diff mbox series

[v7,09/39] btrfs: disallow inode_cache in ZONED mode

Message ID 20200911123259.3782926-10-naohiro.aota@wdc.com (mailing list archive)
State New, archived
Headers show
Series btrfs: zoned block device support | expand

Commit Message

Naohiro Aota Sept. 11, 2020, 12:32 p.m. UTC 
inode_cache use pre-allocation to write its cache data. However,
pre-allocation is completely disabled in ZONED mode.

We can technically enable inode_cache in the same way as relocation.
However, inode_cache is rarely used and the man page discourage using it.
So, let's just disable it for now.

Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Naohiro Aota <naohiro.aota@wdc.com>
---
 fs/btrfs/zoned.c | 6 ++++++
 1 file changed, 6 insertions(+)
diff mbox series

Patch

diff --git a/fs/btrfs/zoned.c b/fs/btrfs/zoned.c
index 8cd43d2d5611..e47698d313a5 100644
--- a/fs/btrfs/zoned.c
+++ b/fs/btrfs/zoned.c
@@ -297,5 +297,11 @@  int btrfs_check_mountopts_zoned(struct btrfs_fs_info *info)
 		return -EOPNOTSUPP;
 	}
 
+	if (btrfs_test_pending(info, SET_INODE_MAP_CACHE)) {
+		btrfs_err(info,
+		  "cannot enable inode map caching with ZONED mode");
+		return -EOPNOTSUPP;
+	}
+
 	return 0;
 }