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authorTsutomu Itoh <t-itoh@jp.fujitsu.com>2011-04-25 19:43:52 -0400
committerChris Mason <chris.mason@oracle.com>2011-04-25 19:43:52 -0400
commit8d413713ca744fa00cf4e05d4054d80727b84789 (patch)
treedf29b480d83806cd4e85508ac676eb69323ddc79
parent43e817a1fdda17f3357602ed7964c248c8c53ae0 (diff)
downloadlinux-8d413713ca744fa00cf4e05d4054d80727b84789.tar.gz
Btrfs: check return value of kmalloc()
The check on the return value of kmalloc() is added to some places. Signed-off-by: Tsutomu Itoh <t-itoh@jp.fujitsu.com> Signed-off-by: Chris Mason <chris.mason@oracle.com>
-rw-r--r--fs/btrfs/extent-tree.c4
-rw-r--r--fs/btrfs/inode.c3
2 files changed, 7 insertions, 0 deletions
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index 31f33ba56fe..cd52f7f556e 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -8059,6 +8059,10 @@ static noinline int relocate_one_extent(struct btrfs_root *extent_root,
u64 group_start = group->key.objectid;
new_extents = kmalloc(sizeof(*new_extents),
GFP_NOFS);
+ if (!new_extents) {
+ ret = -ENOMEM;
+ goto out;
+ }
nr_extents = 1;
ret = get_new_locations(reloc_inode,
extent_key,
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index a4157cfdd53..c718d274a35 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -953,6 +953,7 @@ static int cow_file_range_async(struct inode *inode, struct page *locked_page,
1, 0, NULL, GFP_NOFS);
while (start < end) {
async_cow = kmalloc(sizeof(*async_cow), GFP_NOFS);
+ BUG_ON(!async_cow);
async_cow->inode = inode;
async_cow->root = root;
async_cow->locked_page = locked_page;
@@ -5001,6 +5002,8 @@ static noinline int uncompress_inline(struct btrfs_path *path,
inline_size = btrfs_file_extent_inline_item_len(leaf,
btrfs_item_nr(leaf, path->slots[0]));
tmp = kmalloc(inline_size, GFP_NOFS);
+ if (!tmp)
+ return -ENOMEM;
ptr = btrfs_file_extent_inline_start(item);
read_extent_buffer(leaf, tmp, ptr, inline_size);