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authorLinus Torvalds <torvalds@linux-foundation.org>2019-09-30 10:25:24 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2019-09-30 10:25:24 -0700
commitbb48a59135926ece9b1361e8b96b33fc658830bc (patch)
treec19fe42b0c1c923b088a9250f7fbcdab9e8f266d
parent80b29b6b8cd7479a67f5e338195dbc121b30c879 (diff)
parentd4e204948fe3e0dc8e1fbf3f8f3290c9c2823be3 (diff)
Merge tag 'for-5.4-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux
Pull btrfs fixes from David Sterba: "A bunch of fixes that accumulated in recent weeks, mostly material for stable. Summary: - fix for regression from 5.3 that prevents to use balance convert with single profile - qgroup fixes: rescan race, accounting leak with multiple writers, potential leak after io failure recovery - fix for use after free in relocation (reported by KASAN) - other error handling fixups" * tag 'for-5.4-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux: btrfs: qgroup: Fix reserved data space leak if we have multiple reserve calls btrfs: qgroup: Fix the wrong target io_tree when freeing reserved data space btrfs: Fix a regression which we can't convert to SINGLE profile btrfs: relocation: fix use-after-free on dead relocation roots Btrfs: fix race setting up and completing qgroup rescan workers Btrfs: fix missing error return if writeback for extent buffer never started btrfs: adjust dirty_metadata_bytes after writeback failure of extent buffer Btrfs: fix selftests failure due to uninitialized i_mode in test inodes
-rw-r--r--fs/btrfs/extent_io.c13
-rw-r--r--fs/btrfs/qgroup.c38
-rw-r--r--fs/btrfs/relocation.c9
-rw-r--r--fs/btrfs/tests/btrfs-tests.c8
-rw-r--r--fs/btrfs/volumes.c8
5 files changed, 58 insertions, 18 deletions
diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c
index 7b32b6af322d..cceaf05aada2 100644
--- a/fs/btrfs/extent_io.c
+++ b/fs/btrfs/extent_io.c
@@ -3745,12 +3745,21 @@ err_unlock:
static void set_btree_ioerr(struct page *page)
{
struct extent_buffer *eb = (struct extent_buffer *)page->private;
+ struct btrfs_fs_info *fs_info;
SetPageError(page);
if (test_and_set_bit(EXTENT_BUFFER_WRITE_ERR, &eb->bflags))
return;
/*
+ * If we error out, we should add back the dirty_metadata_bytes
+ * to make it consistent.
+ */
+ fs_info = eb->fs_info;
+ percpu_counter_add_batch(&fs_info->dirty_metadata_bytes,
+ eb->len, fs_info->dirty_metadata_batch);
+
+ /*
* If writeback for a btree extent that doesn't belong to a log tree
* failed, increment the counter transaction->eb_write_errors.
* We do this because while the transaction is running and before it's
@@ -3986,6 +3995,10 @@ retry:
if (!ret) {
free_extent_buffer(eb);
continue;
+ } else if (ret < 0) {
+ done = 1;
+ free_extent_buffer(eb);
+ break;
}
ret = write_one_eb(eb, wbc, &epd);
diff --git a/fs/btrfs/qgroup.c b/fs/btrfs/qgroup.c
index 8d3bd799ac7d..c4bb69941c77 100644
--- a/fs/btrfs/qgroup.c
+++ b/fs/btrfs/qgroup.c
@@ -3166,9 +3166,6 @@ out:
btrfs_free_path(path);
mutex_lock(&fs_info->qgroup_rescan_lock);
- if (!btrfs_fs_closing(fs_info))
- fs_info->qgroup_flags &= ~BTRFS_QGROUP_STATUS_FLAG_RESCAN;
-
if (err > 0 &&
fs_info->qgroup_flags & BTRFS_QGROUP_STATUS_FLAG_INCONSISTENT) {
fs_info->qgroup_flags &= ~BTRFS_QGROUP_STATUS_FLAG_INCONSISTENT;
@@ -3184,16 +3181,30 @@ out:
trans = btrfs_start_transaction(fs_info->quota_root, 1);
if (IS_ERR(trans)) {
err = PTR_ERR(trans);
+ trans = NULL;
btrfs_err(fs_info,
"fail to start transaction for status update: %d",
err);
- goto done;
}
- ret = update_qgroup_status_item(trans);
- if (ret < 0) {
- err = ret;
- btrfs_err(fs_info, "fail to update qgroup status: %d", err);
+
+ mutex_lock(&fs_info->qgroup_rescan_lock);
+ if (!btrfs_fs_closing(fs_info))
+ fs_info->qgroup_flags &= ~BTRFS_QGROUP_STATUS_FLAG_RESCAN;
+ if (trans) {
+ ret = update_qgroup_status_item(trans);
+ if (ret < 0) {
+ err = ret;
+ btrfs_err(fs_info, "fail to update qgroup status: %d",
+ err);
+ }
}
+ fs_info->qgroup_rescan_running = false;
+ complete_all(&fs_info->qgroup_rescan_completion);
+ mutex_unlock(&fs_info->qgroup_rescan_lock);
+
+ if (!trans)
+ return;
+
btrfs_end_transaction(trans);
if (btrfs_fs_closing(fs_info)) {
@@ -3204,12 +3215,6 @@ out:
} else {
btrfs_err(fs_info, "qgroup scan failed with %d", err);
}
-
-done:
- mutex_lock(&fs_info->qgroup_rescan_lock);
- fs_info->qgroup_rescan_running = false;
- mutex_unlock(&fs_info->qgroup_rescan_lock);
- complete_all(&fs_info->qgroup_rescan_completion);
}
/*
@@ -3437,6 +3442,9 @@ cleanup:
while ((unode = ulist_next(&reserved->range_changed, &uiter)))
clear_extent_bit(&BTRFS_I(inode)->io_tree, unode->val,
unode->aux, EXTENT_QGROUP_RESERVED, 0, 0, NULL);
+ /* Also free data bytes of already reserved one */
+ btrfs_qgroup_free_refroot(root->fs_info, root->root_key.objectid,
+ orig_reserved, BTRFS_QGROUP_RSV_DATA);
extent_changeset_release(reserved);
return ret;
}
@@ -3481,7 +3489,7 @@ static int qgroup_free_reserved_data(struct inode *inode,
* EXTENT_QGROUP_RESERVED, we won't double free.
* So not need to rush.
*/
- ret = clear_record_extent_bits(&BTRFS_I(inode)->io_failure_tree,
+ ret = clear_record_extent_bits(&BTRFS_I(inode)->io_tree,
free_start, free_start + free_len - 1,
EXTENT_QGROUP_RESERVED, &changeset);
if (ret < 0)
diff --git a/fs/btrfs/relocation.c b/fs/btrfs/relocation.c
index 2f0e25afa486..00504657b602 100644
--- a/fs/btrfs/relocation.c
+++ b/fs/btrfs/relocation.c
@@ -1435,6 +1435,13 @@ int btrfs_init_reloc_root(struct btrfs_trans_handle *trans,
int clear_rsv = 0;
int ret;
+ /*
+ * The subvolume has reloc tree but the swap is finished, no need to
+ * create/update the dead reloc tree
+ */
+ if (test_bit(BTRFS_ROOT_DEAD_RELOC_TREE, &root->state))
+ return 0;
+
if (root->reloc_root) {
reloc_root = root->reloc_root;
reloc_root->last_trans = trans->transid;
@@ -2187,7 +2194,6 @@ static int clean_dirty_subvols(struct reloc_control *rc)
/* Merged subvolume, cleanup its reloc root */
struct btrfs_root *reloc_root = root->reloc_root;
- clear_bit(BTRFS_ROOT_DEAD_RELOC_TREE, &root->state);
list_del_init(&root->reloc_dirty_list);
root->reloc_root = NULL;
if (reloc_root) {
@@ -2196,6 +2202,7 @@ static int clean_dirty_subvols(struct reloc_control *rc)
if (ret2 < 0 && !ret)
ret = ret2;
}
+ clear_bit(BTRFS_ROOT_DEAD_RELOC_TREE, &root->state);
btrfs_put_fs_root(root);
} else {
/* Orphan reloc tree, just clean it up */
diff --git a/fs/btrfs/tests/btrfs-tests.c b/fs/btrfs/tests/btrfs-tests.c
index b5e80563efaa..99fe9bf3fdac 100644
--- a/fs/btrfs/tests/btrfs-tests.c
+++ b/fs/btrfs/tests/btrfs-tests.c
@@ -52,7 +52,13 @@ static struct file_system_type test_type = {
struct inode *btrfs_new_test_inode(void)
{
- return new_inode(test_mnt->mnt_sb);
+ struct inode *inode;
+
+ inode = new_inode(test_mnt->mnt_sb);
+ if (inode)
+ inode_init_owner(inode, NULL, S_IFREG);
+
+ return inode;
}
static int btrfs_init_test_fs(void)
diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index a324480bc88b..cdd7af424033 100644
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -4063,7 +4063,13 @@ int btrfs_balance(struct btrfs_fs_info *fs_info,
}
num_devices = btrfs_num_devices(fs_info);
- allowed = 0;
+
+ /*
+ * SINGLE profile on-disk has no profile bit, but in-memory we have a
+ * special bit for it, to make it easier to distinguish. Thus we need
+ * to set it manually, or balance would refuse the profile.
+ */
+ allowed = BTRFS_AVAIL_ALLOC_BIT_SINGLE;
for (i = 0; i < ARRAY_SIZE(btrfs_raid_array); i++)
if (num_devices >= btrfs_raid_array[i].devs_min)
allowed |= btrfs_raid_array[i].bg_flag;