57 lines
1.8 KiB
Diff
57 lines
1.8 KiB
Diff
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From c2cefc42ebf8e32e36b1866048a02a579f2cef9a Mon Sep 17 00:00:00 2001
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From: Josef Bacik <josef@redhat.com>
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Date: Thu, 9 Dec 2010 18:27:03 +0000
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Subject: [PATCH 06/15] Btrfs-progs: update super fields for space cache
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This patch updates the super field to add the cache_generation member. It also
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makes us set it to -1 on mkfs so any new filesystem will get the space cache
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stuff turned on. Thanks,
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Signed-off-by: Josef Bacik <josef@redhat.com>
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Signed-off-by: Chris Mason <chris.mason@oracle.com>
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---
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ctree.h | 6 +++++-
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utils.c | 1 +
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2 files changed, 6 insertions(+), 1 deletions(-)
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diff --git a/ctree.h b/ctree.h
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index b79e238..962c510 100644
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--- a/ctree.h
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+++ b/ctree.h
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@@ -340,8 +340,10 @@ struct btrfs_super_block {
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char label[BTRFS_LABEL_SIZE];
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+ __le64 cache_generation;
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+
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/* future expansion */
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- __le64 reserved[32];
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+ __le64 reserved[31];
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u8 sys_chunk_array[BTRFS_SYSTEM_CHUNK_ARRAY_SIZE];
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} __attribute__ ((__packed__));
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@@ -1564,6 +1566,8 @@ BTRFS_SETGET_STACK_FUNCS(super_incompat_flags, struct btrfs_super_block,
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incompat_flags, 64);
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BTRFS_SETGET_STACK_FUNCS(super_csum_type, struct btrfs_super_block,
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csum_type, 16);
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+BTRFS_SETGET_STACK_FUNCS(super_cache_generation, struct btrfs_super_block,
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+ cache_generation, 64);
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static inline int btrfs_super_csum_size(struct btrfs_super_block *s)
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{
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diff --git a/utils.c b/utils.c
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index 2a15d86..35e17b8 100644
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--- a/utils.c
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+++ b/utils.c
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@@ -107,6 +107,7 @@ int make_btrfs(int fd, const char *device, const char *label,
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btrfs_set_super_stripesize(&super, stripesize);
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btrfs_set_super_csum_type(&super, BTRFS_CSUM_TYPE_CRC32);
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btrfs_set_super_chunk_root_generation(&super, 1);
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+ btrfs_set_super_cache_generation(&super, -1);
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if (label)
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strncpy(super.label, label, BTRFS_LABEL_SIZE - 1);
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--
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1.7.5.2.353.g5df3e
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