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| author | Luis de Bethencourt <luisbg@osg.samsung.com> | 2015-10-20 14:56:23 +0100 |
|---|---|---|
| committer | David Sterba <dsterba@suse.com> | 2015-10-21 18:29:50 +0200 |
| commit | ddd664f4478a4aaf0ac67a4297e33f1992bc9be2 (patch) | |
| tree | cf3484128d2fbcb804f0791174e1e99ea208b11b | |
| parent | 0b8d8ce0297c4376d50318692e0aa53a3aaed90c (diff) | |
| download | linux-ddd664f4478a4aaf0ac67a4297e33f1992bc9be2.tar.bz2 | |
btrfs: reada: Fix returned errno code
reada is using -1 instead of the -ENOMEM defined macro to specify that
a buffer allocation failed. Since the error number is propagated, the
caller will get a -EPERM which is the wrong error condition.
Also, updating the caller to return the exact value from
reada_add_block.
Smatch tool warning:
reada_add_block() warn: returning -1 instead of -ENOMEM is sloppy
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: Luis de Bethencourt <luisbg@osg.samsung.com>
Signed-off-by: David Sterba <dsterba@suse.com>
| -rw-r--r-- | fs/btrfs/reada.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/fs/btrfs/reada.c b/fs/btrfs/reada.c index 4645cd16d5ba..619f92963e27 100644 --- a/fs/btrfs/reada.c +++ b/fs/btrfs/reada.c @@ -569,7 +569,7 @@ static int reada_add_block(struct reada_control *rc, u64 logical, rec = kzalloc(sizeof(*rec), GFP_NOFS); if (!rec) { reada_extent_put(root->fs_info, re); - return -1; + return -ENOMEM; } rec->rc = rc; @@ -918,6 +918,7 @@ struct reada_control *btrfs_reada_add(struct btrfs_root *root, u64 start; u64 generation; int level; + int ret; struct extent_buffer *node; static struct btrfs_key max_key = { .objectid = (u64)-1, @@ -943,9 +944,10 @@ struct reada_control *btrfs_reada_add(struct btrfs_root *root, generation = btrfs_header_generation(node); free_extent_buffer(node); - if (reada_add_block(rc, start, &max_key, level, generation)) { + ret = reada_add_block(rc, start, &max_key, level, generation); + if (ret) { kfree(rc); - return ERR_PTR(-ENOMEM); + return ERR_PTR(ret); } reada_start_machine(root->fs_info); |