Btrfs: crash recovery fixes
Signed-off-by: Chris Mason <chris.mason@oracle.com>
diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c
index fef7ba1..2456cc3 100644
--- a/fs/btrfs/file.c
+++ b/fs/btrfs/file.c
@@ -127,7 +127,7 @@
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 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 @@
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 @@
nextret = btrfs_next_leaf(root, path);
if (nextret)
goto out;
+ recow = 1;
} else {
path->slots[0]++;
}
@@ -321,7 +328,7 @@
}
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 @@
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 @@
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])) {
