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authorLinus Torvalds <torvalds@linux-foundation.org>2016-09-09 22:52:31 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2016-09-09 22:52:31 +0300
commitf4a9c169c29efea31b22aec0012ad29df6cf84d4 (patch)
treecc26d338a7a752b63351972ca1aa14dfe0bbdf0e /fs
parent067c2f472d81b8b235176ce8e2cb221c4edc1a9e (diff)
parentb7f3c7d345f72240055efcdf4111fb2e0d01be99 (diff)
downloadlinux-f4a9c169c29efea31b22aec0012ad29df6cf84d4.tar.xz
Merge branch 'for-linus-4.8' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs
Pull btrfs fixes from Chris Mason: "I'm not proud of how long it took me to track down that one liner in btrfs_sync_log(), but the good news is the patches I was trying to blame for these problems were actually fine (sorry Filipe)" * 'for-linus-4.8' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs: btrfs: introduce tickets_id to determine whether asynchronous metadata reclaim work makes progress btrfs: remove root_log_ctx from ctx list before btrfs_sync_log returns btrfs: do not decrease bytes_may_use when replaying extents
Diffstat (limited to 'fs')
-rw-r--r--fs/btrfs/ctree.h1
-rw-r--r--fs/btrfs/extent-tree.c23
-rw-r--r--fs/btrfs/tree-log.c1
3 files changed, 17 insertions, 8 deletions
diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h
index eff3993c77b3..33fe03551105 100644
--- a/fs/btrfs/ctree.h
+++ b/fs/btrfs/ctree.h
@@ -427,6 +427,7 @@ struct btrfs_space_info {
struct list_head ro_bgs;
struct list_head priority_tickets;
struct list_head tickets;
+ u64 tickets_id;
struct rw_semaphore groups_sem;
/* for block groups in our same type */
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index 8c8a4d1e02b9..38c2df84cabd 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -4966,12 +4966,12 @@ static void wake_all_tickets(struct list_head *head)
*/
static void btrfs_async_reclaim_metadata_space(struct work_struct *work)
{
- struct reserve_ticket *last_ticket = NULL;
struct btrfs_fs_info *fs_info;
struct btrfs_space_info *space_info;
u64 to_reclaim;
int flush_state;
int commit_cycles = 0;
+ u64 last_tickets_id;
fs_info = container_of(work, struct btrfs_fs_info, async_reclaim_work);
space_info = __find_space_info(fs_info, BTRFS_BLOCK_GROUP_METADATA);
@@ -4984,8 +4984,7 @@ static void btrfs_async_reclaim_metadata_space(struct work_struct *work)
spin_unlock(&space_info->lock);
return;
}
- last_ticket = list_first_entry(&space_info->tickets,
- struct reserve_ticket, list);
+ last_tickets_id = space_info->tickets_id;
spin_unlock(&space_info->lock);
flush_state = FLUSH_DELAYED_ITEMS_NR;
@@ -5005,10 +5004,10 @@ static void btrfs_async_reclaim_metadata_space(struct work_struct *work)
space_info);
ticket = list_first_entry(&space_info->tickets,
struct reserve_ticket, list);
- if (last_ticket == ticket) {
+ if (last_tickets_id == space_info->tickets_id) {
flush_state++;
} else {
- last_ticket = ticket;
+ last_tickets_id = space_info->tickets_id;
flush_state = FLUSH_DELAYED_ITEMS_NR;
if (commit_cycles)
commit_cycles--;
@@ -5384,6 +5383,7 @@ again:
list_del_init(&ticket->list);
num_bytes -= ticket->bytes;
ticket->bytes = 0;
+ space_info->tickets_id++;
wake_up(&ticket->wait);
} else {
ticket->bytes -= num_bytes;
@@ -5426,6 +5426,7 @@ again:
num_bytes -= ticket->bytes;
space_info->bytes_may_use += ticket->bytes;
ticket->bytes = 0;
+ space_info->tickets_id++;
wake_up(&ticket->wait);
} else {
trace_btrfs_space_reservation(fs_info, "space_info",
@@ -8216,6 +8217,7 @@ int btrfs_alloc_logged_file_extent(struct btrfs_trans_handle *trans,
{
int ret;
struct btrfs_block_group_cache *block_group;
+ struct btrfs_space_info *space_info;
/*
* Mixed block groups will exclude before processing the log so we only
@@ -8231,9 +8233,14 @@ int btrfs_alloc_logged_file_extent(struct btrfs_trans_handle *trans,
if (!block_group)
return -EINVAL;
- ret = btrfs_add_reserved_bytes(block_group, ins->offset,
- ins->offset, 0);
- BUG_ON(ret); /* logic error */
+ space_info = block_group->space_info;
+ spin_lock(&space_info->lock);
+ spin_lock(&block_group->lock);
+ space_info->bytes_reserved += ins->offset;
+ block_group->reserved += ins->offset;
+ spin_unlock(&block_group->lock);
+ spin_unlock(&space_info->lock);
+
ret = alloc_reserved_file_extent(trans, root, 0, root_objectid,
0, owner, offset, ins, 1);
btrfs_put_block_group(block_group);
diff --git a/fs/btrfs/tree-log.c b/fs/btrfs/tree-log.c
index e935035ac034..ef9c55bc7907 100644
--- a/fs/btrfs/tree-log.c
+++ b/fs/btrfs/tree-log.c
@@ -2867,6 +2867,7 @@ int btrfs_sync_log(struct btrfs_trans_handle *trans,
if (log_root_tree->log_transid_committed >= root_log_ctx.log_transid) {
blk_finish_plug(&plug);
+ list_del_init(&root_log_ctx.list);
mutex_unlock(&log_root_tree->log_mutex);
ret = root_log_ctx.log_ret;
goto out;