 nodesize, u3
root->in_sysfs = 0;
INIT_LIST_HEAD(&root->dirty_list);
+ INIT_LIST_HEAD(&root->orphan_list);
memset(&root->root_key, 0, sizeof(root->root_key));
memset(&root->root_item, 0, sizeof(root->root_item));
memset(&root->defrag_progress, 0, sizeof(root->defrag_progress));
@@ -1515,6 +1518,8 @@ int btrfs_free_fs_root(struct btrfs_fs_i
(unsigned long)root->root_key.objectid);
if (root...
2013 Nov 19
6
[PATCH] Btrfs: fix very slow inode eviction and fs unmount
...+4554,8 @@ void btrfs_evict_inode(struct inode *inode)
trace_btrfs_inode_evict(inode);
- truncate_inode_pages(&inode->i_data, 0);
+ evict_inode_truncate_pages(inode);
+
if (inode->i_nlink &&
((btrfs_root_refs(&root->root_item) != 0 &&
root->root_key.objectid != BTRFS_ROOT_TREE_OBJECTID) ||
@@ -7379,6 +7436,7 @@ static void btrfs_invalidatepage(struct page *page, unsigned int offset,
struct extent_state *cached_state = NULL;
u64 page_start = page_offset(page);
u64 page_end = page_start + PAGE_CACHE_SIZE - 1;
+ int inode_evicting = inode-&...
2012 May 27
0
[RFC PATCH] Decrease Metadata Fragment Using A Caterpillar Band Method
...} else
parent_start = 0;
- cow = btrfs_alloc_free_block(trans, root, buf->len, parent_start,
+ if (root->fs_info->cater_factor > 1) {
+ if (btrfs_cater_factor(btrfs_header_cater(buf)) > 1)
+ cow = btrfs_grab_cater_block(trans, root, buf, parent_start,
+ root->root_key.objectid, &disk_key,
+ level, search_start, empty_size, 1);
+ else
+ cow = btrfs_alloc_free_block_cater(trans, root, buf->len, parent_start,
+ root->root_key.objectid, &disk_key,
+ level, search_start, empty_size, 1);
+ } else {
+ cow = btrfs_alloc_free_blo...
2011 Apr 28
0
[PATCH] Btrfs: check return value of btrfs_inc_extent_ref()
...), 0 deletions(-)
diff --git a/fs/btrfs/tree-log.c b/fs/btrfs/tree-log.c
index f997ec0..23fb42d 100644
--- a/fs/btrfs/tree-log.c
+++ b/fs/btrfs/tree-log.c
@@ -590,6 +590,7 @@ static noinline int replay_one_extent(struct btrfs_trans_handle *trans,
ins.objectid, ins.offset,
0, root->root_key.objectid,
key->objectid, offset);
+ BUG_ON(ret);
} else {
/*
* insert the extent pointer in the extent
--
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2011 Aug 08
0
[PATCH] Btrfs: fix how we reserve space for deleting inodes
...balance_dirty(root, nr);
-
}
if (ret == 0) {
+ trans->block_rsv = root->orphan_block_rsv;
ret = btrfs_orphan_del(trans, inode);
BUG_ON(ret);
}
+ trans->block_rsv = &root->fs_info->trans_block_rsv;
if (!(root == root->fs_info->tree_root ||
root->root_key.objectid == BTRFS_TREE_RELOC_OBJECTID))
btrfs_return_ino(root, btrfs_ino(inode));
--
1.7.5.2
--
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2013 Oct 07
0
[PATCH] Btrfs: cleanup reserved space when freeing tree log on error
...t);
- btrfs_wait_tree_block_writeback(next);
- btrfs_tree_unlock(next);
+ if (trans) {
+ btrfs_tree_lock(next);
+ btrfs_set_lock_blocking(next);
+ clean_tree_block(trans, log, next);
+ btrfs_wait_tree_block_writeback(next);
+ btrfs_tree_unlock(next);
+ }
WARN_ON(log->root_key.objectid !=
BTRFS_TREE_LOG_OBJECTID);
@@ -2608,13 +2614,10 @@ static void free_log_tree(struct btrfs_trans_handle *trans,
.process_func = process_one_buffer
};
- if (trans) {
- ret = walk_log_tree(trans, log, &wc);
-
- /* I don''t think this can happen but just in case */...