diff options
| author | Wang Shilong <wangsl.fnst@cn.fujitsu.com> | 2013-08-06 04:29:54 +0200 |
|---|---|---|
| committer | Chris Mason <chris.mason@fusionio.com> | 2013-09-01 14:16:26 +0200 |
| commit | 742916b885edbc6453b4769458959929746e8e7e (patch) | |
| tree | 8eec349149de72e9f3d10f7d585814aa41e92324 | |
| parent | Btrfs: fix race conditions in BTRFS_IOC_FS_INFO ioctl (diff) | |
| download | linux-742916b885edbc6453b4769458959929746e8e7e.tar.xz linux-742916b885edbc6453b4769458959929746e8e7e.zip | |
Btrfs: pass gfp_t to __add_prelim_ref() to avoid always using GFP_ATOMIC
Currently, only add_delayed_refs have to allocate with GFP_ATOMIC,
So just pass arg 'gfp_t' to decide which allocation mode.
Signed-off-by: Wang Shilong <wangsl.fnst@cn.fujitsu.com>
Reviewed-by: Miao Xie <miaox@cn.fujitsu.com>
Reviewed-by: Jan Schmidt <list.btrfs@jan-o-sch.net>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>
| -rw-r--r-- | fs/btrfs/backref.c | 30 |
1 files changed, 15 insertions, 15 deletions
diff --git a/fs/btrfs/backref.c b/fs/btrfs/backref.c index 3da8f42e08a9..f3cb19114c95 100644 --- a/fs/btrfs/backref.c +++ b/fs/btrfs/backref.c @@ -160,12 +160,12 @@ struct __prelim_ref { static int __add_prelim_ref(struct list_head *head, u64 root_id, struct btrfs_key *key, int level, - u64 parent, u64 wanted_disk_byte, int count) + u64 parent, u64 wanted_disk_byte, int count, + gfp_t gfp_mask) { struct __prelim_ref *ref; - /* in case we're adding delayed refs, we're holding the refs spinlock */ - ref = kmalloc(sizeof(*ref), GFP_ATOMIC); + ref = kmalloc(sizeof(*ref), gfp_mask); if (!ref) return -ENOMEM; @@ -547,7 +547,7 @@ static int __add_delayed_refs(struct btrfs_delayed_ref_head *head, u64 seq, ref = btrfs_delayed_node_to_tree_ref(node); ret = __add_prelim_ref(prefs, ref->root, &op_key, ref->level + 1, 0, node->bytenr, - node->ref_mod * sgn); + node->ref_mod * sgn, GFP_ATOMIC); break; } case BTRFS_SHARED_BLOCK_REF_KEY: { @@ -557,7 +557,7 @@ static int __add_delayed_refs(struct btrfs_delayed_ref_head *head, u64 seq, ret = __add_prelim_ref(prefs, ref->root, NULL, ref->level + 1, ref->parent, node->bytenr, - node->ref_mod * sgn); + node->ref_mod * sgn, GFP_ATOMIC); break; } case BTRFS_EXTENT_DATA_REF_KEY: { @@ -569,7 +569,7 @@ static int __add_delayed_refs(struct btrfs_delayed_ref_head *head, u64 seq, key.offset = ref->offset; ret = __add_prelim_ref(prefs, ref->root, &key, 0, 0, node->bytenr, - node->ref_mod * sgn); + node->ref_mod * sgn, GFP_ATOMIC); break; } case BTRFS_SHARED_DATA_REF_KEY: { @@ -582,7 +582,7 @@ static int __add_delayed_refs(struct btrfs_delayed_ref_head *head, u64 seq, key.offset = ref->offset; ret = __add_prelim_ref(prefs, ref->root, &key, 0, ref->parent, node->bytenr, - node->ref_mod * sgn); + node->ref_mod * sgn, GFP_ATOMIC); break; } default: @@ -656,7 +656,7 @@ static int __add_inline_refs(struct btrfs_fs_info *fs_info, case BTRFS_SHARED_BLOCK_REF_KEY: ret = __add_prelim_ref(prefs, 0, NULL, *info_level + 1, offset, - bytenr, 1); + bytenr, 1, GFP_NOFS); break; case BTRFS_SHARED_DATA_REF_KEY: { struct btrfs_shared_data_ref *sdref; @@ -665,13 +665,13 @@ static int __add_inline_refs(struct btrfs_fs_info *fs_info, sdref = (struct btrfs_shared_data_ref *)(iref + 1); count = btrfs_shared_data_ref_count(leaf, sdref); ret = __add_prelim_ref(prefs, 0, NULL, 0, offset, - bytenr, count); + bytenr, count, GFP_NOFS); break; } case BTRFS_TREE_BLOCK_REF_KEY: ret = __add_prelim_ref(prefs, offset, NULL, *info_level + 1, 0, - bytenr, 1); + bytenr, 1, GFP_NOFS); break; case BTRFS_EXTENT_DATA_REF_KEY: { struct btrfs_extent_data_ref *dref; @@ -686,7 +686,7 @@ static int __add_inline_refs(struct btrfs_fs_info *fs_info, key.offset = btrfs_extent_data_ref_offset(leaf, dref); root = btrfs_extent_data_ref_root(leaf, dref); ret = __add_prelim_ref(prefs, root, &key, 0, 0, - bytenr, count); + bytenr, count, GFP_NOFS); break; } default: @@ -737,7 +737,7 @@ static int __add_keyed_refs(struct btrfs_fs_info *fs_info, case BTRFS_SHARED_BLOCK_REF_KEY: ret = __add_prelim_ref(prefs, 0, NULL, info_level + 1, key.offset, - bytenr, 1); + bytenr, 1, GFP_NOFS); break; case BTRFS_SHARED_DATA_REF_KEY: { struct btrfs_shared_data_ref *sdref; @@ -747,13 +747,13 @@ static int __add_keyed_refs(struct btrfs_fs_info *fs_info, struct btrfs_shared_data_ref); count = btrfs_shared_data_ref_count(leaf, sdref); ret = __add_prelim_ref(prefs, 0, NULL, 0, key.offset, - bytenr, count); + bytenr, count, GFP_NOFS); break; } case BTRFS_TREE_BLOCK_REF_KEY: ret = __add_prelim_ref(prefs, key.offset, NULL, info_level + 1, 0, - bytenr, 1); + bytenr, 1, GFP_NOFS); break; case BTRFS_EXTENT_DATA_REF_KEY: { struct btrfs_extent_data_ref *dref; @@ -769,7 +769,7 @@ static int __add_keyed_refs(struct btrfs_fs_info *fs_info, key.offset = btrfs_extent_data_ref_offset(leaf, dref); root = btrfs_extent_data_ref_root(leaf, dref); ret = __add_prelim_ref(prefs, root, &key, 0, 0, - bytenr, count); + bytenr, count, GFP_NOFS); break; } default: |