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Merge branch 'for-linus-4.6' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs

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Pull btrfs fixes from Chris Mason:
 "These are bug fixes, including a really old fsync bug, and a few trace
  points to help us track down problems in the quota code"

* 'for-linus-4.6' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs:
  Btrfs: fix file/data loss caused by fsync after rename and new inode
  btrfs: Reset IO error counters before start of device replacing
  btrfs: Add qgroup tracing
  Btrfs: don't use src fd for printk
  btrfs: fallback to vmalloc in btrfs_compare_tree
  btrfs: handle non-fatal errors in btrfs_qgroup_inherit()
  btrfs: Output more info for enospc_debug mount option
  Btrfs: fix invalid reference in replace_path
  Btrfs: Improve FL_KEEP_SIZE handling in fallocate
This commit is contained in:
Linus Torvalds
2016-04-09 10:41:34 -07:00
parent 6759212640 56f23fdbb6
commit 839a3f7657
9 changed files with 303 additions and 33 deletions
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21
fs/btrfs/extent-tree.c
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@@ -9386,15 +9386,23 @@ int btrfs_can_relocate(struct btrfs_root *root, u64 bytenr)
u64 dev_min = 1;
u64 dev_nr = 0;
u64 target;
int debug;
int index;
int full = 0;
int ret = 0;
debug = btrfs_test_opt(root, ENOSPC_DEBUG);
block_group = btrfs_lookup_block_group(root->fs_info, bytenr);
/* odd, couldn't find the block group, leave it alone */
if (!block_group)
if (!block_group) {
if (debug)
btrfs_warn(root->fs_info,
"can't find block group for bytenr %llu",
bytenr);
return -1;
}
min_free = btrfs_block_group_used(&block_group->item);
@@ -9448,8 +9456,13 @@ int btrfs_can_relocate(struct btrfs_root *root, u64 bytenr)
* this is just a balance, so if we were marked as full
* we know there is no space for a new chunk
*/
if (full)
if (full) {
if (debug)
btrfs_warn(root->fs_info,
"no space to alloc new chunk for block group %llu",
block_group->key.objectid);
goto out;
}
index = get_block_group_index(block_group);
}
@@ -9496,6 +9509,10 @@ int btrfs_can_relocate(struct btrfs_root *root, u64 bytenr)
ret = -1;
}
}
if (debug && ret == -1)
btrfs_warn(root->fs_info,
"no space to allocate a new chunk for block group %llu",
block_group->key.objectid);
mutex_unlock(&root->fs_info->chunk_mutex);
btrfs_end_transaction(trans, root);
out: