btrfs: fix some error checking for btrfs_decompress()
The btrfs_decompress() function mostly (u32)-1 on error but it can
also return -EPERM or other kernel error codes from zstd_decompress().
The "ret" variable is an int, so we could just check for negatives.
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Reviewed-by: Qu Wenruo <wqu@suse.com>
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index 38e285b..4691612 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -390,7 +390,7 @@
csize);
ret = btrfs_decompress(btrfs_file_extent_compression(leaf, fi),
cbuf, csize, dbuf, dsize);
- if (ret == (u32)-1) {
+ if (ret < 0) {
ret = -EIO;
goto out;
}
@@ -500,7 +500,7 @@
ret = btrfs_decompress(btrfs_file_extent_compression(leaf, fi), cbuf,
csize, dbuf, dsize);
- if (ret == (u32)-1) {
+ if (ret < 0) {
ret = -EIO;
goto out;
}