#include "tree-log.h"
#include "free-space-cache.h"
#include "free-space-tree.h"
-#include "rcu-string.h"
#include "dev-replace.h"
#include "raid56.h"
#include "sysfs.h"
struct folio *folio = eb->folios[i];
u64 start = max_t(u64, eb->start, folio_pos(folio));
u64 end = min_t(u64, eb->start + eb->len,
- folio_pos(folio) + folio_size(folio));
+ folio_pos(folio) + eb->folio_size);
u32 len = end - start;
ret = btrfs_repair_io_failure(fs_info, 0, start, len,
static int btree_writepages(struct address_space *mapping,
struct writeback_control *wbc)
{
- struct btrfs_fs_info *fs_info;
int ret;
if (wbc->sync_mode == WB_SYNC_NONE) {
+ struct btrfs_fs_info *fs_info;
if (wbc->for_kupdate)
return 0;
- fs_info = BTRFS_I(mapping->host)->root->fs_info;
+ fs_info = inode_to_fs_info(mapping->host);
/* this is a bit racy, but that's ok */
ret = __percpu_counter_compare(&fs_info->dirty_metadata_bytes,
BTRFS_DIRTY_METADATA_THRESH,
size_t length)
{
struct extent_io_tree *tree;
- tree = &BTRFS_I(folio->mapping->host)->io_tree;
+
+ tree = &folio_to_inode(folio)->io_tree;
extent_invalidate_folio(tree, folio, offset);
btree_release_folio(folio, GFP_NOFS);
if (folio_get_private(folio)) {
- btrfs_warn(BTRFS_I(folio->mapping->host)->root->fs_info,
+ btrfs_warn(folio_to_fs_info(folio),
"folio private not zero on folio %llu",
(unsigned long long)folio_pos(folio));
folio_detach_private(folio);
static bool btree_dirty_folio(struct address_space *mapping,
struct folio *folio)
{
- struct btrfs_fs_info *fs_info = btrfs_sb(mapping->host->i_sb);
+ struct btrfs_fs_info *fs_info = inode_to_fs_info(mapping->host);
struct btrfs_subpage_info *spi = fs_info->subpage_info;
struct btrfs_subpage *subpage;
struct extent_buffer *eb;
btrfs_err(fs_info, "leaked root %s refcount %d",
btrfs_root_name(&root->root_key, buf),
refcount_read(&root->refs));
+ WARN_ON_ONCE(1);
while (refcount_read(&root->refs) > 1)
btrfs_put_root(root);
btrfs_put_root(root);
*
* @objectid: root id
* @anon_dev: preallocated anonymous block device number for new roots,
- * pass 0 for new allocation.
+ * pass NULL for a new allocation.
* @check_ref: whether to check root item references, If true, return -ENOENT
* for orphan roots
*/
static struct btrfs_root *btrfs_get_root_ref(struct btrfs_fs_info *fs_info,
- u64 objectid, dev_t anon_dev,
+ u64 objectid, dev_t *anon_dev,
bool check_ref)
{
struct btrfs_root *root;
* that common but still possible. In that case, we just need
* to free the anon_dev.
*/
- if (unlikely(anon_dev)) {
- free_anon_bdev(anon_dev);
- anon_dev = 0;
+ if (unlikely(anon_dev && *anon_dev)) {
+ free_anon_bdev(*anon_dev);
+ *anon_dev = 0;
}
if (check_ref && btrfs_root_refs(&root->root_item) == 0) {
goto fail;
}
- ret = btrfs_init_fs_root(root, anon_dev);
+ ret = btrfs_init_fs_root(root, anon_dev ? *anon_dev : 0);
if (ret)
goto fail;
* root's anon_dev to 0 to avoid a double free, once by btrfs_put_root()
* and once again by our caller.
*/
- if (anon_dev)
+ if (anon_dev && *anon_dev)
root->anon_dev = 0;
btrfs_put_root(root);
return ERR_PTR(ret);
struct btrfs_root *btrfs_get_fs_root(struct btrfs_fs_info *fs_info,
u64 objectid, bool check_ref)
{
- return btrfs_get_root_ref(fs_info, objectid, 0, check_ref);
+ return btrfs_get_root_ref(fs_info, objectid, NULL, check_ref);
}
/*
* the anonymous block device id
*
* @objectid: tree objectid
- * @anon_dev: if zero, allocate a new anonymous block device or use the
- * parameter value
+ * @anon_dev: if NULL, allocate a new anonymous block device or use the
+ * parameter value if not NULL
*/
struct btrfs_root *btrfs_get_new_fs_root(struct btrfs_fs_info *fs_info,
- u64 objectid, dev_t anon_dev)
+ u64 objectid, dev_t *anon_dev)
{
return btrfs_get_root_ref(fs_info, objectid, anon_dev, true);
}
struct btrfs_key location;
int ret;
- BUG_ON(!fs_info->tree_root);
+ ASSERT(fs_info->tree_root);
ret = load_global_roots(tree_root);
if (ret)
int ret;
fs_info->sb = sb;
+ /* Temporary fixed values for block size until we read the superblock. */
sb->s_blocksize = BTRFS_BDEV_BLOCKSIZE;
sb->s_blocksize_bits = blksize_bits(BTRFS_BDEV_BLOCKSIZE);
sb->s_bdi->ra_pages *= btrfs_super_num_devices(disk_super);
sb->s_bdi->ra_pages = max(sb->s_bdi->ra_pages, SZ_4M / PAGE_SIZE);
+ /* Update the values for the current filesystem. */
sb->s_blocksize = sectorsize;
sb->s_blocksize_bits = blksize_bits(sectorsize);
memcpy(&sb->s_uuid, fs_info->fs_devices->fsid, BTRFS_FSID_SIZE);
struct inode *inode = NULL;
btrfs_inode = list_first_entry(&splice, struct btrfs_inode,
delalloc_inodes);
- __btrfs_del_delalloc_inode(root, btrfs_inode);
+ btrfs_del_delalloc_inode(btrfs_inode);
spin_unlock(&root->delalloc_lock);
/*
ret = btrfs_search_slot(NULL, root, &search_key, path, 0, 0);
if (ret < 0)
goto error;
- BUG_ON(ret == 0); /* Corruption */
+ if (ret == 0) {
+ /*
+ * Key with offset -1 found, there would have to exist a root
+ * with such id, but this is out of valid range.
+ */
+ ret = -EUCLEAN;
+ goto error;
+ }
if (path->slots[0] > 0) {
slot = path->slots[0] - 1;
l = path->nodes[0];
projects / linux-2.6-microblaze.git / blobdiff