Btrfs: only inherit btrfs specific flags when creating files

[pandora-kernel.git] / fs / btrfs / ioctl.c

diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c
index d11fd28..d2b53eb 100644 (file)
--- a/fs/btrfs/ioctl.c
+++ b/fs/btrfs/ioctl.c
@@ -117,7 +117,7 @@ void btrfs_update_iflags(struct inode *inode)
 /*
  * Inherit flags from the parent inode.
  *
- * Unlike extN we don't have any flags we don't want to inherit currently.
+ * Currently only the compression flags and the cow flags are inherited.
  */
 void btrfs_inherit_iflags(struct inode *inode, struct inode *dir)
 {
@@ -128,12 +128,17 @@ void btrfs_inherit_iflags(struct inode *inode, struct inode *dir)
 
        flags = BTRFS_I(dir)->flags;
 
-       if (S_ISREG(inode->i_mode))
-               flags &= ~BTRFS_INODE_DIRSYNC;
-       else if (!S_ISDIR(inode->i_mode))
-               flags &= (BTRFS_INODE_NODUMP | BTRFS_INODE_NOATIME);
+       if (flags & BTRFS_INODE_NOCOMPRESS) {
+               BTRFS_I(inode)->flags &= ~BTRFS_INODE_COMPRESS;
+               BTRFS_I(inode)->flags |= BTRFS_INODE_NOCOMPRESS;
+       } else if (flags & BTRFS_INODE_COMPRESS) {
+               BTRFS_I(inode)->flags &= ~BTRFS_INODE_NOCOMPRESS;
+               BTRFS_I(inode)->flags |= BTRFS_INODE_COMPRESS;
+       }
+
+       if (flags & BTRFS_INODE_NODATACOW)
+               BTRFS_I(inode)->flags |= BTRFS_INODE_NODATACOW;
 
-       BTRFS_I(inode)->flags = flags;
        btrfs_update_iflags(inode);
 }
 
@@ -843,6 +848,7 @@ static int cluster_pages_for_defrag(struct inode *inode,
        int i_done;
        struct btrfs_ordered_extent *ordered;
        struct extent_state *cached_state = NULL;
+       gfp_t mask = btrfs_alloc_write_mask(inode->i_mapping);
 
        if (isize == 0)
                return 0;
@@ -860,7 +866,7 @@ again:
        for (i = 0; i < num_pages; i++) {
                struct page *page;
                page = find_or_create_page(inode->i_mapping,
-                                           start_index + i, GFP_NOFS);
+                                           start_index + i, mask);
                if (!page)
                        break;
 
@@ -2328,7 +2334,12 @@ static noinline long btrfs_ioctl_clone(struct file *file, unsigned long srcfd,
                        else
                                new_key.offset = destoff;
 
-                       trans = btrfs_start_transaction(root, 1);
+                       /*
+                        * 1 - adjusting old extent (we may have to split it)
+                        * 1 - add new extent
+                        * 1 - inode update
+                        */
+                       trans = btrfs_start_transaction(root, 3);
                        if (IS_ERR(trans)) {
                                ret = PTR_ERR(trans);
                                goto out;