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Btrfs: crash recovery fixes

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Signed-off-by: Chris Mason <chris.mason@oracle.com>
This commit is contained in:
Chris Mason 2007-06-28 15:57:36 -04:00 • committed by David Woodhouse
parent f2654de42a
commit ccd467d60e
8 changed files with 112 additions and 48 deletions
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15
fs/btrfs/file.c
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@ -127,7 +127,7 @@ static int insert_inline_extent(struct btrfs_root *root, struct inode *inode,
ptr, kaddr + bh_offset(bh),
size);
kunmap_atomic(kaddr, KM_USER0);
mark_buffer_dirty(path->nodes[0]);
btrfs_mark_buffer_dirty(path->nodes[0]);
fail:
btrfs_free_path(path);
ret = btrfs_end_transaction(trans, root);
@ -211,11 +211,13 @@ int btrfs_drop_extents(struct btrfs_trans_handle *trans,
int found_type;
int found_extent;
int found_inline;
int recow;
path = btrfs_alloc_path();
if (!path)
return -ENOMEM;
while(1) {
recow = 0;
btrfs_release_path(root, path);
ret = btrfs_lookup_file_extent(trans, root, path, inode->i_ino,
search_start, -1);
@ -244,6 +246,10 @@ next_slot:
if (btrfs_key_type(&key) > BTRFS_EXTENT_DATA_KEY) {
goto out;
}
if (recow) {
search_start = key.offset;
continue;
}
if (btrfs_key_type(&key) == BTRFS_EXTENT_DATA_KEY) {
extent = btrfs_item_ptr(leaf, slot,
struct btrfs_file_extent_item);
@ -274,6 +280,7 @@ next_slot:
nextret = btrfs_next_leaf(root, path);
if (nextret)
goto out;
recow = 1;
} else {
path->slots[0]++;
}
@ -321,7 +328,7 @@ next_slot:
}
btrfs_set_file_extent_num_blocks(extent,
new_num);
mark_buffer_dirty(path->nodes[0]);
btrfs_mark_buffer_dirty(path->nodes[0]);
} else {
WARN_ON(1);
}
@ -452,6 +459,8 @@ static int prepare_pages(struct btrfs_root *root,
err = -ENOMEM;
goto failed_release;
}
cancel_dirty_page(pages[i], PAGE_CACHE_SIZE);
wait_on_page_writeback(pages[i]);
}
mutex_lock(&root->fs_info->fs_mutex);
@ -522,8 +531,6 @@ static int prepare_pages(struct btrfs_root *root,
mutex_unlock(&root->fs_info->fs_mutex);
for (i = 0; i < num_pages; i++) {
cancel_dirty_page(pages[i], PAGE_CACHE_SIZE);
wait_on_page_writeback(pages[i]);
offset = pos & (PAGE_CACHE_SIZE -1);
this_write = min((size_t)PAGE_CACHE_SIZE - offset, write_bytes);
if (!page_has_buffers(pages[i])) {