[PATCH] ecryptfs: set s_blocksize from lower fs in sb

[Eric Sandeen <sandeen@redhat.com>]

eCryptfs wasn't setting s_blocksize in it's superblock; just pick
it up from the lower FS.  Having an s_blocksize of 0 made things
like "filefrag" which call FIGETBSZ unhappy.

Signed-off-by: Eric Sandeen <sandeen@redhat.com>

---

Index: linux-2.6.24-rc3/fs/ecryptfs/main.c
===================================================================
--- linux-2.6.24-rc3.orig/fs/ecryptfs/main.c
+++ linux-2.6.24-rc3/fs/ecryptfs/main.c
@@ -523,6 +523,7 @@ static int ecryptfs_read_super(struct su
 	lower_mnt = nd.mnt;
 	ecryptfs_set_superblock_lower(sb, lower_root->d_sb);
 	sb->s_maxbytes = lower_root->d_sb->s_maxbytes;
+	sb->s_blocksize = lower_root->d_sb->s_blocksize;
 	ecryptfs_set_dentry_lower(sb->s_root, lower_root);
 	ecryptfs_set_dentry_lower_mnt(sb->s_root, lower_mnt);
 	rc = ecryptfs_interpose(lower_root, sb->s_root, sb, 0);

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