It's not a big deal if we fail to allocate the array, and instead of
panic we can just give up compressing.
Signed-off-by: Li Zefan <l...@cn.fujitsu.com>
---
fs/btrfs/inode.c | 6 +++++-
1 files changed, 5 insertions(+), 1 deletions(-)
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index 0ccc743..63b4fc0 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -393,7 +393,10 @@ again:
(BTRFS_I(inode)->flags & BTRFS_INODE_COMPRESS))) {
WARN_ON(pages);
pages = kzalloc(sizeof(struct page *) * nr_pages, GFP_NOFS);
- BUG_ON(!pages);
+ if (!pages) {
+ /* just bail out to the uncompressed code */
+ goto cont;
+ }
if (BTRFS_I(inode)->force_compress)
compress_type = BTRFS_I(inode)->force_compress;
@@ -424,6 +427,7 @@ again:
will_compress = 1;
}
}
+cont:
if (start == 0) {
trans = btrfs_join_transaction(root);
BUG_ON(IS_ERR(trans));
-- 1.7.3.1
--
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