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

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Pull btrfs fixes from Chris Mason:
 "We've got corner cases for updating i_size that ceph was hitting,
  error handling for quotas when we run out of space, a very subtle
  snapshot deletion race, a crash while removing devices, and one
  deadlock between subvolume creation and the sb_internal code (thanks
  lockdep)."

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs:
  Btrfs: move d_instantiate outside the transaction during mksubvol
  Btrfs: fix EDQUOT handling in btrfs_delalloc_reserve_metadata
  Btrfs: fix possible stale data exposure
  Btrfs: fix missing i_size update
  Btrfs: fix race between snapshot deletion and getting inode
  Btrfs: fix missing release of the space/qgroup reservation in start_transaction()
  Btrfs: fix wrong sync_writers decrement in btrfs_file_aio_write()
  Btrfs: do not merge logged extents if we've removed them from the tree
  btrfs: don't try to notify udev about missing devices
This commit is contained in:
Linus Torvalds
2013-02-08 12:06:46 +11:00
parent 95436adaa0 1a65e24b0b
commit 8d19514fad
8 changed files with 87 additions and 36 deletions
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22
fs/btrfs/extent-tree.c
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@@ -4534,7 +4534,7 @@ int btrfs_delalloc_reserve_metadata(struct inode *inode, u64 num_bytes)
unsigned nr_extents = 0;
int extra_reserve = 0;
enum btrfs_reserve_flush_enum flush = BTRFS_RESERVE_FLUSH_ALL;
int ret;
int ret = 0;
bool delalloc_lock = true;
/* If we are a free space inode we need to not flush since we will be in
@@ -4579,20 +4579,18 @@ int btrfs_delalloc_reserve_metadata(struct inode *inode, u64 num_bytes)
csum_bytes = BTRFS_I(inode)->csum_bytes;
spin_unlock(&BTRFS_I(inode)->lock);
if (root->fs_info->quota_enabled) {
if (root->fs_info->quota_enabled)
ret = btrfs_qgroup_reserve(root, num_bytes +
nr_extents * root->leafsize);
if (ret) {
spin_lock(&BTRFS_I(inode)->lock);
calc_csum_metadata_size(inode, num_bytes, 0);
spin_unlock(&BTRFS_I(inode)->lock);
if (delalloc_lock)
mutex_unlock(&BTRFS_I(inode)->delalloc_mutex);
return ret;
}
}
ret = reserve_metadata_bytes(root, block_rsv, to_reserve, flush);
/*
* ret != 0 here means the qgroup reservation failed, we go straight to
* the shared error handling then.
*/
if (ret == 0)
ret = reserve_metadata_bytes(root, block_rsv,
to_reserve, flush);
if (ret) {
u64 to_free = 0;
unsigned dropped;