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Btrfs: Disable sysfs files on older kernels
Signed-off-by: Chris Mason <chris.mason@oracle.com>
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2e1a992e31
commit
55d4741489
1 changed files with 34 additions and 0 deletions
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@ -28,6 +28,7 @@
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#include "disk-io.h"
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#include "disk-io.h"
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#include "transaction.h"
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#include "transaction.h"
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#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,25)
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static ssize_t root_blocks_used_show(struct btrfs_root *root, char *buf)
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static ssize_t root_blocks_used_show(struct btrfs_root *root, char *buf)
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{
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{
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return snprintf(buf, PAGE_SIZE, "%llu\n",
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return snprintf(buf, PAGE_SIZE, "%llu\n",
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@ -265,3 +266,36 @@ void btrfs_exit_sysfs()
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{
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{
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kset_unregister(btrfs_kset);
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kset_unregister(btrfs_kset);
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}
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}
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#else
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int btrfs_sysfs_add_super(struct btrfs_fs_info *fs)
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{
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return 0;
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}
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int btrfs_sysfs_add_root(struct btrfs_root *root)
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{
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return 0;
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}
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void btrfs_sysfs_del_root(struct btrfs_root *root)
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{
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return;
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}
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void btrfs_sysfs_del_super(struct btrfs_fs_info *fs)
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{
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return;
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}
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int btrfs_init_sysfs()
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{
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return 0;
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}
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void btrfs_exit_sysfs()
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{
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return;
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}
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#endif
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