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Btrfs: fix uncheck memory allocations

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To make Btrfs code more robust, several return value checks where memory
allocation can fail are introduced. I use BUG_ON where I don't know how
to handle the error properly, which increases the number of using the
notorious BUG_ON, though.

Signed-off-by: Yoshinori Sano <yoshinori.sano@gmail.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
This commit is contained in:
Yoshinori Sano
2011-02-15 12:01:42 +00:00
committed by root
parent c622ae6085
commit dac97e516c
3 changed files with 12 additions and 0 deletions
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2
fs/btrfs/inode.c
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@@ -290,6 +290,7 @@ static noinline int add_async_extent(struct async_cow *cow,
struct async_extent *async_extent;
async_extent = kmalloc(sizeof(*async_extent), GFP_NOFS);
BUG_ON(!async_extent);
async_extent->start = start;
async_extent->ram_size = ram_size;
async_extent->compressed_size = compressed_size;
@@ -388,6 +389,7 @@ again:
(BTRFS_I(inode)->flags & BTRFS_INODE_COMPRESS))) {
WARN_ON(pages);
pages = kzalloc(sizeof(struct page *) * nr_pages, GFP_NOFS);
BUG_ON(!pages);
if (BTRFS_I(inode)->force_compress)
compress_type = BTRFS_I(inode)->force_compress;