diff options
| -rw-r--r-- | fs/btrfs/disk-io.c | 2 | ||||
| -rw-r--r-- | fs/btrfs/raid56.c | 31 |
2 files changed, 26 insertions, 7 deletions
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c index 5031e6dd5938..02369a3c162e 100644 --- a/fs/btrfs/disk-io.c +++ b/fs/btrfs/disk-io.c @@ -2197,7 +2197,7 @@ int open_ctree(struct super_block *sb, ret = btrfs_alloc_stripe_hash_table(fs_info); if (ret) { - err = -ENOMEM; + err = ret; goto fail_alloc; } diff --git a/fs/btrfs/raid56.c b/fs/btrfs/raid56.c index e34e568534d9..07222053c7d8 100644 --- a/fs/btrfs/raid56.c +++ b/fs/btrfs/raid56.c @@ -188,13 +188,25 @@ int btrfs_alloc_stripe_hash_table(struct btrfs_fs_info *info) struct btrfs_stripe_hash *h; int num_entries = 1 << BTRFS_STRIPE_HASH_TABLE_BITS; int i; + int table_size; if (info->stripe_hash_table) return 0; - table = kzalloc(sizeof(*table) + sizeof(*h) * num_entries, GFP_NOFS); - if (!table) - return -ENOMEM; + /* + * The table is large, starting with order 4 and can go as high as + * order 7 in case lock debugging is turned on. + * + * Try harder to allocate and fallback to vmalloc to lower the chance + * of a failing mount. + */ + table_size = sizeof(*table) + sizeof(*h) * num_entries; + table = kzalloc(table_size, GFP_KERNEL | __GFP_NOWARN | __GFP_REPEAT); + if (!table) { + table = vzalloc(table_size); + if (!table) + return -ENOMEM; + } spin_lock_init(&table->cache_lock); INIT_LIST_HEAD(&table->stripe_cache); @@ -209,8 +221,12 @@ int btrfs_alloc_stripe_hash_table(struct btrfs_fs_info *info) } x = cmpxchg(&info->stripe_hash_table, NULL, table); - if (x) - kfree(x); + if (x) { + if (is_vmalloc_addr(x)) + vfree(x); + else + kfree(x); + } return 0; } @@ -420,7 +436,10 @@ void btrfs_free_stripe_hash_table(struct btrfs_fs_info *info) if (!info->stripe_hash_table) return; btrfs_clear_rbio_cache(info); - kfree(info->stripe_hash_table); + if (is_vmalloc_addr(info->stripe_hash_table)) + vfree(info->stripe_hash_table); + else + kfree(info->stripe_hash_table); info->stripe_hash_table = NULL; } |