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@@ -24,6 +24,7 @@
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#include <linux/highmem.h>
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#include <linux/highmem.h>
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#include <linux/time.h>
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#include <linux/time.h>
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#include <linux/init.h>
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#include <linux/init.h>
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+#include <linux/seq_file.h>
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#include <linux/string.h>
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#include <linux/string.h>
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#include <linux/smp_lock.h>
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#include <linux/smp_lock.h>
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#include <linux/backing-dev.h>
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#include <linux/backing-dev.h>
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@@ -385,6 +386,37 @@ int btrfs_sync_fs(struct super_block *sb, int wait)
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return ret;
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return ret;
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}
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}
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+static int btrfs_show_options(struct seq_file *seq, struct vfsmount *vfs)
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+{
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+ struct btrfs_root *root = btrfs_sb(vfs->mnt_sb);
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+ struct btrfs_fs_info *info = root->fs_info;
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+
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+ if (btrfs_test_opt(root, DEGRADED))
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+ seq_puts(seq, ",degraded");
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+ if (btrfs_test_opt(root, NODATASUM))
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+ seq_puts(seq, ",nodatasum");
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+ if (btrfs_test_opt(root, NODATACOW))
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+ seq_puts(seq, ",nodatacow");
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+ if (btrfs_test_opt(root, NOBARRIER))
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+ seq_puts(seq, ",nobarrier");
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+ if (info->max_extent != (u64)-1)
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+ seq_printf(seq, ",max_extent=%llu", info->max_extent);
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+ if (info->max_inline != 8192 * 1024)
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+ seq_printf(seq, ",max_inline=%llu", info->max_inline);
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+ if (info->alloc_start != 0)
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+ seq_printf(seq, ",alloc_start=%llu", info->alloc_start);
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+ if (info->thread_pool_size != min_t(unsigned long,
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+ num_online_cpus() + 2, 8))
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+ seq_printf(seq, ",thread_pool=%d", info->thread_pool_size);
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+ if (btrfs_test_opt(root, COMPRESS))
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+ seq_puts(seq, ",compress");
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+ if (btrfs_test_opt(root, SSD))
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+ seq_puts(seq, ",ssd");
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+ if (!(root->fs_info->sb->s_flags & MS_POSIXACL))
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+ seq_puts(seq, ",noacl");
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+ return 0;
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+}
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+
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static void btrfs_write_super(struct super_block *sb)
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static void btrfs_write_super(struct super_block *sb)
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{
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{
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sb->s_dirt = 0;
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sb->s_dirt = 0;
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@@ -630,7 +662,7 @@ static struct super_operations btrfs_super_ops = {
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.put_super = btrfs_put_super,
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.put_super = btrfs_put_super,
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.write_super = btrfs_write_super,
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.write_super = btrfs_write_super,
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.sync_fs = btrfs_sync_fs,
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.sync_fs = btrfs_sync_fs,
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- .show_options = generic_show_options,
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+ .show_options = btrfs_show_options,
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.write_inode = btrfs_write_inode,
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.write_inode = btrfs_write_inode,
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.dirty_inode = btrfs_dirty_inode,
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.dirty_inode = btrfs_dirty_inode,
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.alloc_inode = btrfs_alloc_inode,
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.alloc_inode = btrfs_alloc_inode,
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