btrfs: replace many BUG_ONs with proper error handling

[linux-2.6-block.git] / fs / btrfs / compression.c

diff --git a/fs/btrfs/compression.c b/fs/btrfs/compression.c
index cfd158dccdec5da2540550c9131d24b3b2cbf0b9..d11afa67c7d86711b87cdb0913da1b98f9027da8 100644 (file)
--- a/fs/btrfs/compression.c
+++ b/fs/btrfs/compression.c
@@ -391,16 +391,16 @@ int btrfs_submit_compressed_write(struct inode *inode, u64 start,
                         */
                        atomic_inc(&cb->pending_bios);
                        ret = btrfs_bio_wq_end_io(root->fs_info, bio, 0);
-                       BUG_ON(ret);
+                       BUG_ON(ret); /* -ENOMEM */
 
                        if (!skip_sum) {
                                ret = btrfs_csum_one_bio(root, inode, bio,
                                                         start, 1);
-                               BUG_ON(ret);
+                               BUG_ON(ret); /* -ENOMEM */
                        }
 
                        ret = btrfs_map_bio(root, WRITE, bio, 0, 1);
-                       BUG_ON(ret);
+                       BUG_ON(ret); /* -ENOMEM */
 
                        bio_put(bio);
 
@@ -420,15 +420,15 @@ int btrfs_submit_compressed_write(struct inode *inode, u64 start,
        bio_get(bio);
 
        ret = btrfs_bio_wq_end_io(root->fs_info, bio, 0);
-       BUG_ON(ret);
+       BUG_ON(ret); /* -ENOMEM */
 
        if (!skip_sum) {
                ret = btrfs_csum_one_bio(root, inode, bio, start, 1);
-               BUG_ON(ret);
+               BUG_ON(ret); /* -ENOMEM */
        }
 
        ret = btrfs_map_bio(root, WRITE, bio, 0, 1);
-       BUG_ON(ret);
+       BUG_ON(ret); /* -ENOMEM */
 
        bio_put(bio);
        return 0;
@@ -661,7 +661,7 @@ int btrfs_submit_compressed_read(struct inode *inode, struct bio *bio,
                        bio_get(comp_bio);
 
                        ret = btrfs_bio_wq_end_io(root->fs_info, comp_bio, 0);
-                       BUG_ON(ret);
+                       BUG_ON(ret); /* -ENOMEM */
 
                        /*
                         * inc the count before we submit the bio so
@@ -674,14 +674,14 @@ int btrfs_submit_compressed_read(struct inode *inode, struct bio *bio,
                        if (!(BTRFS_I(inode)->flags & BTRFS_INODE_NODATASUM)) {
                                ret = btrfs_lookup_bio_sums(root, inode,
                                                        comp_bio, sums);
-                               BUG_ON(ret);
+                               BUG_ON(ret); /* -ENOMEM */
                        }
                        sums += (comp_bio->bi_size + root->sectorsize - 1) /
                                root->sectorsize;
 
                        ret = btrfs_map_bio(root, READ, comp_bio,
                                            mirror_num, 0);
-                       BUG_ON(ret);
+                       BUG_ON(ret); /* -ENOMEM */
 
                        bio_put(comp_bio);
 
@@ -697,15 +697,15 @@ int btrfs_submit_compressed_read(struct inode *inode, struct bio *bio,
        bio_get(comp_bio);
 
        ret = btrfs_bio_wq_end_io(root->fs_info, comp_bio, 0);
-       BUG_ON(ret);
+       BUG_ON(ret); /* -ENOMEM */
 
        if (!(BTRFS_I(inode)->flags & BTRFS_INODE_NODATASUM)) {
                ret = btrfs_lookup_bio_sums(root, inode, comp_bio, sums);
-               BUG_ON(ret);
+               BUG_ON(ret); /* -ENOMEM */
        }
 
        ret = btrfs_map_bio(root, READ, comp_bio, mirror_num, 0);
-       BUG_ON(ret);
+       BUG_ON(ret); /* -ENOMEM */
 
        bio_put(comp_bio);
        return 0;