1 files changed, 32 insertions, 7 deletions

diff --git a/mm/shmem.c b/mm/shmem.c
index 343b3c0937e5..ce501bce1c2e 100644
--- a/mm/shmem.c
+++ b/mm/shmem.c
@@ -1316,7 +1316,8 @@ shmem_get_inode(struct super_block *sb, int mode, dev_t dev)
                 case S_IFREG:
                         inode->i_op = &shmem_inode_operations;
                         inode->i_fop = &shmem_file_operations;
-                        mpol_shared_policy_init(&info->policy);
+                        mpol_shared_policy_init(&info->policy, sbinfo->policy,
+                                                        &sbinfo->policy_nodes);
                         break;
                 case S_IFDIR:
                         inode->i_nlink++;
@@ -1330,7 +1331,8 @@ shmem_get_inode(struct super_block *sb, int mode, dev_t dev)
                          * Must not load anything in the rbtree,
                          * mpol_free_shared_policy will not be called.
                          */
-                        mpol_shared_policy_init(&info->policy);
+                        mpol_shared_policy_init(&info->policy, MPOL_DEFAULT,
+                                                NULL);
                         break;
                 }
         } else if (sbinfo->max_inodes) {
@@ -1843,7 +1845,9 @@ static struct inode_operations shmem_symlink_inode_operations = {
         .put_link       = shmem_put_link,
 };
 
-static int shmem_parse_options(char *options, int *mode, uid_t *uid, gid_t *gid, unsigned long *blocks, unsigned long *inodes)
+static int shmem_parse_options(char *options, int *mode, uid_t *uid,
+        gid_t *gid, unsigned long *blocks, unsigned long *inodes,
+        int *policy, nodemask_t *policy_nodes)
 {
         char *this_char, *value, *rest;
 
@@ -1897,6 +1901,19 @@ static int shmem_parse_options(char *options, int *mode, uid_t *uid, gid_t *gid,
                         *gid = simple_strtoul(value,&rest,0);
                         if (*rest)
                                 goto bad_val;
+                } else if (!strcmp(this_char,"mpol")) {
+                        if (!strcmp(value,"default"))
+                                *policy = MPOL_DEFAULT;
+                        else if (!strcmp(value,"preferred"))
+                                *policy = MPOL_PREFERRED;
+                        else if (!strcmp(value,"bind"))
+                                *policy = MPOL_BIND;
+                        else if (!strcmp(value,"interleave"))
+                                *policy = MPOL_INTERLEAVE;
+                        else
+                                goto bad_val;
+                } else if (!strcmp(this_char,"mpol_nodelist")) {
+                        nodelist_parse(value, *policy_nodes);
                 } else {
                         printk(KERN_ERR "tmpfs: Bad mount option %s\n",
                                this_char);
@@ -1917,12 +1934,14 @@ static int shmem_remount_fs(struct super_block *sb, int *flags, char *data)
         struct shmem_sb_info *sbinfo = SHMEM_SB(sb);
         unsigned long max_blocks = sbinfo->max_blocks;
         unsigned long max_inodes = sbinfo->max_inodes;
+        int policy = sbinfo->policy;
+        nodemask_t policy_nodes = sbinfo->policy_nodes;
         unsigned long blocks;
         unsigned long inodes;
         int error = -EINVAL;
 
-        if (shmem_parse_options(data, NULL, NULL, NULL,
-                                &max_blocks, &max_inodes))
+        if (shmem_parse_options(data, NULL, NULL, NULL, &max_blocks,
+                                &max_inodes, &policy, &policy_nodes))
                 return error;
 
         spin_lock(&sbinfo->stat_lock);
@@ -1948,6 +1967,8 @@ static int shmem_remount_fs(struct super_block *sb, int *flags, char *data)
         sbinfo->free_blocks = max_blocks - blocks;
         sbinfo->max_inodes  = max_inodes;
         sbinfo->free_inodes = max_inodes - inodes;
+        sbinfo->policy = policy;
+        sbinfo->policy_nodes = policy_nodes;
 out:
         spin_unlock(&sbinfo->stat_lock);
         return error;
@@ -1972,6 +1993,8 @@ static int shmem_fill_super(struct super_block *sb,
         struct shmem_sb_info *sbinfo;
         unsigned long blocks = 0;
         unsigned long inodes = 0;
+        int policy = MPOL_DEFAULT;
+        nodemask_t policy_nodes = node_online_map;
 
 #ifdef CONFIG_TMPFS
         /*
@@ -1984,8 +2007,8 @@ static int shmem_fill_super(struct super_block *sb,
                 inodes = totalram_pages - totalhigh_pages;
                 if (inodes > blocks)
                         inodes = blocks;
-                if (shmem_parse_options(data, &mode, &uid, &gid,
-                                        &blocks, &inodes))
+                if (shmem_parse_options(data, &mode, &uid, &gid, &blocks,
+                                        &inodes, &policy, &policy_nodes))
                         return -EINVAL;
         }
 #else
@@ -2003,6 +2026,8 @@ static int shmem_fill_super(struct super_block *sb,
         sbinfo->free_blocks = blocks;
         sbinfo->max_inodes = inodes;
         sbinfo->free_inodes = inodes;
+        sbinfo->policy = policy;
+        sbinfo->policy_nodes = policy_nodes;
 
         sb->s_fs_info = sbinfo;
         sb->s_maxbytes = SHMEM_MAX_BYTES;