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authorChris Mason <chris.mason@oracle.com>2011-02-16 13:10:41 -0500
committerChris Mason <chris.mason@oracle.com>2011-02-16 15:28:36 -0500
commit91435650c233b93e0da389db74f4b2c11c5ad2d4 (patch)
treec4f8fef1348a0ac188dca47020d86b206ed5d41f /fs
parentc26a920373a983b52223eed5a13b97404d8b4158 (diff)
downloadop-kernel-dev-91435650c233b93e0da389db74f4b2c11c5ad2d4.zip
op-kernel-dev-91435650c233b93e0da389db74f4b2c11c5ad2d4.tar.gz
Btrfs: put ENOSPC debugging under a mount option
ENOSPC in btrfs is getting to the point where the extra debugging isn't required. I've put it under mount -o enospc_debug just in case someone is having difficult problems. Signed-off-by: Chris Mason <chris.mason@oracle.com>
Diffstat (limited to 'fs')
-rw-r--r--fs/btrfs/ctree.h1
-rw-r--r--fs/btrfs/extent-tree.c2
-rw-r--r--fs/btrfs/super.c7
3 files changed, 8 insertions, 2 deletions
diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h
index 7219537..6297701b 100644
--- a/fs/btrfs/ctree.h
+++ b/fs/btrfs/ctree.h
@@ -1254,6 +1254,7 @@ struct btrfs_root {
#define BTRFS_MOUNT_SPACE_CACHE (1 << 12)
#define BTRFS_MOUNT_CLEAR_CACHE (1 << 13)
#define BTRFS_MOUNT_USER_SUBVOL_RM_ALLOWED (1 << 14)
+#define BTRFS_MOUNT_ENOSPC_DEBUG (1 << 15)
#define btrfs_clear_opt(o, opt) ((o) &= ~BTRFS_MOUNT_##opt)
#define btrfs_set_opt(o, opt) ((o) |= BTRFS_MOUNT_##opt)
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index a7aaa10..d375fc0 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -5377,7 +5377,7 @@ again:
num_bytes, data, 1);
goto again;
}
- if (ret == -ENOSPC) {
+ if (ret == -ENOSPC && btrfs_test_opt(root, ENOSPC_DEBUG)) {
struct btrfs_space_info *sinfo;
sinfo = __find_space_info(root->fs_info, data);
diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c
index 0209b5f..db0a827 100644
--- a/fs/btrfs/super.c
+++ b/fs/btrfs/super.c
@@ -155,7 +155,8 @@ enum {
Opt_nossd, Opt_ssd_spread, Opt_thread_pool, Opt_noacl, Opt_compress,
Opt_compress_type, Opt_compress_force, Opt_compress_force_type,
Opt_notreelog, Opt_ratio, Opt_flushoncommit, Opt_discard,
- Opt_space_cache, Opt_clear_cache, Opt_user_subvol_rm_allowed, Opt_err,
+ Opt_space_cache, Opt_clear_cache, Opt_user_subvol_rm_allowed,
+ Opt_enospc_debug, Opt_err,
};
static match_table_t tokens = {
@@ -184,6 +185,7 @@ static match_table_t tokens = {
{Opt_space_cache, "space_cache"},
{Opt_clear_cache, "clear_cache"},
{Opt_user_subvol_rm_allowed, "user_subvol_rm_allowed"},
+ {Opt_enospc_debug, "enospc_debug"},
{Opt_err, NULL},
};
@@ -358,6 +360,9 @@ int btrfs_parse_options(struct btrfs_root *root, char *options)
case Opt_user_subvol_rm_allowed:
btrfs_set_opt(info->mount_opt, USER_SUBVOL_RM_ALLOWED);
break;
+ case Opt_enospc_debug:
+ btrfs_set_opt(info->mount_opt, ENOSPC_DEBUG);
+ break;
case Opt_err:
printk(KERN_INFO "btrfs: unrecognized mount option "
"'%s'\n", p);
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