Merge branches 'for-linus' and 'for-linus-3.2' of git://git.kernel.org/pub/scm/linux...

[~andy/linux] / fs / btrfs / super.c

diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c
index e28ad4baf483af6b4c7e5d8450dc4a73909d0247..200f63bc6675eca20cf1b55c9ced534efccaf63b 100644 (file)
--- a/fs/btrfs/super.c
+++ b/fs/btrfs/super.c
@@ -41,6 +41,7 @@
 #include <linux/slab.h>
 #include <linux/cleancache.h>
 #include <linux/mnt_namespace.h>
+#include <linux/ratelimit.h>
 #include "compat.h"
 #include "delayed-inode.h"
 #include "ctree.h"
@@ -1053,7 +1054,7 @@ static int btrfs_calc_avail_data_space(struct btrfs_root *root, u64 *free_bytes)
        u64 avail_space;
        u64 used_space;
        u64 min_stripe_size;
-       int min_stripes = 1;
+       int min_stripes = 1, num_stripes = 1;
        int i = 0, nr_devices;
        int ret;
 
@@ -1067,12 +1068,16 @@ static int btrfs_calc_avail_data_space(struct btrfs_root *root, u64 *free_bytes)
 
        /* calc min stripe number for data space alloction */
        type = btrfs_get_alloc_profile(root, 1);
-       if (type & BTRFS_BLOCK_GROUP_RAID0)
+       if (type & BTRFS_BLOCK_GROUP_RAID0) {
                min_stripes = 2;
-       else if (type & BTRFS_BLOCK_GROUP_RAID1)
+               num_stripes = nr_devices;
+       } else if (type & BTRFS_BLOCK_GROUP_RAID1) {
                min_stripes = 2;
-       else if (type & BTRFS_BLOCK_GROUP_RAID10)
+               num_stripes = 2;
+       } else if (type & BTRFS_BLOCK_GROUP_RAID10) {
                min_stripes = 4;
+               num_stripes = 4;
+       }
 
        if (type & BTRFS_BLOCK_GROUP_DUP)
                min_stripe_size = 2 * BTRFS_STRIPE_LEN;
@@ -1141,13 +1146,16 @@ static int btrfs_calc_avail_data_space(struct btrfs_root *root, u64 *free_bytes)
        i = nr_devices - 1;
        avail_space = 0;
        while (nr_devices >= min_stripes) {
+               if (num_stripes > nr_devices)
+                       num_stripes = nr_devices;
+
                if (devices_info[i].max_avail >= min_stripe_size) {
                        int j;
                        u64 alloc_size;
 
-                       avail_space += devices_info[i].max_avail * min_stripes;
+                       avail_space += devices_info[i].max_avail * num_stripes;
                        alloc_size = devices_info[i].max_avail;
-                       for (j = i + 1 - min_stripes; j <= i; j++)
+                       for (j = i + 1 - num_stripes; j <= i; j++)
                                devices_info[j].max_avail -= alloc_size;
                }
                i--;
@@ -1264,6 +1272,16 @@ static int btrfs_unfreeze(struct super_block *sb)
        return 0;
 }
 
+static void btrfs_fs_dirty_inode(struct inode *inode, int flags)
+{
+       int ret;
+
+       ret = btrfs_dirty_inode(inode);
+       if (ret)
+               printk_ratelimited(KERN_ERR "btrfs: fail to dirty inode %Lu "
+                                  "error %d\n", btrfs_ino(inode), ret);
+}
+
 static const struct super_operations btrfs_super_ops = {
        .drop_inode     = btrfs_drop_inode,
        .evict_inode    = btrfs_evict_inode,
@@ -1271,7 +1289,7 @@ static const struct super_operations btrfs_super_ops = {
        .sync_fs        = btrfs_sync_fs,
        .show_options   = btrfs_show_options,
        .write_inode    = btrfs_write_inode,
-       .dirty_inode    = btrfs_dirty_inode,
+       .dirty_inode    = btrfs_fs_dirty_inode,
        .alloc_inode    = btrfs_alloc_inode,
        .destroy_inode  = btrfs_destroy_inode,
        .statfs         = btrfs_statfs,