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btrfs: clone: use vmalloc only as fallback for nodesize bufer

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Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
David Sterba 2016-04-11 18:40:08 +02:00
parent 2f91306a37
commit 153519559a
1 changed files with 8 additions and 5 deletions
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13
fs/btrfs/ioctl.c
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@ -3468,13 +3468,16 @@ static int btrfs_clone(struct inode *src, struct inode *inode,
u64 last_dest_end = destoff;
ret = -ENOMEM;
buf = vmalloc(root->nodesize);
if (!buf)
return ret;
buf = kmalloc(root->nodesize, GFP_KERNEL | __GFP_NOWARN);
if (!buf) {
buf = vmalloc(root->nodesize);
if (!buf)
return ret;
}
path = btrfs_alloc_path();
if (!path) {
vfree(buf);
kvfree(buf);
return ret;
}
@ -3775,7 +3778,7 @@ process_slot:
out:
btrfs_free_path(path);
vfree(buf);
kvfree(buf);
return ret;
}