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| author | Tsutomu Itoh <t-itoh@jp.fujitsu.com> | 2012-05-29 18:10:13 +0900 |
|---|---|---|
| committer | Josef Bacik <josef@redhat.com> | 2012-05-30 10:23:41 -0400 |
| commit | 018642a1f197887058e97291460b890d296e8953 (patch) | |
| tree | 5fc77a516728d0281873dc19f66ef9ca9e92ae34 | |
| parent | 733f4fbbc1083aa343da739f46ee839705d6cfe3 (diff) | |
| download | linux-3.10-018642a1f197887058e97291460b890d296e8953.tar.gz linux-3.10-018642a1f197887058e97291460b890d296e8953.tar.bz2 linux-3.10-018642a1f197887058e97291460b890d296e8953.zip | |
Btrfs: return value of btrfs_read_buffer is checked correctly
btrfs_read_buffer() has the possibility of returning the error.
Therefore, I add the code in which the return value of btrfs_read_buffer()
is checked.
Signed-off-by: Tsutomu Itoh <t-itoh@jp.fujitsu.com>
| -rw-r--r-- | fs/btrfs/ctree.c | 6 | ||||
| -rw-r--r-- | fs/btrfs/tree-log.c | 16 |
2 files changed, 18 insertions, 4 deletions
diff --git a/fs/btrfs/ctree.c b/fs/btrfs/ctree.c index 26847999c64..99fcad631a2 100644 --- a/fs/btrfs/ctree.c +++ b/fs/btrfs/ctree.c @@ -739,7 +739,11 @@ int btrfs_realloc_node(struct btrfs_trans_handle *trans, if (!cur) return -EIO; } else if (!uptodate) { - btrfs_read_buffer(cur, gen); + err = btrfs_read_buffer(cur, gen); + if (err) { + free_extent_buffer(cur); + return err; + } } } if (search_start == 0) diff --git a/fs/btrfs/tree-log.c b/fs/btrfs/tree-log.c index eb1ae908582..6f22a4fca8d 100644 --- a/fs/btrfs/tree-log.c +++ b/fs/btrfs/tree-log.c @@ -1628,7 +1628,9 @@ static int replay_one_buffer(struct btrfs_root *log, struct extent_buffer *eb, int i; int ret; - btrfs_read_buffer(eb, gen); + ret = btrfs_read_buffer(eb, gen); + if (ret) + return ret; level = btrfs_header_level(eb); @@ -1749,7 +1751,11 @@ static noinline int walk_down_log_tree(struct btrfs_trans_handle *trans, path->slots[*level]++; if (wc->free) { - btrfs_read_buffer(next, ptr_gen); + ret = btrfs_read_buffer(next, ptr_gen); + if (ret) { + free_extent_buffer(next); + return ret; + } btrfs_tree_lock(next); btrfs_set_lock_blocking(next); @@ -1766,7 +1772,11 @@ static noinline int walk_down_log_tree(struct btrfs_trans_handle *trans, free_extent_buffer(next); continue; } - btrfs_read_buffer(next, ptr_gen); + ret = btrfs_read_buffer(next, ptr_gen); + if (ret) { + free_extent_buffer(next); + return ret; + } WARN_ON(*level <= 0); if (path->nodes[*level-1]) |