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| author | Wyatt Banks <wyatt@banksresearch.com> | 2007-11-19 10:22:33 -0500 |
|---|---|---|
| committer | Chris Mason <chris.mason@oracle.com> | 2008-09-25 11:03:58 -0400 |
| commit | 2f4cbe6442d3be7b5e4cf1607a5ab33995fe2d25 (patch) | |
| tree | a2c1554296d2d8252fb1748dd06c589572e5be54 | |
| parent | 3acd7ee876c508973eb4722de5b00b3dff4c7372 (diff) | |
| download | linux-stable-2f4cbe6442d3be7b5e4cf1607a5ab33995fe2d25.tar.gz linux-stable-2f4cbe6442d3be7b5e4cf1607a5ab33995fe2d25.tar.bz2 linux-stable-2f4cbe6442d3be7b5e4cf1607a5ab33995fe2d25.zip | |
Btrfs: Return value checking in module init
Signed-off-by: Chris Mason <chris.mason@oracle.com>
| -rw-r--r-- | fs/btrfs/extent_map.c | 16 | ||||
| -rw-r--r-- | fs/btrfs/extent_map.h | 2 | ||||
| -rw-r--r-- | fs/btrfs/super.c | 21 |
3 files changed, 33 insertions, 6 deletions
diff --git a/fs/btrfs/extent_map.c b/fs/btrfs/extent_map.c index b3ff63c4bf2a..f91f28efdb59 100644 --- a/fs/btrfs/extent_map.c +++ b/fs/btrfs/extent_map.c @@ -42,18 +42,30 @@ struct extent_page_data { struct extent_map_tree *tree; get_extent_t *get_extent; }; - -void __init extent_map_init(void) +int __init extent_map_init(void) { extent_map_cache = btrfs_cache_create("extent_map", sizeof(struct extent_map), 0, NULL); + if (!extent_map_cache) + return -ENOMEM; extent_state_cache = btrfs_cache_create("extent_state", sizeof(struct extent_state), 0, NULL); + if (!extent_state_cache) + goto free_map_cache; extent_buffer_cache = btrfs_cache_create("extent_buffers", sizeof(struct extent_buffer), 0, NULL); + if (!extent_buffer_cache) + goto free_state_cache; + return 0; + +free_state_cache: + kmem_cache_destroy(extent_state_cache); +free_map_cache: + kmem_cache_destroy(extent_map_cache); + return -ENOMEM; } void __exit extent_map_exit(void) diff --git a/fs/btrfs/extent_map.h b/fs/btrfs/extent_map.h index fbd23a72f53b..24ddc8c93461 100644 --- a/fs/btrfs/extent_map.h +++ b/fs/btrfs/extent_map.h @@ -110,7 +110,7 @@ struct extent_map *alloc_extent_map(gfp_t mask); void free_extent_map(struct extent_map *em); int extent_read_full_page(struct extent_map_tree *tree, struct page *page, get_extent_t *get_extent); -void __init extent_map_init(void); +int __init extent_map_init(void); void __exit extent_map_exit(void); int test_range_bit(struct extent_map_tree *tree, u64 start, u64 end, diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c index c46bc3911798..ffa02872c4d6 100644 --- a/fs/btrfs/super.c +++ b/fs/btrfs/super.c @@ -347,9 +347,24 @@ static int __init init_btrfs_fs(void) btrfs_init_transaction_sys(); err = btrfs_init_cachep(); if (err) - return err; - extent_map_init(); - return register_filesystem(&btrfs_fs_type); + goto free_transaction_sys; + err = extent_map_init(); + if (err) + goto free_cachep; + + err = register_filesystem(&btrfs_fs_type); + if (err) + goto free_extent_map; + return 0; + +free_extent_map: + extent_map_exit(); +free_cachep: + btrfs_destroy_cachep(); +free_transaction_sys: + btrfs_exit_transaction_sys(); + btrfs_exit_sysfs(); + return err; } static void __exit exit_btrfs_fs(void) |