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| author | Miao Xie <miaox@cn.fujitsu.com> | 2011-11-10 20:45:05 -0500 |
|---|---|---|
| committer | Chris Mason <chris.mason@oracle.com> | 2011-11-10 20:45:05 -0500 |
| commit | 62f30c5462374b991e7e3f42d49ce2265c1b82f1 (patch) | |
| tree | 4d991bd451bcc9e619bb4b775b4acc6a0e3fca8f /fs/btrfs | |
| parent | 2f120c05e67ae34c93786b1050c6828904314429 (diff) | |
| download | kernel_samsung_smdk4412-62f30c5462374b991e7e3f42d49ce2265c1b82f1.zip kernel_samsung_smdk4412-62f30c5462374b991e7e3f42d49ce2265c1b82f1.tar.gz kernel_samsung_smdk4412-62f30c5462374b991e7e3f42d49ce2265c1b82f1.tar.bz2 | |
Btrfs: fix deadlock caused by the race between relocation
We can not do flushable reservation for the relocation when we create snapshot,
because it may make the transaction commit task and the flush task wait for
each other and the deadlock happens.
Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Diffstat (limited to 'fs/btrfs')
| -rw-r--r-- | fs/btrfs/transaction.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/fs/btrfs/transaction.c b/fs/btrfs/transaction.c index 960835e..6a0574e 100644 --- a/fs/btrfs/transaction.c +++ b/fs/btrfs/transaction.c @@ -882,8 +882,8 @@ static noinline int create_pending_snapshot(struct btrfs_trans_handle *trans, btrfs_reloc_pre_snapshot(trans, pending, &to_reserve); if (to_reserve > 0) { - ret = btrfs_block_rsv_add(root, &pending->block_rsv, - to_reserve); + ret = btrfs_block_rsv_add_noflush(root, &pending->block_rsv, + to_reserve); if (ret) { pending->error = ret; goto fail; |